Flanged Swing Check Valves
Flanged Swing Check Valve
A flanged swing check valve is a flanged check valve in which a hinged disc suspended inside the body opens as flow rises and closes on its seat when flow reverses. When the disc is fully open, the flow path is unrestricted, resulting in very low pressure loss; it is widely used in large-diameter water and fire-protection lines.
Standard water lines are available with cast iron and ductile iron bodies rated PN16; fire installations feature models rated at 300 PSI working pressure; high-pressure and high-temperature lines are supplied in ASTM A216 WCB carbon steel Class 150 and alloyed steel Class 600 versions. Offered in sizes from DN50 to DN300.
DN50–DN300Nominal diameter
PN16300 PSI / Class options
SwingHinged disc
Low lossFull-opening disc
Advantages
- Low pressure loss with full-opening disc
- 300 PSI option for fire-protection installations
- Cast iron and carbon steel body options
- Economical solution for large diameters
Applications
- Water transmission and pump stations
- Fire-protection systems
- Main heating and cooling lines
- Industrial process lines
Technical Specifications
| Nominal diameter | DN50 – DN300 |
|---|---|
| Pressure class | PN16 |
| fire models 300 PSI | fire models 300 PSI |
| steel models Class 150 / 600 | steel models Class 150 / 600 |
| Connection | Flanged (EN 1092 or ANSI) |
| Installation | Horizontal or vertical with upward flow |
Materials
| Body | Cast iron / ductile iron or ASTM A216 WCB carbon steel |
|---|---|
| Disc | Cast iron / stainless steel |
| Seat | Bronze, stainless steel or Stellite 6 (model-dependent) |
Why ORFA?
Since 1985Over 40 years of experience in industrial piping equipment supply.
Technical AdviceSupport in selecting the correct valve according to line pressure and size.
Stock DeliveryCommon sizes shipped from inventory same day.
Spare PartsDisc seals, packing and lever kits and other valve spare parts from a single source.
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