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#.

Products List

Flanged Ends Gate Valve, ASTM A216 WCB, 6IN, CL300, Trim 8
Request a quote


Flanged Ends Gate Valve Manufacturer in China: ASTM A216 WCB Gate Valve, Flanged Ends, 6IN, Trim 8, CL300, Gray Painting Surface Treatment.
ASTM A105 Gate Valve, DN20, PN10, RF, B16.5
Request a quote


China ASTM A105 Gate Valve: ASTM A105 Gate Valve, RF Flanged End Connection, ASME B16.5 Standard, CL150 (PN20), 3/4 inch (DN20), Handwheel Operation.
API 598 Alloy Steel Swing Check Valve, 150LB, DN250
Request a quote


China API 598 Alloy Steel Swing Check Valve: API 598 AS Swing Check Valves, ASTM A217 WC9, Stellite Disc, DN250(10 Inch), 150LB(PN16), Butt Welded.
API 594 Swing Check Valve, 8 Inch, 150LB
Request a quote


China API 594 Swing Check Valve: Carbon Steel, Alloy Steel, Stainless Steel Swing Check Valves, 8 Inch, 150LB, API 594, WCB, C5
Flanged Piston Check Valve, A182 F51 DN80 PN16
Request a quote


China Flanged Piston Check Valve manufacturer Duwa Piping supplies Flanged Piston Check Valve, ASTM A182 F51, DN80 PN16, ASTM A182 F51 & STL Disc & Seat.
Butterfly Check Valve, Wafer Type, Cast Iron Body
Request a quote


China Butterfly Check Valve Manufacturer Duwa Piping Supplies Wafer Type Check Valve, Cast Iron Body Material, Al- Bronze Disc, SS316 Spring, DN350 size and PN10 pressure.
Three Ways Ball Valve, Casting Type, WCB, 2 Inch, CL900
Request a quote


China Three Ways Ball Valve Manufacturer Duwa Piping provides 3 Ways Ball Valve, Casting Type, Size 2 Inch (DN50), Material WCB, Class 900, Siver Grey Surface Treatment.
RTJ Ball Valve, Bolted Bonnet, API 6D, CL1500, F51
Request a quote


China RTJ Ball Valve manufacturer Duwa Piping provides Ring Joint Type Bal Valve, Bottled Bonnet, API 6D standard, pressure CL1500, A182 F51 material.
API 6D Ball Valve, ASTM A182 F316, Fire Safe API 607, 8 Inch, Cl900
Request a quote


API 6D Ball Valve, ASTM A182 F316, Fire Safe API 607, 8 Inch, Cl900