Cast Steel Check Valve Pressure Seal
“VALTECH” robust design, Cast Steel Swing Check Valves are designed and manufactured with reference to Standard BS-1868 for Pipelines 50NB and above. They are available in Flanged and Buttweld ends. Hard Faced Trim material ensures perfect Sealing and longer life. If required, Valves can be offered under any THIRD PARTY INSPECTION.
“VALTECH” Cast Steel Swing Check Valves are available in various materials like Cast Carbon Steel conforming to ASTM-A-216 Gr. WCB, Cast Alloy Steel like ASTM-A-217 Gr. WC-6 / WC-9; and Cast Stainless Steel like ASTM-A-351 Gr. CF-8, CF-3, CF-8M & CF-3M. Size range starts from 50 NB through 900NB and pressure rating from 600# to 2500#.
Special Features
- Gear Operation-applied force exceeds 350N
- Limit Switch Arrangement
- Electrical & Pneumatic Arrangement
- Lantern ring arrangement for Vacuum service
- IBR Certified
- NACE MR 0175 & MR 0103
- Position indicator
- Locking Arrangement
- Extended Stem
| MANUFACTURING REFERENCE STANDARDS | |
|---|---|
| Design | BS-1868 / ANSI B 16.34 |
| Ends | Flanged to ANSI B 16.5 / Butt Weld to ANSI B 16.25 |
| Testing | API 598 |
| MATERIAL OF CONSTRUCTION | ||
|---|---|---|
| Sr.No. | Parts Name | Material |
| 1 | Body & Cover | ASTM A 216 Gr. WCB, ASTM A 352 Gr. LCB, ASTM A 351 Gr. CF8/CF3/CF8M/CF3M |
| 2 | Disc / Seat Ring | ASTM A 216 Gr. WCB, ASTM A 351 Gr. CF8/CF3/CF8M/CF3M |
| 3 | Gasket | Compressed Asbestos Fibre / Spiral Wound 304/316 CAF filler. (Applicable for bolted cover Valves) |
| 4 | Pressure Seal Ring | Expanded Graphite (Applicable for Pressure Seal Check Valves.) |
| 5 | Stud/Nut | ASTM A 193 Gr.B7/B8 & ASTM A 194 Gr. 2H/8 |
| DIMENSIONS | |||||||
|---|---|---|---|---|---|---|---|
| SIZE | 900# | 1500# | 2500# | ||||
| MM | INCH | A | B | A | B | A | B |
| 40 | 1.1/2” | * | * | * | * | * | * |
| 50 | 2” | * | * | 368 | 185 | 279 | 210 |
| 65 | 2.1/2” | * | * | 419 | 215 | * | * |
| 80 | 3” | 381 | 245 | 470 | 245 | 368 | 230 |
| 100 | 4” | 457 | 275 | 546 | 275 | 457 | 260 |
| 125 | 5” | 559 | 315 | 673 | 315 | * | * |
| 150 | 6” | 610 | 350 | 705 | 350 | 610 | 330 |
| 200 | 8” | 737 | 440 | 832 | 440 | 762 | 410 |
| 250 | 10” | 838 | 535 | 991 | 535 | * | * |
| 300 | 12” | 965 | 630 | 1130 | 630 | * | * |
| 350 | 14” | * | * | * | * | * | * |
| 400 | 16” | * | * | * | * | * | * |
| 450 | 18” | * | * | * | * | * | * |
| 500 | 20” | * | * | * | * | * | * |
| 600 | 24” | * | * | * | * | * | * |
* Refer To VALTECH
** Technical Improvements and alterations reserved