China
Valve manufacturer, Manufacturer and Supplier, Duwa supplies Industrial Valves, Ball Valves, Butterfly Valves Check Valves, Gate Valves, Globe Valves, Plug Valves, Safety Relief Valves, Strainer, and Other Special Valves in Various Materials and Sizes, used in many industrial market segments.
American Standard:
Ball Valve: API 6D, BS 5351. Wafer Check Valve: API 594. Swing Check Valve: BS 1868.
Butterfly Valve: API 609. Gate Valve: API 600, BS 1414. Globe Valve: BS 1873.
Through Conduit Gate Valve: API 6D. Plug Valve: API 599.
Face to Face Length Dimension: ANSI B16.10 or DIN 3202 or according to the client requirement.
Pressure Test: API 598.
Body / Bonnet Materials:
| Cast Steel | Forged Steel | Materials |
| A216 WCB | A105 | Carbon Steel |
| A352 LCB | A350 LF2 | Low Temperature CS |
| A351 CF8 | A182 F304 | Stainless Steel |
| A351 CF8M | A182 F316 | Stainles Steel |
| A351 CF3 | A182 F304L | Stainless Steel |
| A351 CF3M | A182 Ff316L | Stainless Steel |
| A351 CN7M | | Alloy Steel 20 |
| A217 (WC1 WC6 WC9 C5 C12) | A182 F11/F22 | Alloy Steel |
| ASTM A126 GRB | | Cast Grey Iron |
| ASTM A395 | | Ductile Iron |
| B148 C95800 | | Aluminum Bronze |
Nominal Diameter Range: 1/2" – 48".
Nominal Pressure Range: 150# - 2500#.
