Swing Check Valve by Hydrevo Engineering

A swing valve is a butterfly-style check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. Although swing check valves can come in various sizes, large check valves are often swing check valves.

Standards: Design Standard : BS 1868/API 6D
Inspection & Testing Standard : BS 6755/API 6D
Face To Face : As Per ANSI B 16.10
End Connection : Flanged End To ANSI B 16.5/BS 10 Table
Buttweld End To ANSI B 16.25
Size Range : 1" To 24"
Pressure Rating : 150# To 1500#

Nomenclature: Body / Cover / Hinge : ASTM A 216 GR. WCB
ASTM A 217 GR. WC1/WC6/WC9/WC11
ASTM A 352 GR. LCB/LC3
ASTM A 351 GR. CF 8 /CF 8M/CF 3/CF 3M/CN 7M
IS 210 GR. FG 200/220/250/260
Disc : AISI 410 (13% Cr.) /AISI 304/316/304L/316L/Alloy 20
Seat : AISI 410 (13% Cr.) /AISI 304/316/304L/316L/Alloy 20
Hinge Pin : AISI 410 (13% Cr.) /AISI 304/316/304L/316L/Alloy 20
Gasket : CAF/Grafoil/S.S. Spiral Wound With CAF/Grafoil/P.T.F.E.
Disc Lock Nut : A 194 GR. 2H/S.S. 304/316
Stud & Nut : ASTM A 193 GR. B7/ A 194 GR. 2H/S.S. 304/316

Applications: These types of check valves are commonly used for firefighting and flood prevention in sewage systems.
They’re also designed to work with materials such as gas, liquids, and other types of media.