ZBYA42H-160/250/400; ZBYA802Y-600 Safety Relief Valve
Safety Relief Valve for hydraulic transfer pipelines and high-pressure process systems requiring overflow or overpressure relief. Key selection data include DN15-DN40 for YA42H high-pressure series; YA802Y dimensions per catalog, PN160, PN250, PN400 and PN600, Up to 200 deg C, materials, connection standard and set pressure.
最终整定压力、认证泄放量、材质代号及连接标准须以经批准的参数表为准，并在采购前予以确认。.
- Size range: DN15-DN40 for YA42H high-pressure series; YA802Y dimensions per catalog
- Pressure rating: PN160, PN250, PN400 and PN600
- Temperature: Up to 200 deg C
- Connection: High-pressure flanged or threaded connections according to model
- Media: Petroleum, chemical and other hydraulic conveying pipelines
- 图纸、试验记录和材料文件已按订购配置确认。.
技术参数与选型数据
产品型号
ZBYA42H-160/250/400; ZBYA802Y-600
尺寸范围
DN15-DN40 for YA42H high-pressure series; YA802Y dimensions per catalog
压力等级
PN160, PN250, PN400 and PN600
温度范围
Up to 200 deg C
适用介质
Petroleum, chemical and other hydraulic conveying pipelines
连接类型
High-pressure flanged or threaded connections according to model
标准与合规
安全阀设计、性能及试验参考遵循 GB/T 12241、GB/T 12242 和 GB/T 12243；适用时，型号编制遵循 JB/T 308 阀门型号编制方法。.
工程解析：型号逻辑与应用边界
型号代码： YA42H and YA802Y identify safety relief/overflow valve variants; pressure digits identify high-pressure PN rating.
典型应用： hydraulic transfer pipelines and high-pressure process systems requiring overflow or overpressure relief
排量审查： 主要连接尺寸列于源目录页面。排量及流道尺寸应根据整定压力、介质、温度及适用规范进行确认。.
本产品系列不应仅依据型号、公称尺寸或压力等级进行选型。请确认泄放工况、所需泄放量、整定压力、操作裕量、温度、背压及实际连接标准。.
尺寸与选型指南
The table below is transcribed from catalog page 39. Verify critical dimensions against the approved order drawing before fabrication or piping release.
| Nominal Pressure (PN) | 公称通径（DN） | Column 3 | Column 4 | D | Column 6 | M | do | Column 9 | Column 10 | RC | Column 12 | Column 13 | Column 14 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| YA42H-160/250/400 | 95 | 105 | 46130 | M33x3 | 10 | 88 | 1 17 | 3 | 25 | 20 | 248 | ||
| YA42H-160/250/400 | 15 | 105 | 135 | 6.26 | M48x3 | 15 | 95 | 140 | 25 | 25 | 290 | ||
| YA42H-160/250/400 | 20 | 135 | 200 | 46202 | M56x3 | 20 | 145 | 170 | 40 | 30 | 356 | ||
| YA42H-160/250/400 | 25 | 140 | 200 | 6.29 | M64x3 | 25 | 145 | 173 | 2" | 40 | 38 | 440 | |
| YA42H-160/250/400 | 32 | 160 | 210 | 46202 | M64x3 | 32 | 155 | 181 | 21/2 | 40 | 40 | 520 | |
| Type | (DN) | Rc | |||||||||||
| YA802Y-600 | 1/2" | 46024 | 105 | 90 | 280 | ||||||||
| YA802Y-600 | 600 | ||||||||||||
| YA802Y-600 | 25 | 105 | 1 | 15 | 305 |
| 型号 | 公称通径（DN） | R | Rc | L | L1 | Approx. H |
|---|---|---|---|---|---|---|
| YA802Y-600 | 1/2" | 46024 | 105 | 90 | 280 | |
| YA802Y-600 | 25 | 105 | 1 15 | 305 |
RFQ checklist
询价清单：型号或阀门类型、DN/NPS、PN/Class、整定压力、泄放介质、工作温度、阀体及内件材质、进出口连接标准、阀帽/杠杆/先导选项、数量、图纸、证书及检验要求。.
Failure Analysis, Manufacturing Evidence and Quality Control
Common misapplication risks: incorrect thread or connection standard, insufficient certified relieving capacity, unsuitable body or trim material, operating pressure too close to set pressure, unreviewed back pressure, and installation loads transferred to the valve.
Material review: body materials: High-pressure carbon/alloy steel or stainless material according to model and service. Trim and internals: Hard alloy or corrosion-resistant trim for hydraulic and chemical service. Spring and stem: 50CrVA spring for standard service; stainless or coated fluoroplastic/304 spring options for corrosive service where specified.
Testing and inspection: Set pressure calibration, shell strength test, seat tightness/leakage test, reseating/blowdown check, dimensional inspection and material verification can be supplied according to the confirmed standard and order requirements.
Source and scope: product data is based on Zobai Safety Valve Product Catalog.pdf, catalog page 39. Project compliance remains subject to the approved datasheet, drawing, calculation and controlled certificates for the ordered configuration.
Review material traceability, type-test scope 和 project certificate requirements.
Related Products
常见问题
Safety Valve FAQs
What models are covered by this ZBYA42H-160/250/400; ZBYA802Y-600 Safety Relief Valve page?
ZBYA42H-160/250/400; ZBYA802Y-600
应确认哪些尺寸、压力和温度数据？
Size: DN15-DN40 for YA42H high-pressure series; YA802Y dimensions per catalog. Pressure: PN160, PN250, PN400 and PN600. Temperature: Up to 200 deg C. Confirm the exact combination for the selected model.
该产品系列可处理哪些介质？
Petroleum, chemical and other hydraulic conveying pipelines. Material and sealing compatibility require review for the actual fluid composition and temperature.
产品目录中的尺寸表能否用于最终制造？
仅用于初步审查。在管道或设备制造前，请根据批准的订单图纸确认关键尺寸、连接细节和方向。.
询价单（RFQ）中应包含哪些内容？
询价清单：型号或阀门类型、DN/NPS、PN/Class、整定压力、泄放介质、工作温度、阀体及内件材质、进出口连接标准、阀帽/杠杆/先导选项、数量、图纸、证书及检验要求。.