{"id":53609,"date":"2026-05-20T05:04:32","date_gmt":"2026-05-20T05:04:32","guid":{"rendered":"https:\/\/zobai.com\/?p=53609"},"modified":"2026-06-12T04:48:27","modified_gmt":"2026-06-12T04:48:27","slug":"prv-vs-psv-vs-safety-valve-vs-relief-valve","status":"publish","type":"post","link":"https:\/\/zobai.com\/fr\/blog\/prv-vs-psv-vs-safety-valve-vs-relief-valve\/","title":{"rendered":"Comparaison technique : PRV vs PSV vs Soupape de s\u00fbret\u00e9 vs Soupape de d\u00e9charge"},"content":{"rendered":"\n<!--\nSEO TITLE: PRV vs PSV vs Safety Valve vs Relief Valve\nH1 \/ POST TITLE: PRV vs PSV vs Safety Valve vs Relief Valve: What Is the Difference?\nMETA DESCRIPTION: Compare PRV, PSV, safety valves, relief valves and safety relief valves by meaning, fluid service, opening behavior, design, capacity and RFQ requirements.\nCANONICAL: https:\/\/zobai.com\/blog\/prv-vs-psv-vs-safety-valve-vs-relief-valve\/\nPRIMARY KEYWORD: PRV vs PSV\nSECONDARY KEYWORDS: PRV vs PSV vs safety valve; safety valve vs relief valve; pressure relief valve vs pressure safety valve; PRV meaning; PSV meaning; safety relief valve\nCATEGORY: Safety Valve Engineering\nTAGS: PRV, PSV, Safety Valve, Relief Valve, Pressure Relief Device\n\nPAGE OWNERSHIP:\n- This page owns terminology and abbreviation intent for PRV, PSV, safety valve, relief valve and safety relief valve.\n- \/blog\/what-is-a-pressure-relief-valve\/ owns the basic definition of a pressure relief valve.\n- \/blog\/safety-valve-selection-guide\/ owns broad safety-valve selection intent.\n- \/blog\/safety-valve-sizing-and-certified-relieving-capacity-guide\/ owns sizing and certified-capacity intent.\n- \/blog\/spring-loaded-safety-valve-vs-pilot-operated-safety-valve\/ owns spring-loaded vs pilot-operated design comparison.\n- \/standards\/ owns the standards hub.\n- Product pages own transactional valve-type and quotation intent.\n\nIMPORTANT:\n1. If the WordPress theme already renders the post title as H1, do not add a second H1 inside the body.\n2. If Rank Math, Yoast or the theme already outputs Article, Breadcrumb or FAQ schema, remove duplicate schema objects from this HTML.\n3. Add a verified named author, technical reviewer and last technical review date before making individual-expertise claims.\n4. Terminology varies by standard, industry, owner specification and region. 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padding:5px 10px;\n  border-radius:999px;\n  background:var(--warn);\n  color:#8a5600;\n  font-size:13px;\n  font-weight:800;\n  text-transform:uppercase;\n}\n\n.zobai-terms-guide .cta{\n  margin:46px 0;\n  padding:32px;\n  text-align:center;\n  color:#fff;\n  background:linear-gradient(135deg,var(--gd),var(--g));\n  border-radius:14px;\n}\n\n.zobai-terms-guide .cta h2,\n.zobai-terms-guide .cta h3{\n  margin:0 0 14px;\n  color:#fff;\n}\n\n.zobai-terms-guide .cta p{\n  max-width:820px;\n  margin:0 auto 22px;\n}\n\n.zobai-terms-guide .cta a{\n  display:inline-block;\n  margin:6px;\n  padding:12px 20px;\n  border-radius:7px;\n  background:#fff;\n  color:var(--gd);\n  text-decoration:none;\n  font-weight:800;\n}\n\n.zobai-terms-guide .related,\n.zobai-terms-guide .author{\n  margin:42px 0;\n  padding:26px;\n  border:1px solid var(--line);\n  border-radius:12px;\n  background:var(--soft2);\n}\n\n.zobai-terms-guide .related h2,\n.zobai-terms-guide .author h2{margin-top:0}\n\n.zobai-terms-guide .faq{\n  padding:20px 0;\n  border-bottom:1px solid var(--line);\n}\n\n.zobai-terms-guide .faq h3{margin:0 0 10px}\n\n.zobai-terms-guide .faq p:last-child{margin-bottom:0}\n\n@media(max-width:900px){\n  .zobai-terms-guide .grid3{grid-template-columns:1fr}\n}\n\n@media(max-width:760px){\n  .zobai-terms-guide{font-size:16px}\n  .zobai-terms-guide h2{margin-top:48px}\n  .zobai-terms-guide .grid{grid-template-columns:1fr}\n  .zobai-terms-guide .toc ol{columns:1}\n  .zobai-terms-guide .checklist{grid-template-columns:1fr}\n  .zobai-terms-guide .cta{padding:26px 20px}\n}\n<\/style>\n\n<article class=\"zobai-terms-guide\">\n\n<p class=\"lead\">PRV, PSV, safety valve, relief valve and safety relief valve are commonly used in pressure-protection discussions, but the words are not a complete engineering specification. Their meaning changes with the standard, industry, owner terminology and region.<\/p>\n\n<p>In many process plants, <strong>PSV<\/strong> is a tag abbreviation for a pressure safety valve or pressure-relief device. <strong>PRV<\/strong> may mean pressure relief valve, but in utility, HVAC and control contexts it may also mean pressure reducing valve. \u201cSafety valve\u201d and \u201crelief valve\u201d may describe different opening characteristics in a particular code or manufacturer catalogue, yet everyday usage is not always consistent.<\/p>\n\n<div class=\"box summary\">\n<strong>Engineering takeaway:<\/strong> Use the abbreviation to understand the document context, then select the device from the protected equipment, relief scenario, medium, required capacity, set pressure, valve design, back pressure, materials, testing and certification.\n<\/div>\n\n<figure>\n<img decoding=\"async\" loading=\"eager\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/05\/PRV-vs-PSV-vs-Safety-Valve-vs-Relief-Valve-Overview.webp\" alt=\"PRV, PSV, safety valve, relief valve and safety relief valve terminology comparison\" title=\"PRV vs PSV vs Safety Valve vs Relief Valve\">\n<figcaption>Terminology is a starting point; the approved datasheet defines the actual pressure-protection device.<\/figcaption>\n<\/figure>\n\n<section id=\"quick-answer\">\n<h2>Quick Answer: PRV vs PSV vs Safety Valve vs Relief Valve<\/h2>\n\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Term<\/th>\n<th>Common Use<\/th>\n<th>What It Does Not Prove<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>PRV<\/strong><\/td>\n<td>Often pressure relief valve; may also mean pressure reducing valve<\/td>\n<td>Relief function, opening behavior, capacity, code or valve design<\/td>\n<\/tr>\n<tr>\n<td><strong>PSV<\/strong><\/td>\n<td>Common process-plant tag for a pressure safety or pressure-relief device<\/td>\n<td>Spring-loaded, bellows or pilot design; certified capacity; service suitability<\/td>\n<\/tr>\n<tr>\n<td><strong>Safety valve<\/strong><\/td>\n<td>Often associated with rapid-opening protection for compressible fluids<\/td>\n<td>That the capacity, installation and certificate are correct for the project<\/td>\n<\/tr>\n<tr>\n<td><strong>Relief valve<\/strong><\/td>\n<td>Often associated with liquid, thermal-relief or proportional-opening duty<\/td>\n<td>That it is unsuitable for all gas service or automatically accepted for vessel protection<\/td>\n<\/tr>\n<tr>\n<td><strong>Safety relief valve<\/strong><\/td>\n<td>Broad term used for devices suitable for specified gas, liquid or mixed duties<\/td>\n<td>Fluid phase, opening characteristic, sizing method or certification scope<\/td>\n<\/tr>\n<tr>\n<td><strong>Pressure reducing valve<\/strong><\/td>\n<td>Regulates downstream pressure during normal operation<\/td>\n<td>Independent overpressure protection<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<div class=\"box critical\">\n<strong>PRV ambiguity:<\/strong> Never place \u201cPRV\u201d alone on an RFQ, replacement order or maintenance instruction when it could mean either a pressure relief valve or a pressure reducing valve. Write the full device function.\n<\/div>\n<\/section>\n\n<nav class=\"toc\" aria-label=\"Table of contents\">\n<strong>Table of Contents<\/strong>\n<ol>\n<li><a href=\"#why-confused\">Why the terms are confused<\/a><\/li>\n<li><a href=\"#prv\">What PRV means<\/a><\/li>\n<li><a href=\"#psv\">What PSV means<\/a><\/li>\n<li><a href=\"#safety-valve\">What a safety valve means<\/a><\/li>\n<li><a href=\"#relief-valve\">What a relief valve means<\/a><\/li>\n<li><a href=\"#safety-relief\">What a safety relief valve means<\/a><\/li>\n<li><a href=\"#design-layer\">Terminology vs valve design<\/a><\/li>\n<li><a href=\"#comparison\">Detailed comparison<\/a><\/li>\n<li><a href=\"#replacement\">Replacement-valve review<\/a><\/li>\n<li><a href=\"#decision-process\">How to choose the correct description<\/a><\/li>\n<li><a href=\"#illustrative-cases\">Illustrative error cases<\/a><\/li>\n<li><a href=\"#rfq\">RFQ checklist<\/a><\/li>\n<li><a href=\"#mistakes\">Common mistakes<\/a><\/li>\n<li><a href=\"#standards\">Standards and references<\/a><\/li>\n<li><a href=\"#faq\">FAQ<\/a><\/li>\n<\/ol>\n<\/nav>\n\n<section id=\"why-confused\">\n<h2>Why PRV, PSV, Safety Valve and Relief Valve Are Confused<\/h2>\n\n<p>The terminology problem has several causes:<\/p>\n\n<ul>\n<li>different industries use different tag conventions;<\/li>\n<li>owner specifications may define abbreviations differently;<\/li>\n<li>regional and supplier language varies;<\/li>\n<li>legacy P&amp;IDs may contain only a short tag description;<\/li>\n<li>PRV has two widely used meanings;<\/li>\n<li>commercial catalogues sometimes use broad terms for multiple valve designs;<\/li>\n<li>the operating characteristic and certification route may not be visible from the tag name.<\/li>\n<\/ul>\n\n<p>The safest hierarchy is:<\/p>\n\n<div class=\"flow\">Protected equipment \u2192 relief scenario \u2192 required capacity \u2192 valve function \u2192 valve design \u2192 standards and documents \u2192 final tag description<\/div>\n\n<p>The abbreviation should be the last communication layer, not the first engineering decision.<\/p>\n<\/section>\n\n<section id=\"prv\">\n<h2>What Does PRV Mean?<\/h2>\n\n<h3>PRV as Pressure Relief Valve<\/h3>\n\n<p>In pressure-protection documents, PRV commonly means <strong>pressure relief valve<\/strong>. It may be used as a broad category for spring-loaded, balanced bellows, pilot-operated, thermal-relief or other pressure-relieving devices.<\/p>\n\n<p>This broad use is convenient for discussion but too vague for final procurement. A \u201cPRV\u201d could protect:<\/p>\n\n<ul>\n<li>a gas vessel from blocked outlet;<\/li>\n<li>a liquid line from thermal expansion;<\/li>\n<li>a compressor receiver;<\/li>\n<li>a pump discharge line;<\/li>\n<li>a reactor connected to a flare header;<\/li>\n<li>a boiler or steam system under a specific code.<\/li>\n<\/ul>\n\n<p>Those duties do not use the same sizing method, opening behavior, valve construction or discharge arrangement.<\/p>\n\n<h3>PRV as Pressure Reducing Valve<\/h3>\n\n<p>In water, steam distribution, HVAC, utilities and control applications, PRV may mean <strong>pressure reducing valve<\/strong>. This device controls downstream pressure during normal operation. It is fundamentally different from a pressure relief valve, which responds to an abnormal overpressure condition.<\/p>\n\n<div class=\"grid\">\n<div class=\"card\">\n<h3>Pressure Relief Valve<\/h3>\n<p>Opens to discharge fluid when protected-system pressure reaches the specified condition.<\/p>\n<\/div>\n<div class=\"card\">\n<h3>Pressure Reducing Valve<\/h3>\n<p>Modulates during normal operation to maintain a lower downstream pressure.<\/p>\n<\/div>\n<\/div>\n\n<div class=\"box warning\">\n<strong>Protection-layer warning:<\/strong> A pressure reducing valve can fail open or fail to control. The system may still require an independent pressure-relief device sized for the credible regulator-failure case.\n<\/div>\n\n<p>For the basic device definition, see <a href=\"\/blog\/what-is-a-pressure-relief-valve\/\">What Is a Pressure Relief Valve?<\/a>.<\/p>\n<\/section>\n\n<section id=\"psv\">\n<h2>What Does PSV Mean?<\/h2>\n\n<p><strong>PSV<\/strong> usually means <strong>pressure safety valve<\/strong> in oil, gas, refinery, petrochemical and other process-plant documentation. It is commonly used as the tag prefix for an automatic device that protects equipment from overpressure.<\/p>\n\n<p>PSV is often a plant-language or project-language term. It does not by itself identify:<\/p>\n\n<ul>\n<li>conventional spring-loaded, balanced bellows or pilot-operated construction;<\/li>\n<li>gas, steam, liquid or two-phase service;<\/li>\n<li>orifice area or certified capacity;<\/li>\n<li>back-pressure limit;<\/li>\n<li>seat-tightness requirement;<\/li>\n<li>code marking or certificate scope;<\/li>\n<li>discharge to atmosphere, a closed header or a flare system.<\/li>\n<\/ul>\n\n<p>A complete PSV schedule should connect every tag to a relief calculation, approved datasheet, valve model, capacity basis and inspection records.<\/p>\n<\/section>\n\n<section id=\"safety-valve\">\n<h2>What Is a Safety Valve?<\/h2>\n\n<p>In many engineering and manufacturer contexts, a <strong>safety valve<\/strong> is associated with a rapid-opening or pop-type response, especially for steam, air, gas and other compressible fluids. The exact definition and test characteristic must come from the applicable standard and valve design.<\/p>\n\n<p>Typical applications include:<\/p>\n\n<ul>\n<li>steam boilers and steam equipment;<\/li>\n<li>compressed-air receivers;<\/li>\n<li>gas pressure vessels;<\/li>\n<li>clean steam and utility steam systems;<\/li>\n<li>process equipment requiring rapid pressure relief.<\/li>\n<\/ul>\n\n<p>The term \u201csafety valve\u201d does not prove that the valve has enough relieving capacity. Set pressure, required capacity, certified capacity, fluid state, relieving conditions and installed piping still require verification.<\/p>\n\n<p>For pressure terms, use <a href=\"\/blog\/safety-valve-set-pressure-overpressure-blowdown\/\">Safety Valve Set Pressure, Overpressure, Accumulation and Blowdown<\/a>.<\/p>\n<\/section>\n\n<section id=\"relief-valve\">\n<h2>What Is a Relief Valve?<\/h2>\n\n<p>A <strong>relief valve<\/strong> is often associated with liquid service, thermal expansion or an opening response that increases with pressure. This is a useful general distinction, but project and regional usage varies.<\/p>\n\n<p>Typical liquid-related duties include:<\/p>\n\n<ul>\n<li>thermal expansion of blocked-in liquid;<\/li>\n<li>hydraulic systems;<\/li>\n<li>pump discharge protection;<\/li>\n<li>liquid vessels and process lines;<\/li>\n<li>selected bypass or recirculation duties.<\/li>\n<\/ul>\n\n<p>Liquid service requires specific attention to density, viscosity, flashing, inlet loss, reaction force, outlet routing and stable operation. A small threaded thermal-relief valve and a high-capacity liquid pressure-relief valve should not be treated as equivalent devices.<\/p>\n\n<div class=\"box info\">\n<strong>Terminology boundary:<\/strong> \u201cRelief valve\u201d does not universally mean liquid-only, and \u201csafety valve\u201d does not universally mean gas-only. Use the applicable standard and manufacturer data for the actual definition.\n<\/div>\n<\/section>\n\n<section id=\"safety-relief\">\n<h2>What Is a Safety Relief Valve?<\/h2>\n\n<p><strong>Safety relief valve<\/strong> is a broad combined term used for valves that may serve compressible or incompressible fluid duties when the specific design, certification and sizing basis support the application.<\/p>\n\n<p>The term is useful when a product family covers multiple fluid services, but it should never replace the following information:<\/p>\n\n<ul>\n<li>medium and phase at the relieving condition;<\/li>\n<li>required relieving capacity;<\/li>\n<li>set and relieving pressure;<\/li>\n<li>opening characteristic;<\/li>\n<li>orifice and certified capacity;<\/li>\n<li>back pressure and discharge destination;<\/li>\n<li>materials and seat design;<\/li>\n<li>applicable code and documentation.<\/li>\n<\/ul>\n\n<div class=\"box critical\">\n<strong>Two-phase warning:<\/strong> A valve called a safety relief valve is not automatically suitable for flashing or two-phase flow. Two-phase sizing and discharge-system behavior require qualified engineering and manufacturer review.\n<\/div>\n<\/section>\n\n<section id=\"design-layer\">\n<h2>Terminology and Valve Design Are Different Selection Layers<\/h2>\n\n<p>PRV, PSV, safety valve and relief valve describe terminology or functional categories. <strong>Spring-loaded<\/strong>, <strong>balanced bellows<\/strong> and <strong>pilot-operated<\/strong> describe how the valve is constructed and controlled.<\/p>\n\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Design<\/th>\n<th>Operating Principle<\/th>\n<th>Typical Selection Question<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Conventional spring-loaded<\/td>\n<td>Spring force acts directly against inlet-pressure force<\/td>\n<td>Is the operating margin and back pressure acceptable?<\/td>\n<\/tr>\n<tr>\n<td>Balanced bellows<\/td>\n<td>Bellows reduces outlet-pressure influence on force balance<\/td>\n<td>Are back pressure, bellows material, venting and failure mode acceptable?<\/td>\n<\/tr>\n<tr>\n<td>Pilot-operated<\/td>\n<td>Pilot and system pressure control the main valve<\/td>\n<td>Is the medium clean, and are sensing and exhaust conditions suitable?<\/td>\n<\/tr>\n<tr>\n<td>Thermal-relief design<\/td>\n<td>Small valve relieves expansion of trapped liquid<\/td>\n<td>What is the blocked-liquid case and safe discharge destination?<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<p>A device tagged \u201cPSV\u201d may use any of the first three designs. Compare them in <a href=\"\/blog\/spring-loaded-safety-valve-vs-pilot-operated-safety-valve\/\">Spring-Loaded vs Pilot-Operated Safety Valves<\/a>.<\/p>\n<\/section>\n\n<section id=\"comparison\">\n<h2>PRV vs PSV vs Safety Valve vs Relief Valve Comparison<\/h2>\n\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Term<\/th>\n<th>Common Meaning<\/th>\n<th>Common Service Association<\/th>\n<th>Opening Association<\/th>\n<th>Primary Procurement Risk<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PRV<\/td>\n<td>Pressure relief valve; sometimes pressure reducing valve<\/td>\n<td>Broad, depends on context<\/td>\n<td>Depends on actual device<\/td>\n<td>The abbreviation may identify the wrong function.<\/td>\n<\/tr>\n<tr>\n<td>PSV<\/td>\n<td>Pressure safety valve \/ plant pressure-relief device tag<\/td>\n<td>Process vessels, gas, vapor, steam and other plant duties<\/td>\n<td>Depends on selected valve design<\/td>\n<td>Tag name is mistaken for a complete specification.<\/td>\n<\/tr>\n<tr>\n<td>Safety valve<\/td>\n<td>Automatic overpressure-protection valve<\/td>\n<td>Often steam, air or compressible fluid<\/td>\n<td>Often rapid or pop action<\/td>\n<td>Capacity and application code are assumed rather than verified.<\/td>\n<\/tr>\n<tr>\n<td>Relief valve<\/td>\n<td>Automatic pressure-relieving valve<\/td>\n<td>Often liquid or thermal expansion<\/td>\n<td>Often proportional\/modulating, depending on design<\/td>\n<td>Liquid assumptions are incorrectly applied to gas or steam.<\/td>\n<\/tr>\n<tr>\n<td>Safety relief valve<\/td>\n<td>Combined pressure-relief term<\/td>\n<td>Gas, liquid or specified mixed service<\/td>\n<td>Design- and service-dependent<\/td>\n<td>The broad name hides fluid-phase and certification limits.<\/td>\n<\/tr>\n<tr>\n<td>Pressure reducing valve<\/td>\n<td>Normal-operation pressure regulator<\/td>\n<td>Steam, gas, water and utilities<\/td>\n<td>Modulates to control downstream pressure<\/td>\n<td>It is mistaken for the independent overpressure-protection device.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<figure>\n<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/05\/Valve-Terminology-Selection-Decision-Tree.webp\" alt=\"PRV and PSV terminology decision tree based on device function, medium, capacity and standard\" title=\"PRV and PSV Terminology Decision Tree\">\n<figcaption>Start from the device function and service data, then choose the clearest project description.<\/figcaption>\n<\/figure>\n<\/section>\n\n<section id=\"replacement\">\n<h2>How to Review a PRV or PSV Replacement<\/h2>\n\n<p>A replacement should not be approved only because the new valve has the same tag, inlet size, outlet size and set pressure.<\/p>\n\n<h3>Minimum Replacement Checks<\/h3>\n\n<div class=\"checklist\">\n<div class=\"check\">Protected equipment and governing relief scenario<\/div>\n<div class=\"check\">MAWP or approved equipment pressure basis<\/div>\n<div class=\"check\">Required relieving capacity and calculation revision<\/div>\n<div class=\"check\">Fluid phase and relieving temperature<\/div>\n<div class=\"check\">Set pressure and operating margin<\/div>\n<div class=\"check\">Orifice designation or effective flow area<\/div>\n<div class=\"check\">Manufacturer-certified capacity<\/div>\n<div class=\"check\">Conventional, bellows or pilot design<\/div>\n<div class=\"check\">Superimposed and built-up back pressure<\/div>\n<div class=\"check\">Body, trim, spring, bellows, seat and seals<\/div>\n<div class=\"check\">Inlet\/outlet connections and installation envelope<\/div>\n<div class=\"check\">Code marking, certificates and test reports<\/div>\n<\/div>\n\n<figure>\n<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/05\/Same-Connection-Size-Different-Relief-Capacity.webp\" alt=\"Two pressure relief valves with the same connection size but different internal orifice and relieving capacity\" title=\"Same Connection Size, Different Relief Capacity\">\n<figcaption>Mechanical interchangeability does not prove hydraulic or code equivalence.<\/figcaption>\n<\/figure>\n\n<p>Use the <a href=\"\/blog\/safety-valve-sizing-and-certified-relieving-capacity-guide\/\">Safety Valve Sizing and Certified Capacity Guide<\/a> for capacity review and the <a href=\"\/blog\/safety-valve-procurement-checklist\/\">Safety Valve Procurement Checklist<\/a> for bid and document review.<\/p>\n<\/section>\n\n<section id=\"decision-process\">\n<h2>How to Choose the Correct Term for a Project<\/h2>\n\n<ol class=\"steps\">\n<li><strong>Write the full device function.<\/strong><br>State pressure relief valve, pressure reducing valve, safety valve, thermal relief valve or another precise description.<\/li>\n<li><strong>Identify the protected equipment.<\/strong><br>Vessel, boiler, piping, compressor, pump, heat exchanger, reactor or skid.<\/li>\n<li><strong>State the relief scenario.<\/strong><br>Blocked outlet, fire, regulator failure, thermal expansion or another approved case.<\/li>\n<li><strong>State the medium and phase.<\/strong><br>Steam, gas, vapor, liquid, flashing or two-phase.<\/li>\n<li><strong>State the required capacity.<\/strong><br>Include units, relieving pressure, temperature and calculation revision.<\/li>\n<li><strong>Define the valve construction.<\/strong><br>Conventional, balanced bellows, pilot-operated, thermal-relief or project-approved alternative.<\/li>\n<li><strong>Define the discharge system.<\/strong><br>Atmosphere, safe drain, recovery line, common header or flare.<\/li>\n<li><strong>Define standards and documents.<\/strong><br>Code basis, capacity evidence, calibration, leakage, materials and installation records.<\/li>\n<\/ol>\n\n<div class=\"box summary\">\n<strong>Recommended tag description:<\/strong> Keep the plant tag such as PSV-101, but write a complete equipment description and datasheet behind it. The tag supports identification; the datasheet supports engineering.\n<\/div>\n<\/section>\n\n<section id=\"illustrative-cases\">\n<h2>Illustrative Terminology and Procurement Errors<\/h2>\n\n<div class=\"case\">\n<span class=\"label\">Fictional training example \u2014 not project data<\/span>\n<h3>Case 1: PRV Meant Two Different Devices<\/h3>\n<p>A utility equipment list used \u201cPRV\u201d without a full description. Purchasing requested a pressure reducing valve, while the vessel engineer intended a pressure relief valve.<\/p>\n<p><strong>Prevention:<\/strong> write the full function in the equipment list and include set pressure, required capacity and protected equipment.<\/p>\n<\/div>\n\n<div class=\"case\">\n<span class=\"label\">Fictional training example \u2014 not project data<\/span>\n<h3>Case 2: Same PSV Tag, Smaller Capacity<\/h3>\n<p>A replacement matched the old flange sizes and set pressure but had a smaller internal flow area. The tag and connection fit; the certified capacity did not.<\/p>\n<p><strong>Prevention:<\/strong> approve replacements against the relief calculation, orifice, certified capacity and back-pressure basis.<\/p>\n<\/div>\n\n<div class=\"case\">\n<span class=\"label\">Fictional training example \u2014 not project data<\/span>\n<h3>Case 3: \u201cRelief Valve\u201d Used for an Unreviewed Gas Duty<\/h3>\n<p>A liquid-style proportional valve was proposed for a gas vessel because both documents used the broad term relief valve.<\/p>\n<p><strong>Prevention:<\/strong> specify compressible-fluid service, required opening behavior, capacity and applicable product standard.<\/p>\n<\/div>\n<\/section>\n\n<section id=\"rfq\">\n<h2>RFQ Checklist When You Are Not Sure Which Term to Use<\/h2>\n\n<figure>\n<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/05\/RFQ-Data-Checklist-for-PRV-PSV-Safety-Valve.webp\" alt=\"RFQ checklist for PRV, PSV, safety valve and relief valve selection\" title=\"PRV and PSV RFQ Checklist\">\n<figcaption>Send the engineering data instead of guessing the abbreviation.<\/figcaption>\n<\/figure>\n\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>RFQ Data<\/th>\n<th>Why It Matters<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr><td>Protected equipment and tag<\/td><td>Defines the protected pressure boundary and project identity.<\/td><\/tr>\n<tr><td>Full device function<\/td><td>Eliminates PRV pressure-relief versus pressure-reducing ambiguity.<\/td><\/tr>\n<tr><td>MAWP \/ design pressure<\/td><td>Supports set-pressure and equipment-code review.<\/td><\/tr>\n<tr><td>Operating and set pressure<\/td><td>Supports operating-margin and calibration review.<\/td><\/tr>\n<tr><td>Relief scenario<\/td><td>Defines why the device must relieve.<\/td><\/tr>\n<tr><td>Medium and phase<\/td><td>Controls sizing, valve behavior and materials.<\/td><\/tr>\n<tr><td>Required relieving capacity<\/td><td>Defines the minimum hydraulic performance.<\/td><\/tr>\n<tr><td>Relieving pressure and temperature<\/td><td>Supports certified-capacity and material verification.<\/td><\/tr>\n<tr><td>Back pressure and discharge destination<\/td><td>Controls valve design, stability and outlet review.<\/td><\/tr>\n<tr><td>Valve construction<\/td><td>Conventional, bellows, pilot or another required design.<\/td><\/tr>\n<tr><td>Materials and seat<\/td><td>Controls corrosion, leakage and temperature suitability.<\/td><\/tr>\n<tr><td>Standards and documents<\/td><td>Defines certification, testing, inspection and project acceptance.<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<div class=\"cta\">\n<h3>Unsure Whether the RFQ Should Say PRV or PSV?<\/h3>\n<p>Send the equipment, medium, relief scenario, set pressure, required capacity, relieving temperature, back pressure and document requirements. The engineering data matter more than the abbreviation.<\/p>\n<a href=\"\/ask-an-engineer\/\">Upload Project Data<\/a>\n<a href=\"\/contacts\/\">Request a Pressure Relief Valve Quote<\/a>\n<\/div>\n<\/section>\n\n<section id=\"mistakes\">\n<h2>Common Engineering and Procurement Mistakes<\/h2>\n\n<div class=\"grid\">\n<div class=\"card\"><h3>Using PRV Without the Full Name<\/h3><p>The buyer cannot tell whether the device relieves or reduces pressure.<\/p><\/div>\n<div class=\"card\"><h3>Treating PSV as a Valve Design<\/h3><p>The tag does not identify conventional, bellows or pilot construction.<\/p><\/div>\n<div class=\"card\"><h3>Replacing by Pipe Size<\/h3><p>The valve may fit but have the wrong orifice and capacity.<\/p><\/div>\n<div class=\"card\"><h3>Assuming Safety Valve Means Gas Capacity Is Verified<\/h3><p>The product name does not replace sizing and certification.<\/p><\/div>\n<div class=\"card\"><h3>Assuming Relief Valve Means Liquid-Only<\/h3><p>Terminology varies; the actual service must be stated.<\/p><\/div>\n<div class=\"card\"><h3>Ignoring Back Pressure<\/h3><p>A flare or common header can change lift, capacity and reseating.<\/p><\/div>\n<div class=\"card\"><h3>Copying a Legacy Tag<\/h3><p>The original relief scenario and certificate may no longer be available.<\/p><\/div>\n<div class=\"card\"><h3>Requesting \u201cAPI\/ASME Valve\u201d Generically<\/h3><p>The exact standard, marking, scope and document route remain unclear.<\/p><\/div>\n<\/div>\n<\/section>\n\n<section id=\"standards\">\n<h2>Standards and Authoritative References<\/h2>\n\n<p>The standards below address different layers of overpressure protection. Use the edition required by the project and read the official document rather than relying only on terminology summaries.<\/p>\n\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Reference<\/th>\n<th>Role<\/th>\n<th>Official \/ Supporting Link<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ASME BPVC Section XIII<\/td>\n<td>Rules for overpressure protection of pressurized equipment, including pressure-relief devices<\/td>\n<td><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/bpvc-xiii-bpvc-section-xiii-rules-overpressure-protection\" target=\"_blank\" rel=\"noopener noreferrer\">ASME official page<\/a><\/td>\n<\/tr>\n<tr>\n<td>API 520 Part I<\/td>\n<td>Sizing and selection of pressure-relieving devices in covered refinery\/process applications<\/td>\n<td><a href=\"https:\/\/www.api.org\/products-and-services\/standards\/important-standards-announcements\/520parti\" target=\"_blank\" rel=\"noopener noreferrer\">API official page<\/a><\/td>\n<\/tr>\n<tr>\n<td>API 520 Part II<\/td>\n<td>Installation and engineering analysis of pressure-relieving-device installations<\/td>\n<td><a href=\"https:\/\/www.api.org\/products-and-services\/standards\/important-standards-announcements\/520part-ii\" target=\"_blank\" rel=\"noopener noreferrer\">API official page<\/a><\/td>\n<\/tr>\n<tr>\n<td>API 521<\/td>\n<td>Pressure-relieving and depressuring systems, including flare and disposal-system context<\/td>\n<td><a href=\"https:\/\/www.api.org\/products-and-services\/standards\/important-standards-announcements\/standard521\" target=\"_blank\" rel=\"noopener noreferrer\">API official page<\/a><\/td>\n<\/tr>\n<tr>\n<td>ISO 4126-1<\/td>\n<td>General product requirements for safety valves; it is not a complete application guide<\/td>\n<td><a href=\"https:\/\/www.iso.org\/standard\/50826.html\" target=\"_blank\" rel=\"noopener noreferrer\">ISO official page<\/a><\/td>\n<\/tr>\n<tr>\n<td>API 527<\/td>\n<td>Seat-tightness testing; it does not define sizing or the relief scenario<\/td>\n<td><a href=\"\/standards\/api-527-seat-tightness-test\/\">ZOBAI API 527 Guide<\/a><\/td>\n<\/tr>\n<tr>\n<td>NBIC \/ National Board<\/td>\n<td>Installation, inspection, repair and authorization framework where applicable<\/td>\n<td><a href=\"https:\/\/www.nationalboard.org\/OrderTheNBIC.aspx\" target=\"_blank\" rel=\"noopener noreferrer\">National Board official page<\/a><\/td>\n<\/tr>\n<tr>\n<td>ZOBAI Standards Hub<\/td>\n<td>Procurement-oriented navigation for ASME, API, ISO, NBIC and related pages<\/td>\n<td><a href=\"\/standards\/\">Safety Valve Standards<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<div class=\"box warning\">\n<strong>Standards boundary:<\/strong> The presence of \u201cPRV,\u201d \u201cPSV,\u201d \u201cAPI,\u201d \u201cASME\u201d or \u201cISO\u201d in a description does not prove certification. Verify the legal manufacturer, model, size, material, standard edition, marking and document scope.\n<\/div>\n<\/section>\n\n<aside class=\"author\">\n<h2>Engineering Review Note<\/h2>\n<p>This article supports terminology clarification, RFQ preparation and replacement screening. Final selection should follow the approved relief calculation, applicable standard, manufacturer-certified data, installed-system review and responsible engineer&#8217;s approval.<\/p>\n<p><strong>Publication requirement:<\/strong> Add a verified author, technical reviewer and last technical review date. Do not publish invented field cases or credentials.<\/p>\n<\/aside>\n\n<section class=\"related\">\n<h2>Related Pressure Relief Engineering Resources<\/h2>\n<ul>\n<li><a href=\"\/blog\/what-is-a-pressure-relief-valve\/\">What Is a Pressure Relief Valve?<\/a><\/li>\n<li><a href=\"\/safety-valves\/pressure-relief-valves\/\">Pressure Relief Valves<\/a><\/li>\n<li><a href=\"\/blog\/safety-valve-selection-guide\/\">Safety Valve Selection Guide<\/a><\/li>\n<li><a href=\"\/blog\/safety-valve-sizing-and-certified-relieving-capacity-guide\/\">Safety Valve Sizing and Certified Capacity<\/a><\/li>\n<li><a href=\"\/blog\/safety-valve-set-pressure-overpressure-blowdown\/\">Set Pressure, Overpressure and Blowdown<\/a><\/li>\n<li><a href=\"\/blog\/how-back-pressure-affects-safety-valve-performance\/\">Safety Valve Back Pressure Guide<\/a><\/li>\n<li><a href=\"\/blog\/spring-loaded-safety-valve-vs-pilot-operated-safety-valve\/\">Spring-Loaded vs Pilot-Operated Safety Valves<\/a><\/li>\n<li><a href=\"\/blog\/safety-valve-procurement-checklist\/\">Safety Valve Procurement Checklist<\/a><\/li>\n<li><a href=\"\/resources\/safety-valve-certificates\/\">Safety Valve Certificates and Test Reports<\/a><\/li>\n<li><a href=\"\/standards\/\">Safety Valve Standards Hub<\/a><\/li>\n<\/ul>\n<\/section>\n\n<section id=\"faq\">\n<h2>FAQ About PRV, PSV, Safety Valves and Relief Valves<\/h2>\n\n<div class=\"faq\">\n<h3>Is PRV the same as PSV?<\/h3>\n<p>Not necessarily. PRV commonly means pressure relief valve, while PSV commonly means pressure safety valve or a process-plant pressure-relief tag. PRV may also mean pressure reducing valve in some systems.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>What does PRV mean?<\/h3>\n<p>It often means pressure relief valve, but the drawing, equipment list or specification must confirm whether it instead means pressure reducing valve.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>What does PSV mean?<\/h3>\n<p>PSV usually means pressure safety valve in process-plant terminology. It does not identify the valve construction, capacity or certification by itself.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>What is the difference between a safety valve and a relief valve?<\/h3>\n<p>A safety valve is often associated with rapid opening for compressible fluids, while a relief valve is often associated with liquid or proportional-opening service. Exact definitions depend on the applicable standard and design.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>What is a safety relief valve?<\/h3>\n<p>It is a broad combined term for a pressure-relieving valve that may be approved for specified gas, liquid or mixed duties. The service and capacity basis must be stated.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>Is a pressure reducing valve a safety valve?<\/h3>\n<p>No. A pressure reducing valve regulates downstream pressure during normal operation. A separate pressure-relief device may be required to protect against regulator failure or another overpressure case.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>Can a PSV be replaced with a PRV?<\/h3>\n<p>Only after the full functions and engineering data are compared. The replacement must satisfy the relief scenario, capacity, set pressure, medium, design, back pressure, materials, installation and documentation.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>Does the connection size determine pressure-relief capacity?<\/h3>\n<p>No. Capacity depends on the effective flow area, lift, set and relieving pressure, fluid, temperature, back pressure and manufacturer-certified data.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>Which standard applies to a PRV or PSV?<\/h3>\n<p>It depends on the protected equipment, industry, jurisdiction and service. ASME BPVC, API 520\/521, ISO 4126, NBIC and owner specifications may address different parts of the system.<\/p>\n<\/div>\n\n<div class=\"faq\">\n<h3>What should I send a supplier when the terminology is unclear?<\/h3>\n<p>Send the protected equipment, relief scenario, MAWP, operating and set pressure, medium and phase, required capacity, relieving temperature, back pressure, valve design, materials, connections and required documents.<\/p>\n<\/div>\n<\/section>\n\n<section class=\"cta\">\n<h2>Use the Full Function, Not Only the Abbreviation<\/h2>\n<p>Send the protected equipment, relief scenario, medium, set pressure, required capacity, relieving temperature, back pressure and certificate requirements. ZOBAI can review the correct valve description and quotation basis.<\/p>\n<a href=\"\/ask-an-engineer\/\">Upload PRV \/ PSV Data<\/a>\n<a href=\"\/contacts\/\">Request a Pressure Relief Valve Quote<\/a>\n<\/section>\n\n<\/article>\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\":\"https:\/\/schema.org\",\n  \"@graph\":[\n    {\n      \"@type\":\"TechArticle\",\n      \"@id\":\"https:\/\/zobai.com\/blog\/prv-vs-psv-vs-safety-valve-vs-relief-valve\/#article\",\n      \"mainEntityOfPage\":{\n        \"@type\":\"WebPage\",\n        \"@id\":\"https:\/\/zobai.com\/blog\/prv-vs-psv-vs-safety-valve-vs-relief-valve\/\"\n      },\n      \"headline\":\"PRV vs PSV vs Safety Valve vs Relief Valve: What Is the Difference?\",\n      \"description\":\"Compare PRV, PSV, safety valves, relief valves and safety relief valves by meaning, fluid service, opening behavior, design, capacity and RFQ requirements.\",\n      \"image\":[\n        \"https:\/\/zobai.com\/wp-content\/uploads\/2026\/05\/PRV-vs-PSV-vs-Safety-Valve-vs-Relief-Valve-Overview.webp\",\n        \"https:\/\/zobai.com\/wp-content\/uploads\/2026\/05\/Valve-Terminology-Selection-Decision-Tree.webp\",\n        \"https:\/\/zobai.com\/wp-content\/uploads\/2026\/05\/Same-Connection-Size-Different-Relief-Capacity.webp\",\n        \"https:\/\/zobai.com\/wp-content\/uploads\/2026\/05\/RFQ-Data-Checklist-for-PRV-PSV-Safety-Valve.webp\"\n      ],\n      \"author\":{\n        \"@type\":\"Organization\",\n        \"name\":\"ZOBAI Valve\",\n        \"url\":\"https:\/\/zobai.com\/\"\n      },\n      \"publisher\":{\n        \"@type\":\"Organization\",\n        \"name\":\"ZOBAI Valve\",\n        \"url\":\"https:\/\/zobai.com\/\"\n      },\n      \"dateModified\":\"2026-06-11\",\n      \"keywords\":[\n        \"PRV vs PSV\",\n        \"PRV vs PSV vs safety valve\",\n        \"safety valve vs relief valve\",\n        \"pressure relief valve vs pressure safety valve\",\n        \"PRV meaning\",\n        \"PSV meaning\",\n        \"safety relief valve\"\n      ],\n      \"about\":[\n        {\"@type\":\"Thing\",\"name\":\"Pressure relief valve terminology\"},\n        {\"@type\":\"Thing\",\"name\":\"Pressure safety valve\"},\n        {\"@type\":\"Thing\",\"name\":\"Safety valve\"},\n        {\"@type\":\"Thing\",\"name\":\"Relief valve\"}\n      ]\n    },\n    {\n      \"@type\":\"BreadcrumbList\",\n      \"@id\":\"https:\/\/zobai.com\/blog\/prv-vs-psv-vs-safety-valve-vs-relief-valve\/#breadcrumb\",\n      \"itemListElement\":[\n        {\n          \"@type\":\"ListItem\",\n          \"position\":1,\n          \"name\":\"Home\",\n          \"item\":\"https:\/\/zobai.com\/\"\n        },\n        {\n          \"@type\":\"ListItem\",\n          \"position\":2,\n          \"name\":\"Safety Valve Engineering\",\n          \"item\":\"https:\/\/zobai.com\/knowledge-center\/\"\n        },\n        {\n          \"@type\":\"ListItem\",\n          \"position\":3,\n          \"name\":\"PRV vs PSV vs Safety Valve vs Relief Valve\",\n          \"item\":\"https:\/\/zobai.com\/blog\/prv-vs-psv-vs-safety-valve-vs-relief-valve\/\"\n        }\n      ]\n    },\n    {\n      \"@type\":\"FAQPage\",\n      \"@id\":\"https:\/\/zobai.com\/blog\/prv-vs-psv-vs-safety-valve-vs-relief-valve\/#faq\",\n      \"mainEntity\":[\n        {\n          \"@type\":\"Question\",\n          \"name\":\"Is PRV the same as PSV?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"Not necessarily. PRV commonly means pressure relief valve, while PSV commonly means pressure safety valve or a process-plant pressure-relief tag. PRV may also mean pressure reducing valve in some systems.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"What does PRV mean?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"It often means pressure relief valve, but the drawing, equipment list or specification must confirm whether it instead means pressure reducing valve.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"What does PSV mean?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"PSV usually means pressure safety valve in process-plant terminology. It does not identify the valve construction, capacity or certification by itself.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"What is the difference between a safety valve and a relief valve?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"A safety valve is often associated with rapid opening for compressible fluids, while a relief valve is often associated with liquid or proportional-opening service. Exact definitions depend on the applicable standard and design.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"What is a safety relief valve?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"It is a broad combined term for a pressure-relieving valve that may be approved for specified gas, liquid or mixed duties. The service and capacity basis must be stated.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"Is a pressure reducing valve a safety valve?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"No. A pressure reducing valve regulates downstream pressure during normal operation. A separate pressure-relief device may be required to protect against regulator failure or another overpressure case.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"Can a PSV be replaced with a PRV?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"Only after the full functions and engineering data are compared. The replacement must satisfy the relief scenario, capacity, set pressure, medium, design, back pressure, materials, installation and documentation.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"Does the connection size determine pressure-relief capacity?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"No. Capacity depends on the effective flow area, lift, set and relieving pressure, fluid, temperature, back pressure and manufacturer-certified data.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"Which standard applies to a PRV or PSV?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"It depends on the protected equipment, industry, jurisdiction and service. ASME BPVC, API 520\/521, ISO 4126, NBIC and owner specifications may address different parts of the system.\"\n          }\n        },\n        {\n          \"@type\":\"Question\",\n          \"name\":\"What should I send a supplier when the terminology is unclear?\",\n          \"acceptedAnswer\":{\n            \"@type\":\"Answer\",\n            \"text\":\"Send the protected equipment, relief scenario, MAWP, operating and set pressure, medium and phase, required capacity, relieving temperature, back pressure, valve design, materials, connections and required documents.\"\n          }\n        }\n      ]\n    }\n  ]\n}\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>PRV, PSV, safety valve, relief valve and safety relief valve are commonly used in pressure-protection discussions, but the words are not a complete engineering specification. Their meaning changes with the standard, industry, owner terminology and region. In many process plants, PSV is a tag abbreviation for a pressure safety valve or pressure-relief device. PRV may&#8230;<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-53609","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/posts\/53609","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/comments?post=53609"}],"version-history":[{"count":2,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/posts\/53609\/revisions"}],"predecessor-version":[{"id":55161,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/posts\/53609\/revisions\/55161"}],"wp:attachment":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/media?parent=53609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/categories?post=53609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/tags?post=53609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}