ZBA900 Series: ZBA901/ZBA902/ZBA911/ZBA912 ZBA900 Series Spring Safety Valve
ZBA900 Series Spring Safety Valve for oil, natural gas, chemical, electric power and city gas systems requiring accurate spring safety valve protection. Key selection data include DN20/32 to DN200/300 inlet/outlet combinations, PN1.6 MPa to PN4.0 MPa, -196 deg C to 425 deg C, 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: DN20/32 to DN200/300 inlet/outlet combinations
- Pressure rating: PN1.6 MPa to PN4.0 MPa
- Temperature: -196 deg C to 425 deg C
- Connection: Flanged inlet and outlet, inlet/outlet combinations per catalog table
- Media: Oil, natural gas, chemical process fluids, electric power and city gas service media
- Drawings, test records and material documents confirmed for the ordered configuration.
Technical Specifications and Selection Data
Product Model
ZBA900 Series: ZBA901/ZBA902/ZBA911/ZBA912
Size Range
DN20/32 to DN200/300 inlet/outlet combinations
Pressure Rating
PN1.6 MPa to PN4.0 MPa
Temperature Range
-196 deg C to 425 deg C
Applicable Media
Oil, natural gas, chemical process fluids, electric power and city gas service media
Connection Type
Flanged inlet and outlet, inlet/outlet combinations per catalog table
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: ZBA901/902/911/912 identify ZBA900 structural variants; PN and DN define pressure and inlet/outlet size combination.
Typical application: oil, natural gas, chemical, electric power and city gas systems requiring accurate spring safety valve protection
Capacity review: Catalog page includes flow-through hole diameter, flow area and main connection dimensions for each DN combination.
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 049-050. Verify critical dimensions against the approved order drawing before fabrication or piping release.
| Type / Model | Nominal Pressure (PN) | Column 3 | BOdy | MateriaI | Column 6 | Column 7 | Column 8 | NominaI | Dim. | Column 11 | Column 12 | Operatlng | Temperature | Column 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZBA901/902/911/912 | PN40 ／ 16 | WCB 、 | CF8 、 | CF8M 、 | CF3M | DN20/ | 32 · DN | 200/300 | -196 | deg C – 425deg C | ||||
| do (mm)Flow-through (m2) Ao Weig | DN | 20/32 | 25/40 | 32/50 | 40/ | 65 | 50/80 | 65 ／ 100 | 80/125 | 100 | ／ 150 | 125/200 | 150/250 | 200 ／ 3 |
| do (mm)Flow-through (m2) Ao Weig | Hole Diameter | 18 | 22 | 29 | 36 | 45 | 58 | 72 | 80 | 100 | 125 | 150 | ||
| do (mm)Flow-through (m2) Ao Weig | Flow-through Area | 254 | 398 | 661 | 1018 | 1590 | 2688 | 4072 | 6362 | 8825 | 12266 | 17663 | ||
| do (mm)Flow-through (m2) Ao Weig | ht (Kg) | 8.5 | 1 0 | 14 | 20 | 28 | 40 | 53 | 80 | 125 | 165 | 456 |
| D NxD N1 | 20×32 | 25×40 | 32×50 | 40×65 | 50×80 | 65×100 | 80×125 | 100×150 | 125×200 | 150×250 | 200×300 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 220 | 250 | 285 | 340 | |||||||
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 105 | 1 15 | 140 | 150 | 165 | 185 | 200 | ||||
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 235 | 220 | 300 | 375 | |||||||
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 180 | 210 | 240 | 295 | |||||||
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 75 | 85 | 100 | 1 10 | 125 | 145 | 160 | 190 | 220 | 250 | 320 |
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 20 | 20 | 20 | 22 | 24 | 26 | 28 | 31 | 34 | 34 | |
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 140 | 150 | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 405 | 460 |
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 100 | 1 10 | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 355 | 410 |
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 19 | 19 | 20 | 20 | 20 | 20 | 22 | 22 | 27 | 29 | 30 |
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 85 | 100 | 1 10 | 1 15 | 120 | 140 | 160 | 180 | 200 | 225 | 300 |
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 95 | 105 | 1 15 | 140 | 150 | 170 | 195 | 220 | 250 | 285 | 350 |
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | 298 | 311 | 315 | 355 | 405 | 555 | 580 | 690 | 845 | 890 | 1000 |
| PN16PN40PN16PN40PN16 ( ) Hole ( with Plu Sewa e | G3 ／ 8" | G1 | /2" |
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: WCB, CF8, CF8M and CF3M body material options. Trim and internals: Stainless and hard alloy trim selected by body material and medium. 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 049-050. 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 ZBA900 Series: ZBA901/ZBA902/ZBA911/ZBA912 ZBA900 Series Spring Safety Valve page?
ZBA900 Series: ZBA901/ZBA902/ZBA911/ZBA912
What size, pressure and temperature data should be confirmed?
Size: DN20/32 to DN200/300 inlet/outlet combinations. Pressure: PN1.6 MPa to PN4.0 MPa. Temperature: -196 deg C to 425 deg C. Confirm the exact combination for the selected model.
Which media can this product family handle?
Oil, natural gas, chemical process fluids, electric power and city gas service 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.