Fire Check Valve
A fire check valve lets water flow in one direction only and stops the line draining back when the pump stops or mains pressure drops. In the dual plate wafer type, two spring-loaded half discs open with the flow and close quickly under spring force when it stops.
The store range includes dual plate wafer models in 2″, 2½”, 3″, 4″, 6″, 8″, 10″ and 12″; the manufacturer catalogue gives 2″–12″ sizes and 175–300 psi pressure classes for check valves. It is clamped between two flanges with bolts.
Main Applications
- Fire pump discharge lines
- Jockey pump outlets
- Mains and tank connection points
- Sprinkler supply risers
- Fire department connection inlets
Technical Data
| Type | Dual plate, spring closing, wafer |
|---|---|
| Size | 2″, 2½”, 3″, 4″, 6″, 8″, 10″, 12″ (product range) |
| Pressure class | 175 psi – 300 psi (manufacturer catalogue) |
| Installation | Between two flanges, with studs |
| Orientation | Horizontal or vertical flow-up (by model) |
| Body | By model |
| Plates and spring | By model |
| Sealing | By model (EPDM common) |
Material Options
| Part | Dual plate wafer check valve |
|---|---|
| Body | By model |
| Plates | By model |
| Spring | Stainless steel (by model) |
| Sealing | By model |
Which material? The catalogue gives sizes and pressure classes for the check valve family but does not list part materials; material data is confirmed for the selected model.
Advantages
Fast Closing
- Spring action reduces water hammer
Short Length
- Wafer body takes little space
Lightweight
- Lighter than a swing check valve
Flexible Installation
- Horizontal and vertical lines
Construction and Design Features
- Thin wafer body fitting between flanges
- Two half plates hinged at the centre
- Stainless spring closing the plates
- Sealing gasket on the seat
Send the line size and flange standard; we will quote the fire check valve with the stud set.
How to Choose?
- Set the sizeChoose the check valve for the pump outlet size.
- Check the pressure classSelect the class that covers the pump shut-off pressure.
- Plan the orientationObserve the flow arrow and vertical installation limits.
- Add the studsAdd the stud and nut set for wafer mounting.
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