Cast Swing Check Valve – Class 150 / 300 / 600 / 900
BS 1868 full-bore swing check valve with hinged disc and integral seat ring. Seal welded seat with Stellite 6 disc overlay for long-term bubble-tight closure.
- Pressure
- Class 150 – Class 900
- Size Range
- 2" to 24"
- Testing
- API 598
⚠ Pending engineering review: Pending engineering sign-off: pressure/temperature figures per note above; seat-ring wording below is contradictory (separate A105 ring vs. integral with body) and needs confirmation.
- 01
Pressure Rating
Class 150 (32 Kg/cm²) / Class 300 (78 Kg/cm²) / Class 600 (159 Kg/cm²) / Class 900 (235 Kg/cm²)
- 02
Size Range
- 03
Material
- 04
Standards
01
Pressure Rating
Class 150 (32 Kg/cm²) / Class 300 (78 Kg/cm²) / Class 600 (159 Kg/cm²) / Class 900 (235 Kg/cm²)
Reference standard & materials
Same data as the printed catalogue
Reference standard
- Mfg. Std.
- BS 1868
- Face to Face
- ASME B16.10
- Flange End
- ASME B16.5
- 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 | SPW SS 304 / SS 316 + Graphite Filled | SPW SS 304 / SS 316 + Graphite Filled | SPW SS 304 / SS 316 + Graphite Filled | SPW SS 304 / SS 316 + Graphite Filled |
| 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 |
Dimensions
mm · ASME B16.5 flange details · weights on request
| Face to Face | Flange Details, ASME B16.5 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | DN | A (FE) | A (RTJ) | A (BW) | OD | PCD | RFD | T | ØH | N | H Appx. |
| 2" | 50 | 203 | 216 | 203 | 152 | 120.6 | 92.1 | 14.3 | 19 | 04 | 146 |
| 2.5" | 65 | 216 | 229 | 216 | 178 | 139.7 | 104.8 | 15.7 | 19 | 04 | 165 |
| 3" | 80 | 241 | 254 | 241 | 190 | 152.4 | 127.0 | 17.5 | 19 | 04 | 170 |
| 4" | 100 | 292 | 305 | 292 | 229 | 190.5 | 157.2 | 22.4 | 19 | 08 | 205 |
| 5" | 125 | 330 | 343 | 330 | 254 | 215.9 | 185.7 | 22.4 | 22 | 08 | 225 |
| 6" | 150 | 356 | 369 | 356 | 279 | 241.3 | 215.9 | 23.9 | 22 | 08 | 255 |
| 8" | 200 | 495 | 508 | 495 | 343 | 298.4 | 269.9 | 26.9 | 22 | 08 | 300 |
| 10" | 250 | 622 | 635 | 622 | 406 | 362.0 | 323.8 | 28.4 | 25 | 12 | 340 |
| 12" | 300 | 698 | 711 | 698 | 483 | 431.8 | 381.0 | 30.2 | 25 | 12 | 465 |
| 14" | 350 | 787 | 800 | 787 | 533 | 476.2 | 412.8 | 33.3 | 29 | 12 | 485 |
| 16" | 400 | 864 | 877 | 864 | 597 | 539.8 | 469.9 | 35.1 | 29 | 16 | 545 |
| 18" | 450 | 978 | 991 | 978 | 635 | 577.8 | 533.4 | 38.1 | 32 | 16 | 595 |
| 20" | 500 | 978 | 991 | 978 | 698 | 635.0 | 584.2 | 41.1 | 32 | 20 | 600 |
| 24" | 600 | 1295 | 1308 | 1295 | 813 | 749.3 | 692.2 | 46.0 | 35 | 20 | 750 |
Technical specifications
- Material
- Body: ASTM A216 GR.WCB (CS) / ASTM A351 GR.CF8M (SS) / ASTM A352 GR.LCC (LCS)
- Pressure Rating
- Class 150 (32 Kg/cm²) / Class 300 (78 Kg/cm²) / Class 600 (159 Kg/cm²) / Class 900 (235 Kg/cm²)
- Temperature Range
- -29°C to +427°C (CS per ASME B16.34; SS to +816°C)
- Eng Note
- Pending engineering sign-off: pressure/temperature figures per note above; seat-ring wording below is contradictory (separate A105 ring vs. integral with body) and needs confirmation.
- Size Range
- 2" to 24" (DN 50–600)
- Seat Ring
- ASTM A105 + Stellite 6; integral with body + Stellite 6
- Disc
- ASTM A216 GR.WCB + 13% Cr. overlay or Stellite 6
- Hinge Pin
- ASTM A182 GR.F6a (CS) / SS 316 (SS)
- End Connections
- Flanged (ASME B16.5), RTJ, Butt Weld (ASME B16.25)
- Face T To Face
- ASME B16.10
- Model Numbers
- VX-SCV-BB-1501 (Cl.150) to VX-SCV-BB-1504 (Cl.900)
Standards & testing
- MFG. STD: BS 1868
- Face to Face: ASME B16.10
- Flange End: ASME B16.5
- 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.
Related valves in this family
Dual Plate Check Valve – Wafer Type
Retainer-less, metal-seated dual plate check valve per API 594 in a compact wafer body clamped between two line flanges. INCONEL X-750 spring gives fast, non-slam closure for high-velocity service.
View detailsDual Plate Check Valve – Double Flange End
Retainer-less, metal-seated dual plate check valve per API 594 in a full double-flange body per ASME B16.5. Self-supporting on the line without relying on the mating flanges, with the same INCONEL X-750 non-slam closure as the Wafer and Full Lug types.
View detailsDual Plate Check Valve – Full Lug Type
Retainer-less, metal-seated dual plate check valve per API 594 in a tapped full-lug body that bolts directly to the line flanges, allowing downstream piping to be removed for end-of-line service without draining the run. Same INCONEL X-750 non-slam closure as the Wafer and Double Flange types.
View details