DIN Swing Check Valve 

A swing check valve or tilting disc check valve is 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. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. The flapper valve in a flush-toilet mechanism is an example of this type of valve. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank drains and the flapper falls due to gravity. Another variation of this mechanism is the clapper valve, used in applications such firefighting and fire life safety systems. A hinged gate only remains open in the inflowing direction. The clapper valve often also has a spring that keeps the gate shut when there is no forward pressure.

Production Standards:
Design: DIN 3356
Face to face: DIN 3202 F1
Connection Ends: DIN 2543, DIN 2544, DIN 2545
Inspecting/Testing: DIN 3230

Design Description:
Bolted Bonnet Cap
Pressure Seal Bonnet
Swing Type, Anti-rotation Disc
Renewable Seat Rings
Non-penetrate Disc Shaft
Horizontal Servece
Size:  DN50-DN1200
Pressure: PN6-PN420
Connection: Flanges,RTJ Flange,Butt Weld,Groove
Material:
Carbon Steel, Forged Steel, Stainless Steel
GS-C25,LCB,LCC,LC1,CF8,CF8M,CF3,CF3M,WC6,WC9, C5,C12,C12A
Specifical Material:
Duplex Steel, Super Duplex Steel, Inconel
GR4A, GR6A, CY-40, Inconel 600

Check Valve Feature:
Bolted Bonnet Cap
Pressure Seal Bonnet
Swing Type, Anti-rotation Disc
Renewable Seat Rings
Non-penetrate Disc Shaft
Horizontal Servece
Size:  DN50-DN1200
Pressure: PN6-PN420
Connection: Flanges,RTJ Flange,Butt Weld,Groove
Material:
Carbon Steel, Forged Steel, Stainless Steel
GS-C25,LCB,LCC,LC1,CF8,CF8M,CF3,CF3M,WC6,WC9, C5,C12,C12A
Specifical Material:
Duplex Steel, Super Duplex Steel, Inconel
GR4A, GR6A, CY-40, Inconel 600