DIN Swing Check Valve
STANDARDS
Design and Manufacture: DIN EN13709
Butt-welding Ends:DIN EN 12627
Inspectand Test:DIN EN12266
FacetoFace:DIN EN558-1
RF flanged Ends: DIN EN1092-1
| No. | Parts Name | Carbon Steel | Stainless Steel | |
| 1 | Body | DIN 17245 GS-C25/1.0619 | DIN 17445 1.4308 | DIN 174451.4408 |
| 2 | Seat ring | +13Cr/STL | +304/STL | +316/STL |
| 3 | Disc | A105+13Cr | A182F304+304 | A182 F316+316 |
| 4 | Nut Disc | A194 2H | A1948 | A1948M |
| 5 | Hinge | DIN 17245 GS-C25/1.0619 | DIN174451.4308 | DIN17445 1.4408 |
| 6 | Pin | A276420 | A276 304 | A276316 |
| 7 | Support | DIN 17245 GS-C25/1.0619 | DIN174451.4308 | DIN17445 1.4408 |
| 8 | Nut | A194 2H | A1948 | A194－8M |
| 9 | Bolt | A193 B7 | A193B8 | A193 B8M |
| 10 | Bott | A193 B7 | A193B8 | A193 B8M |
| 11 | Gasket | SS+Graphite | 304+Graphite | 316+Graphite |
| 12 | Bonnet | DIN 17245GS-C25/1.0619 | DIN 174451.4308 | DIN 174451.4408 |
| 13 | Pack Ring | A276 420 | A276 304 | A276-316 |
| 14 | Eyebolt | Steel | Stainless steel | |
Body and Bonnet Connection
The body and bonnet of PN16-PN160 check valves are usually with studs and nuts.And the body and bonnet of PN160 check valves are usually of pressurized seal design
Gasket
Stainless steel + flexible graphite wounded gasketis used for PN16-PN160 check valve; Ringjoint gasket is used for PN160 checkvalve;
Seat
The sealing surface of the seatis spray welded with hard alloy specified by the customer. For stainless steel check valve, integral seat is usually adopted,or to weld hard alloy directlyintegrally. request about Ihe seat, please kindly advise before placing the order.
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