Pilot Operated Check Valve Manufacturers – 4A Duples Steel Wafer Lug Through Bolting Check Valve – UNIQUE

Standard compliance

1) Design and manufacture: API6D, API594
2) Test and inspection: API598
3) Face to face dimensions: API594
4) Install between flanges: ANSI B16.5, B16.47 SERIES A & SERIES B, JIS, BS, DIN

Specifications

1) Size: 2″ to 60″
2) Class: 150LB to 2500LB
3) Type: Double plate or single plate, wafer type, lugged type, flanged type
4) Material: WCB, WCC, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, DUPLEX SS, MONEL, ALLOY 20, B148 bronze, Al-bronze, C95400, C95800 etc.

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.