Product Details
Single Plate Wafer Check Valve
Wafer Design Plate Type Check Valve has short face-to-face
dimensions and low weight allows a simple space saving installation
between the companion flanges. The valves are suitable to mounting
between weld neck or slip on type companion flanges of different
standards.
They are specially developed for applications where a low-pressure
loss is essential. Opening and closing of the valve will take place
at an extremely low-pressure difference over the valve disc. The
eccentric disc shaft combination with the disc seat guarantees a
positive shut off returning media. Wafer check valves are becoming
the preferred type of check valve for most applications, due to
their compact design and relatively low cost.
Compliance Standards |
Parameter | Compliance to |
Design | API 6D / API 594 |
Pressure Temperature Rating | ASME B 16.34 |
Face to Face / End to End | API 6D |
End Connection Dimensions | Wafer to suit PN 20 (ASME 150 Class), PN 50 (ASME 300 Class),PN 100
(ASME 600 Class) |
Part No. | Part | Material |
1 | Body | GG 25/ GGG 40 / A 126 WCB/ A 351 CF 8/ CF 8M |
2 | Clapper / Disc | GG 25/ GGG 40 / A 126 WCB/ A 351 CF 8/ CF 8M |
3 | Body Seal / O Ring | Nitrile / EPDM |
4 | Clapper /Disc Seal | AISI 304/ AISI 316 |
5 | Pin | AISI 304/ AISI 316 |
ISO PN 20/ ASME 150 CLASS |
| 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
A | 30 | 38 | 52 | 72 | 114 | 157 | 195 | 230 | 270 | 310 | 360 | 406 |
B | 19 | 19 | 19 | 19 | 19 | 29 | 29 | 38 | 44 | 51 | 60 | 64 |
C | 105 | 120 | 133 | 171 | 219 | 276 | 337 | 406 | 446 | 508 | 542 | 598 |
ISO PN 50/ ASME 300 CLASS |
| 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
A | 30 | 38 | 52 | 72 | 114 | 157 | 195 | 242 | 270 | 310 | 360 | 406 |
B | 19 | 19 | 19 | 19 | 22 | 29 | 38 | 51 | 51 | 51 | 76 | 83 |
C | 111 | 131 | 149 | 179 | 216 | 222.5 | 280 | 340 | 446 | 508 | 542 | 598 |
ISO PN 100/ ASME 600 CLASS |
| 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
A | 30 | 38 | 52 | 72 | 114 | 157 | 195 | 242 | 270 | 310 | 360 | 406 |
B | 19 | 19 | 19 | 22 | 29 | 38 | 57 | 60 | 67 | 73 | 83 | 92 |
C | 111 | 131 | 149 | 179 | 216 | 222.5 | 280 | 340 | 446 | 508 | 542 | 598 |
NPS | CLASS |
150 | 300 | 600 | 900 | 1500 | 2500 |
2 | 60 | 60 | 60 | 70 | 70 | 70 |
2½ | 67 | 67
| 67 | 83 | 83 | 83 |
3 | 73 | 73 | 73 | 83 | 83 | 86 |
4 | 73 | 73 | 79 | 102 | 102 | 105 |
6 | 98 | 98 | 136 | 159 | 159 | 159 |
8 | 127 | 127 | 165 | 206 | 206 | 206 |
10 | 146 | 146 | 213 | 241 | 248 | 254 |
12 | 181 | 181 | 229 | 292 | 305 | 305 |
14 | 184 | 222 | 273 | 356 | 356 | ... |
16 | 191 | 232 | 305 | 384 | 384 | ... |
18 | 203 | 264 | 362 | 451 | 468 | ... |
20 | 219 | 292 | 368 | 451 | 533 | ... |
24 | 222 | 318 | 438 | 495 | 559 | ... |
30 | 305 | 368 | 505 | ... | ... | ... |
36 | 368 | 483 | 635 | ... | ... | ... |
42 | 432 | 568 | 701 | ... | ... | ... |
48 | 524 | 629 | ... | ... | ... | ... |
NPS | 150 | 300 | 600 | 900 | 1500 | 2500 |
CLASS |
Face to Face dimensions Single-Plate Wafer Check Valves API Std.
594 Class 125-2500 Type A