Dual plate Flanged Check Valve
Description
The valve body is typically made from ductile iron, cast steel, or stainless steel, and can be paired with EPDM, NBR, or metal seats depending on the media and operating temperature. Its corrosion-resistant coating ensures durability in harsh environments, including marine, chemical, and industrial applications.
Designed with flanged ends conforming to DIN, ANSI, or JIS standards, the double plate flange check valve allows for secure mounting between pipeline flanges and is easy to remove for inspection or replacement. The compact construction saves space, while the non-slam closing action minimizes water hammer and vibration within the pipeline.
This valve supports both horizontal and vertical (upward flow) installations, offering flexibility across a wide range of engineering systems. It is available in pressure classes from PN10 to PN40 and sizes ranging from DN50 to DN600 or more, meeting international standards such as API 594 .
As a trusted valve manufacturer in China, we offer high-quality double plate flange check valves backed by stringent quality control and factory testing. Custom coatings, materials, and pressure ratings are available to match your specific project requirements. Choose our Double Plate Flange Check Valve for a compact, low-maintenance, and high-performance solution to backflow prevention.
Specifications:
|
Nominal pressue (MPa) |
1.0 |
1.6 |
|
|
Nominal diameter(mm) |
50-1000 |
50-1000 |
|
|
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 |
Standard Materials of Main Parts:
|
ITEM |
PART NAME |
MATERIAL |
|
1 |
STOP PIN |
Ss304 |
|
2 |
HINGLE PIN |
Ss304 |
|
3 |
SPRING |
Ss304 |
|
4 |
PLATE |
DI |
|
5 |
BODY |
CI |
|
6 |
SEAT |
EPDM |
|
7 |
BEARING |
PTFE |
Dimensions:(mm)



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.


















