Check Valve

Cast Steel Swing Check Valve, DESCRIPTION: ZENO supplies Cast Steel Swing Check Valves. Our swing check valves cover a wide range of material specification including carbon steel, stainless steel, alloy and cast iron, etc. Specification of Cast Steel Swing Check Valves: 1. Brief Introduction: The prime functin of a check valve is to protect mechanical equipment in a piping system by preventing reversal of flow by the fluid which means the check valve is an automatic valve with forward flow and close againgst reverse flow. The closure member of swing check valve swings about a hinge, which is which is mounted outside the seat. 2. Material Specification: Body & Cover: WCB, LCB, WC1, WC6, WC9, C5, C12, CF3, CF3M, CF8, CF8M, Aluminium Bronze. Seat Ring: A105, LF2, F304(L), F316(L), F51, Hinge & Disc: WCB, LCB, WC1, WC6, WC9, C5, C12, CF3, CF3M, CF8, CF8M, Aluminium Bronze Hinge Pin: F6, F304(L), F316(L), Aluminium Bronze Bolts & Nuts: B7/2H, B8M/8M 3. Size Range and Pressure Ratings: 2" ~ 24" (DN50 ~ DN600); 150LB ~ 2500LB 4. Standards: API 6D, BS1868, ASME B16.34, ASME B16.5, ASME B16.25, ASME B16.10, MSS SP25

Wafer-Check Valve, DESCRIPTION: ZENO supplies Wafer Check Valves. Our wafer check valve series cover a wide range of material specification includingcast iron, ductile iron, carbon steel, stainless steel and aluminium bronze. Specification of Wafer Check Valves: 1. Brief Introduction: The wafer check valve, also known as "Dual Plate Check Valve", have two spring loaded half-moon shaped discs that rotate about their shaft. The disc plates are kept shut by a torsion spring. When fluid flows in a forward direction, the pressure of the fluid causes the disc plates to swing open, allowing medium flow through the passage. The check valve is closed by the spring as soon as the flow ceases, before any reversal of flow can occur. 2. Material Specification: Body & Disc: WCB, LCB, CF8, CF3, CF8M, CF3M, Aluminium Bronze Pin: F6a, F22, F304(L), F316(L), F321 Spring: AISI 9260, 6150; SS304(L), SS316(L), SS321 3. Size Range & Pressure Ratings: 2" ~ 24" (DN50 ~ DN600); 150LB ~ 900LB 4. Standards: API 6D, API 594, ASME B16.34, ASME B16.5, ASME B16.25, ASME B16.10, MSS SP25