Din Cast Steel Swing Check Valve , Metal Seat Non Return Valve Swing Type

Din Cast Steel Check Valve Swing Type One Way Metal Seat Non Return Valves H44



Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, or inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal.


Quick Details:

1. Type: Din Swing Check Valve
2. Bonnet Type:

Bolted Bonnet / Pressure Seal Bonnet

3. Disc Type: Swing Disc
4. Size Range: Dn15 - Dn600
5. Pressure Ratings: Pn16 - Pn100
6. End Connections: Flanged (RF, RTJ), Butt welding (BW).
7. Materials: Cast Steel in GS-C25, 1.4308, 1.4408, WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, 4A, 5A or Equivalent,

8. Various trim materials available to suit service conditions
9. NACE MR 0175




Design & Manufacture DIN 3840
Face to Face Dimension DIN 3202
Flange Ends Dimension DIN 2543, DIN 2544, DIN 2545, DIN 2546, DIN 2548, BS EN 1092-1
Test & Inspection DIN 3230



1. Generally

Bolted Bonnet; Swing and Lift Disc; Metallic Seating Surfaces


2. Body and Bonnet Connection

Bolted bonnet


3. Cover Gasket Style

Stainless steel + flexible graphite wounded gasket

Metal gasket

Metal ring gasket

Pressure seal bonnet


4. Seat

For carbon steel check valve, the seat is usually forged steel. The seat sealing surface may be spray-welded with hard alloy if specified by the customer. For Stainless steel check valve, integrai seat is usually adopted, or it can be machined integrally after hard alloy welded. The threaded or welded type seat is also optional for stain less steel check valve if being requested by the customer.


Din Swing Check Valve Drawing


1. Din Swing Check Valve Parts and Material List:


Part Name Material
CS/ Trim 1 CS/ Trim 8 CS/ Trim 5 Stainless Steel
1 Body DIN 17245 GS-25 + CR13 DIN 17245 GS-C25 + STL DIN 17245 GS-C25 + STL DIN 17445 1.4308 DIN 17445 1.4408
2 Disc DIN 17245 GS-C25 + CR13 DIN 17245 GS-C25 + CR13 DIN 17245 GS-C25 + STL DIN 17445 1.4308 DIN 17445 1.4408
3 Arm DIN 17245 GS-C25 DIN 17245 GS-C25 DIN 17245 GS-C25 DIN 17445 L4308 DIN 17445 1.4408
4 Nut ASTM A194 2H ASTM A194 2H ASTM A194 2H ASTMA182 F304 ASTMA182F3I6
5 Pin ASTMA182F6a ASTMA182 F6A ASTMA182F6a ASTMA182 F304 ASTMA182F316
6 Nut ASTM A194 2H ASTM A194 2H ASTM A194 2H ASTMA194 8 ASTMA194 8
7 Bolt ASTM A194 B7 ASTM A194 B7 ASTM A194 B7 ASTMA193 B8 ASTMA193 B8
8 Gasket SS Spiral Wound W/graphitc, or SS Spiral Wound W/PTFE, or Reinforced PTFE
9 Cover DIN 17245 GS-C25 DIN 17245 GS-C25 DIN 17245 GS-C25 DIN 17445 1.4308 DIN 17445 1.4408


2. Hydro Test Specificatioins:


Nominal Pressure Shell Test(Mpa) Sealing Test(Mpa) Suitable Medium
1.60 2.40 1.76 Water Oil & Gas
2.50 3.75 2.75
4.00 6.00 4.40
6.40 9.60 7.04
10.00 15.00 11.00
16.00 24.00 17.60


Swing Check Valve

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