Dual Plate Check Valves
A dual plate check valve is a wafer-type non-return valve in which two half plates hinged on a central pin fold open with the flow and close quickly under spring force when flow stops. It is shorter and lighter than single-disc types.
It is used on pump discharge lines, cooling water and HVAC circuits to save space and weight at large sizes. Body and plate materials and pressure class are selected by model.
Main Applications
- Pump discharge lines
- HVAC and cooling water circuits
- Water distribution and booster lines
- Fire pump outlets
- Large process lines
Technical Data
| Type | Dual plate, wafer |
|---|---|
| Closing | By spring force |
| Connection | Between flanges, with studs |
| Size | By model (group range DN15–DN600) |
| Pressure class | By model (group PN16–PN63) |
| Body and plates | By model |
| Spring | Stainless (by model) |
| Orientation | Horizontal or vertical flow-up (by model) |
Material Options
| Part | Dual plate check valve |
|---|---|
| Body | By model (cast iron, ductile, stainless) |
| Plates | By model |
| Spring | Stainless (by model) |
| Sealing | By model |
Which material? Leave the straight pipe runs stated in the datasheet before and after a dual plate check valve so the plates can open freely; an elbow directly at the pump outlet can strain the plates.
Advantages
Short and Light
- Saves space and weight at large sizes
Fast Closing
- Lower water hammer risk
Low Pressure Loss
- Plates open parallel to flow
Easy Installation
- Clamped between flanges
Construction and Design Features
- Wafer body fitting between flanges
- Two half plates hinged at the centre
- Spring closing the plates
- Centring by studs
Write the DN size, pressure class and medium; we will quote the dual plate check valve with its stud set.
How to Choose?
- Set the sizeWrite the line DN size.
- Select the pressure classPick a PN suited to operating pressure.
- Plan the straight runLeave enough straight pipe from pump and elbows.
- Choose the materialSelect body and plate material by medium.
Complementary Products
Why ORFA?
Other Flanged Check Valves
Disc Check Valves
Disc check valves stop reverse flow with a spring-loaded disc and have a slim body that fits between flanges.
Details →
Flanged Swing Check Valves
Flanged swing check valves stop reverse flow with a hinged disc and have flanged ends.
Details →
Flanged Ball Check Valves
Flanged ball check valves stop reverse flow with a ball inside the body and have flanged ends.
Details →
Lift Check Valves
Lift check valves work with a disc that lifts with the flow and drops back onto its seat on reverse flow.
Details →
PVC-U Wafer Swing Check Valves
PVC-U wafer swing check valves have a rigid PVC body and a hinged disc and fit between flanges.
Details →
Wafer Swing Check Valves
Wafer swing check valves fit between flanges and stop reverse flow with a hinged disc.
Details →Our Dual Plate Check Valves
ORFA supplies dual plate check valves in a range of pressure classes, sizes and connection types to suit your application. Descriptions, technical specifications, materials and dimension tables are available on each detail page.
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