Pressure Seal Swing Check Valve – Class 900 / 1500 / 2500
ASME B16.34 pressure-seal swing check valve for high-pressure butt-weld service. Self-sealing bonnet with Grafoil gasket and Stellited seat for extreme pressure integrity.
- Pressure
- Class 900 – Class 2500
- Size Range
- 2" to 8"
- Testing
- API 598
⚠ Pending engineering review: Pending engineering sign-off: pressure figure is a hydro-test (shell) value, not a confirmed Class rating.
- 01
Pressure Rating
Class 900 (235 Kg/cm²) / Class 1500 (391 Kg/cm²) / Class 2500 (651 Kg/cm²)
- 02
Size Range
- 03
Material
- 04
Standards
01
Pressure Rating
Class 900 (235 Kg/cm²) / Class 1500 (391 Kg/cm²) / Class 2500 (651 Kg/cm²)
Reference standard & materials
Same data as the printed catalogue
Reference standard
- Mfg. Std.
- ASME B16.34
- Butt Weld End
- ASME B16.25
- Insp. & Test.
- API 598
- Press & Temp.
- ASME B16.34
Material of construction
| No. | Description | Carbon Steel | Stainless Steel | Alloy Steel | Low Carbon Steel |
|---|---|---|---|---|---|
| 01 | Body | ASTM A216 GR.WCB | ASTM A351 GR.CF8M | ASTM A217 GR.WC9 | ASTM A352 GR.LCC |
| 02 | Seat Ring | ASTM A105 + Stellite 6 | ASTM A182 F316 + Stellite 6 | ASTM A182 F22 + Stellite 6 | ASTM A182 F316 + Stellite 6 |
| 03 | Disc | ASTM A216 GR.WCB + OVERLAY 13% Cr. OR ASTM A217 GR.CA15 | ASTM A351 GR.CF8M OR Stellite 6 | ASTM A217 GR.WC9 + Stellite 6 | ASTM A352 GR.LCC + OVERLAY 316 OR Stellite 6 |
| 04 | Hinge Pin | ASTM A182 GR.F6a | SS 316 | ASTM A182 GR.F6a | SS 316 |
| 05 | Gasket | Grafoil | Grafoil | Grafoil | Grafoil |
| 06 | Cover | ASTM A216 GR.WCB | ASTM A351 GR.CF8M | ASTM A217 GR.WC9 | ASTM A352 GR.LCC |
| 07 | Joint Stud / Joint Nut | ASTM A193 GR. B7 / ASTM A194 GR. 2H | ASTM A193 GR. B8M / ASTM A194 GR. 8M | ASTM A193 GR. B7 / ASTM A194 GR. 2H | ASTM A320 GR. L7 / ASTM A194 GR. 7 |
| 08 | Hinge | ASTM A216 GR.WCB | ASTM A351 GR.CF8M | ASTM A217 GR.WC9 | ASTM A352 GR.LCC |
| 09 | Spacer Ring | Carbon Steel | Stainless Steel | Carbon Steel | Stainless Steel |
| 10 | Segment Ring | Carbon Steel | Stainless Steel | Carbon Steel | Stainless Steel |
Dimensions
mm · ASME B16.5 flange details · weights on request
| A (BW) | ||||
|---|---|---|---|---|
| Size | DN | SP | LP | H Appx. |
| 2" | 50 | 216 | 368 | 260 |
| 2.5" | 65 | 254 | 419 | 275 |
| 3" | 80 | 305 | 381 | 295 |
| 4" | 100 | 356 | 457 | 350 |
| 5" | 125 | 432 | 559 | 405 |
| 6" | 150 | 508 | 610 | 450 |
| 8" | 200 | 660 | 737 | 530 |
| 10" | 250 | 787 | 838 | 600 |
| 12" | 300 | 914 | 965 | 710 |
| 14" | 350 | 991 | 1029 | 825 |
| 16" | 400 | 1092 | 1130 | 950 |
Technical specifications
- Material
- Body: ASTM A216 GR.WCB (CS) / ASTM A351 GR.CF8M (SS) / ASTM A352 GR.LCC (LCS)
- Pressure Rating
- Class 900 (235 Kg/cm²) / Class 1500 (391 Kg/cm²) / Class 2500 (651 Kg/cm²)
- Temperature Range
- -29°C to +538°C (CS per ASME B16.34; rated Class 900–2500)
- Eng Note
- Pending engineering sign-off: pressure figure is a hydro-test (shell) value, not a confirmed Class rating.
- Size Range
- 2" to 8" (DN 50–200)
- End Connections
- Butt Weld End (ASME B16.25)
- Gasket
- Grafoil
- Model Numbers
- VX-SCV-PS-1511 (Cl.900) / VX-SCV-PS-1512 (Cl.1500) / VX-SCV-PS-1513 (Cl.2500)
Standards & testing
- MFG. STD: ASME B16.34
- Butt Weld End: ASME B16.25
- Insp. & Test: API 598
- Press. & Temp: ASME B16.34
Custom engineering
Special trims, exotic materials and non-standard dimensions are available against your datasheet — send it with your quote request and our engineering team will respond with a compliant proposal.
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