Refinery Safety Valve Series: A and TA model families Refinery Safety Valve Series
Refinery Safety Valve Series for petrochemical and refinery pressure vessels requiring vessel pressure control and full discharge when pressure exceeds set point. Key selection data include Model-series dependent, including A and TA type dimension tables, Catalog model table covers set-pressure ranges approximately 0.03-4.2 MPa and related pressure classes, Standard refinery service ranges up to 300 deg C and high-temperature ranges above 300 deg C to 550 deg C by model, materials, connection standard and set pressure.
Final set pressure, certified relieving capacity, material code and connection standard must be confirmed on the approved datasheet before purchase.
- Size range: Model-series dependent, including A and TA type dimension tables
- Pressure rating: Catalog model table covers set-pressure ranges approximately 0.03-4.2 MPa and related pressure classes
- Temperature: Standard refinery service ranges up to 300 deg C and high-temperature ranges above 300 deg C to 550 deg C by model
- Connection: Flanged refinery safety valve designs, including A and TA structures
- Media: Gas or liquid with stable back pressure, non-corrosive or slightly sulfur-corrosive refinery media
- Drawings, test records and material documents confirmed for the ordered configuration.
Technical Specifications and Selection Data
Product Model
Refinery Safety Valve Series: A and TA model families
Size Range
Model-series dependent, including A and TA type dimension tables
Pressure Rating
Catalog model table covers set-pressure ranges approximately 0.03-4.2 MPa and related pressure classes
Temperature Range
Standard refinery service ranges up to 300 deg C and high-temperature ranges above 300 deg C to 550 deg C by model
Applicable Media
Gas or liquid with stable back pressure, non-corrosive or slightly sulfur-corrosive refinery media
Connection Type
Flanged refinery safety valve designs, including A and TA structures
Standards and Compliance
GB/T 12241, GB/T 12242 and GB/T 12243 for safety valve design, performance and test references; model coding follows the JB/T 308 valve model method where applicable.
Engineering Insight: Model Logic and Application Boundary
Model code: A and TA model series identify refinery safety valve structures and set-pressure/temperature ranges; final model is selected from the catalog model table.
Typical application: petrochemical and refinery pressure vessels requiring vessel pressure control and full discharge when pressure exceeds set point
Capacity review: Discharge capacity depends on A/TA model series, set pressure and medium. Use catalog model table and safety valve discharge calculation for sizing.
This product family should not be selected from model code, nominal size or pressure class alone. Confirm the relieving scenario, required capacity, set pressure, operating margin, temperature, back pressure and actual connection standard.
Dimensions and Selection Guide
The table below is transcribed from catalog page 043-045. Verify critical dimensions against the approved order drawing before fabrication or piping release.
| Type / Model | Nominal Diameter (DN) | LI | Column 4 | Column 5 | G1 | Column 7 | Column 8 | g2 | Column 10 | Column 11 | Column 12 | Column 13 | . d | Column 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D40AI TAI D40AI5F40.TAI5F40.A2J16TA2 」 16A2H40TA2H40A3L16TA3L16 | 100 | 99 | 1 1 5 | 85 | 57 | 160 | 125 | 100 | 1 9 | 16 | 4 4 | 4.18 | 327 424.5 | |
| D40AI TAI D40AI5F40.TAI5F40.A2J16TA2 」 16A2H40TA2H40A3L16TA3L16 | 120 | 107 | 145 | 1 1 0 | 75 | 160 | 125 | 100 | 20 | 16 | 4 8 | 4.18 | 363.6 433.5 | |
| D40AI TAI D40AI5F40.TAI5F40.A2J16TA2 」 16A2H40TA2H40A3L16TA3L16 | 150 | 139 | 160 | 125 | 92 | 195 | 160 | 135 | 14 | 22 | 20 | 46130 | 46252 | 409 539.5 |
| D40AI TAI D40AI5F40.TAI5F40.A2J16TA2 」 16A2H40TA2H40A3L16TA3L16 | 150 | 139 | 160 | 125 | 87 | 195 | 160 | 135 | 14 | 22 | 20 | 46130 | 46252 | 409 539.5 |
| D40AI TAI D40AI5F40.TAI5F40.A2J16TA2 」 16A2H40TA2H40A3L16TA3L16 | 160 | 147 | 195 | 160 | 133 | 215 | 180 | 155 | 22 | 20 | 8 8 | 8.18 | 487 652 | |
| A3K40TA3K40 6A4PI TA4P16A4N40TA4N40A6R5 5.TA6R5 5A6Q16TA6Q16 | 160 | 149 | 195 | 160 | 120 | 215 | 180 | 155 | 1 4 | 24 | 20 | 46252 | 8.18 | 489 654 |
| A3K40TA3K40 6A4PI TA4P16A4N40TA4N40A6R5 5.TA6R5 5A6Q16TA6Q16 | 200 | 176 | 215 | 180 | 153 | 280 | 240 | 210 | 1 3 | 22 | 24 | 8 8 | 8.23 | 596 789 |
| A3K40TA3K40 6A4PI TA4P16A4N40TA4N40A6R5 5.TA6R5 5A6Q16TA6Q16 | 200 | 182.5 | 230 | 190 | 149 | 280 | 240 | 210 | 17.5 | 26 | 24 | 46257 | 8.23 | 639.5 832.5 |
| A3K40TA3K40 6A4PI TA4P16A4N40TA4N40A6R5 5.TA6R5 5A6Q16TA6Q16 | 230 | 228 | 280 | 240 | 195 | 335 | 295 | 265 | 24 | 26 | 46257 | 46379 | 757 976 | |
| A3K40TA3K40 6A4PI TA4P16A4N40TA4N40A6R5 5.TA6R5 5A6Q16TA6Q16 | 230 | 228 | 280 | 240 | 189 | 335 | 295 | 265 | 24 | 26 | 46257 | 46379 | 775 986 |
| Senes | Type / Model | Nominal Diameter (DN) | Nominal Pressure (PN) | Nominal Pressure (PN) | Code | dO Diameter Size | Area cm2 | Temperatu Operatlng deg C re |
|---|
| Nominal Pressure (PN) | Nominal Pressure (PN) | 25 0x50.78 ( 1 ) | x2.00 ( 1 | 8.54 50x | 80 ( 2 5 ).31 | 19 80.62 x | 100Spring12 ( 3.) 56NO. | 40 100.69x | 150 28 ( 4.26 ) | 103 150.82x | 200 72 ( 6.35 ) |
|---|
RFQ checklist
RFQ checklist: model or valve type, DN/NPS, PN/Class, set pressure, relieving medium, operating temperature, body and trim material, inlet/outlet connection standard, cap/lever/pilot options, quantity, drawing, certificate and inspection requirements.
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: Refinery-service carbon steel, alloy steel or stainless body according to A/TA model family and corrosion/temperature requirement. Trim and internals: Hard alloy trim and refinery-service internals selected by temperature, pressure and corrosion condition. 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 043-045. Project compliance remains subject to the approved datasheet, drawing, calculation and controlled certificates for the ordered configuration.
Review material traceability, type-test scope and project certificate requirements.
Related Products
FAQ
Safety Valve FAQs
What models are covered by this Refinery Safety Valve Series: A and TA model families Refinery Safety Valve Series page?
Refinery Safety Valve Series: A and TA model families
What size, pressure and temperature data should be confirmed?
Size: Model-series dependent, including A and TA type dimension tables. Pressure: Catalog model table covers set-pressure ranges approximately 0.03-4.2 MPa and related pressure classes. Temperature: Standard refinery service ranges up to 300 deg C and high-temperature ranges above 300 deg C to 550 deg C by model. Confirm the exact combination for the selected model.
Which media can this product family handle?
Gas or liquid with stable back pressure, non-corrosive or slightly sulfur-corrosive refinery media. Material and sealing compatibility require review for the actual fluid composition and temperature.
Can the catalog dimension table be used for final fabrication?
Use it for preliminary review only. Confirm critical dimensions, connection details and orientation on the approved order drawing before piping or equipment fabrication.
What should be included in the RFQ?
RFQ checklist: model or valve type, DN/NPS, PN/Class, set pressure, relieving medium, operating temperature, body and trim material, inlet/outlet connection standard, cap/lever/pilot options, quantity, drawing, certificate and inspection requirements.