Dual Plate Wafer Type Check Valve
Description
The dual plate wafer check valve operates automatically when fluid flows in the forward direction, with the plates opening under pressure. When flow stops or reverses, the springs quickly push the plates closed, providing a tight seal that protects pumps, compressors, and upstream equipment.
Manufactured from cast iron, stainless steel, or carbon steel, this valve is corrosion-resistant and built for long service life. The wafer-style body allows for installation between standard flanges, making it easy to integrate into existing systems without major modifications.
Thanks to its lightweight and low-profile design, the dual plate wafer check valve is often used in HVAC, water treatment, petrochemical, and marine applications. It meets international standards such as API 594 and EN 12334 and is pressure-tested before delivery.
Whether you’re designing a new system or replacing older, bulky swing check valves, the dual plate wafer check valve offers superior performance in a compact form factor.
Specifications:
|
Nominal pressue (MPa) |
1.0 |
1.6 |
|
|
Nominal diameter(mm) |
50-800 |
50-800 |
|
|
Test pressure |
Shell |
1.5 |
2.4 |
|
(MPa) |
Seal |
1.1 |
1.76 |
|
Applicable temperature |
150 |
||
|
Applicable medium |
Fresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Oils, Acids, |
||
|
Operating mode |
manual, worm gear, pneumatic, electric, etc. |
||

Standards:
|
Design & Manufacture |
Flange Connection |
Face to Face Dimension |
Test & Inspection |
|
API 594 |
DIN PN10/16/25 |
API594 |
API 598 |
Material:
|
body |
Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel |
|
Plate |
Ductile Iron, Carbon Steel, Stainless Steel |
|
Spring |
Stainless Steel |
|
Hinge Pin |
Stainless Steel |
|
Plug |
carbon steel |
|
Body Bearing |
PTFE |
|
Spring Bearing |
PTFE |
|
Stop Pin |
Stainless Steel |
|
Eye Bolt |
Carbon Steel |
|
Body Seat |
NBR, EPDM, Viton, Neoprene |
Dimensions:(mm)
|
SIZE (in) |
DN |
B |
E |
DIN PN10/16 |
ANSI 150 |
JIS 10K |
|
2 |
50 |
43 |
66 |
107 |
102 |
101 |
|
2-1/2 |
65 |
46 |
86 |
127 |
121 |
121 |
|
3 |
80 |
64 |
95 |
142 |
133 |
131 |
|
4 |
100 |
64 |
118 |
162 |
171 |
156 |
|
5 |
125 |
70 |
146 |
192 |
193 |
187 |
|
6 |
150 |
76 |
174 |
218 |
219 |
217 |
|
8 |
200 |
89 |
225 |
273 |
276 |
267 |
|
10 |
250 |
114 |
266 |
328 |
336 |
330 |
|
12 |
300 |
114 |
311 |
378/382 |
406 |
375 |
|
14 |
350 |
127 |
361 |
438/442 |
448 |
420 |
|
16 |
400 |
140 |
411 |
488/495 |
511 |
483 |
|
18 |
450 |
152 |
451 |
538/555 |
546 |
538 |
|
20 |
500 |
152 |
506 |
592/617 |
603 |
593 |
|
24 |
600 |
178 |
625 |
695/734 |
714 |
697 |
|
28 |
700 |
229 |
721 |
809 |
828 |
807 |
|
32 |
800 |
241 |
826 |
916 |
936 |
917 |

More Details:







Tianjin Guoji Valve Co., Ltd. is an export-oriented valve manufacturer with 15,332 square meter factory area, which has strong capability of R&D, Manufacture, Trading and Service. Now our company has passed the Lloyd's Register (LR) ISO9001: 2015 quality management system certification (ISO Approval number: ISO 9001 – 00033059) and CE/PED certification (EU Certificate Of Conformity). (Certificate No: 0343/PED/SHA/BJG00001668/A).
TGV's products covered Butterfly valves, Check valves, Strainers, Gate valves, Ball valves, Globe valves, Expansion joints, Flanges and Fittings with pressure range from 0.5 to 6.4 MPa, size from DN15 to DN3000. The products also have been widely exported to more than 30 countries and regions.
We aim at deliver only quality valves with professional services, we see quality and service as life and always take our reputation and promises seriously.




















