Flanged Swing Check Valves
A flanged swing check valve is a non-return valve with its own flanged body, in which a single disc swinging on a hinge opens with flow and closes onto its seat under its weight and back pressure on reverse flow. With the disc open, the flow path is largely unobstructed.
It is used on pump discharge lines, water mains, fire and tank connections and large lines where low pressure loss matters. As the body has a bolted cover, some models allow access to internals without removing the valve.
Main Applications
- Pump discharge lines
- Water mains and booster lines
- Fire pump and tank connections
- Cooling water mains
- Water treatment plants (clean water side)
Technical Data
| Type | Swing, single disc |
|---|---|
| Connection | Own flanged body |
| Size | By model (group range DN15–DN600) |
| Pressure class | PN16 and above (by model) |
| Body | By model (cast iron, ductile, cast steel) |
| Disc | By model |
| Cover | Bolted (by model) |
| Orientation | Horizontal or vertical flow-up (by model) |
Material Options
| Part | Flanged swing check valve |
|---|---|
| Body | By model |
| Cover | By model |
| Disc | By model |
| Seat | By model |
Which material? As the swing disc closes by weight it can slam on sudden flow stops; on pump lines with water hammer risk consider a spring-loaded or dual plate type.
Advantages
Low Pressure Loss
- Open disc leaves the flow free
Large Sizes
- Suited to mains
Service Access
- Bolted cover (by model)
Simple Design
- One moving part
Construction and Design Features
- Own flanged cast body
- Single hinged disc
- Bolted cover
- Flow arrow on the body
Write the DN size, PN class and orientation; we will quote the flanged swing check valve with gaskets and bolts.
How to Choose?
- Set size and PNWrite the line size and pressure class.
- Check the orientationInstall flow-up on vertical lines.
- Assess water hammerConsider a spring type for sudden stops.
- Add the flange setAdd gaskets and bolts to the list.
Complementary Products
Why ORFA?
Other Flanged Check Valves
Dual Plate Check Valves
Dual plate check valves stop reverse flow with two spring-loaded plates and fit between flanges.
Details →
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 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 Flanged Swing Check Valves
ORFA supplies flanged swing 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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Our sales team will prepare the best solution for your needs.