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Din Cast Steel Check Valve Swing Type One Way Metal Seat Non Return Valves H44
Description:
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
Standards
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 |
Features:
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.
Descriptions:
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 |
(Mpa) | |||
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 |