Stainless steel Dual plate check valveAdoptive Standards
Valve Design: API 609
Pressure Test: API 598
Flange end: ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16
Standard Test
Body test1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.
Seat Test: 1.1 times the working pressure with water.
Function / Operation Test: At the time of final inspection, each valve and its actuator (Flow-Control Lever / Gear / Pneumatic Actuator), under goes a complete operating test (Open/Close). This test carried out without pressure and at ambient temperature.
It ensures the correct operation of the valve / actuator assembly with accessories such as solenoid valve, limit switches, air filter regulator etc.
| Name | Body | Seat | Disc | Stem | Spring |
| Material | SS304 | NBR | SS304 | SS410 | SS304 |
| DN | NPS | L | D | D1 | D2 |
| 40 | 1 1/2'' | 43 | 92 | 55 | 41 |
| 50 | 2'' | 43 | 107 | 65.5 | 51 |
| 65 | 2 1/2'' | 46 | 127 | 81 | 65 |
| 80 | 3'' | 64 | 142 | 95 | 80 |
| 100 | 4'' | 64 | 162 | 117.5 | 102 |
| 125 | 5'' | 70 | 192 | 145.5 | 127 |
| 150 | 6'' | 76 | 218 | 170.5 | 152 |
| 200 | 8'' | 89 | 273 | 227.5 | 203 |
| 250 | 10'' | 114 | 328 | 266 | 254 |
| 300 | 12'' | 114 | 378 | 312 | 305 |
| 350 | 14'' | 127 | 438 | 361 | 350 |
| 400 | 16'' | 140 | 489 | 406 | 400 |
| 450 | 18'' | 152 | 539 | 450 | 450 |
| 500 | 20'' | 152 | 594 | 505 | 500 |
| 600 | 24'' | 178 | 695 | 624 | 600 |
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