Cast Iron/ductile iron Duo Plate Wafer Check Valves, single plate wafer check valveStandard compliance:
1) Design and manufacture: API594
2) Test and inspection: API 598
3) Face to face dimensions: BS EN 558-1
4) Install between flanges: ANSI 16.10 CLASS 125, DIN2501 PN10/16, BS4504 PN10/16
Specifications:
1) Size: DN40 to DN1000
2) Class: PN10, PN16, 125LB, 150LB
3) Type: Double Disc, Single Disc, wafer type, NBR/EPDM/VITON/PTFE Seat
4) Material: CAST IRON, DUCTILE IRON, CF8, CF8MDesign and manufacture: MSS SP-67, API 609
Test and inspection: API 598 .
Flanged end: ANSI, BS, DIN etc.
Resilient seat
Size: 2" ~ 24" (DN50 ~ 600)
Working pressure: 1.0MPa/1.6MPa
Standard materials of parts
| No. | Part Name | Material |
| 1 | Body | Grey iron, Ductile iron, Cast steel, Stainless steel |
| 2 | Disc | Ductile iron, Aluminum bronze, Stainless steel |
| 3 | Spring | Stainless steel |
| 4 | Hinge Pin | Stainless steel |
| 5 | Stop Pin | Stainless steel |
| 6 | Plug | Steel |
| 7 | Body Bearing | PTFE |
| 8 | Spring Bearing | PTFE |
| 9 | Eye Bolt | Steel |
| 10 | Body Seat | EPDM, Neoprene and NBR etc. |
Dimensions (in mm & inch) and weight
| Size | φA | φE | B | GR | F | WT
KGS |
| mm | inch |
| 50 | 2" | 102 | 65 | 43 | 28.8 | 19 | 1.5 |
| 65 | 2.1/2" | 121 | 80 | 46 | 36.1 | 20 | 2.4 |
| 80 | 3" | 134 | 94 | 64 | 43.4 | 28 | 3.6 |
| 100 | 4" | 171 | 117 | 64 | 52.8 | 27 | 5.7 |
| 125 | 5" | 193 | 145 | 70 | 65.7 | 30 | 7.3 |
| 150 | 6" | 219 | 170 | 76 | 78.6 | 31 | 9.0 |
| 200 | 8" | 276 | 224 | 89 | 104.4 | 33 | 17 |
| 250 | 10" | 336 | 265 | 114 | 127 | 50 | 26 |
| 300 | 12" | 406 | 310 | 114 | 148.3 | 43 | 42 |
| 350 | 14" | 448 | 360 | 127 | 172.4 | 45 | 55 |
| 400 | 16" | 489 | 410 | 140 | 197.4 | 52 | 75 |
| 450 | 18" | 511 | 450 | 152 | 217.8 | 58 | 101 |
| 500 | 20" | 546 | 505 | 152 | 241 | 58 | 111 |
| 600 | 24" | 603 | 624 | 178 | 295.4 | 73 | 172 |
All our products are designed and manufactured strictly in conformity with the standard of API, ANSI, AWWA, JIS, BS and DIN, etc. Most of our manufacturers have obtained ISO 9001, API 6D, TUV and CE certificates to ensure the quality stability of the products. We provide EN10204-3.1B. Mill Test Certificate for all our supplied products.
Our products range covers all kinds of ball valves, gate valves, globe valves, check valves, butterfly valves, plug valves, safety relief valves, bellow sealed valves, diaphragm valves, steam traps, knife gate valves, strainers, quick couplings, all types of flanges, pipe fittings, bolts&nuts&gaskets, steel plates, tubing and casing, line pipes and other pipeline equipment & components, with the materials of carbon steel, alloy steel, stainless steel, grey iron, ductile iron, brass and bronze. Our products are utilized widely in oil, gas, hydraulic, refining chemicals, petrochemicals, pharmaceuticals, food industries, fire-safe systems, marine systems and power stations, etc.