Threaded Swing Check Valve
A threaded swing check valve is a check valve with threaded connection in which a disc suspended by a hinge inside the body opens with flow and closes under its own weight and back pressure on reverse flow. Because the disc allows full flow passage, pressure drop is very low; it operates safely in low-pressure lines and those carrying dirty water.
Brass models are available for domestic and building plumbing; AISI 304 or AISI 316 stainless steel body models are supplied for chemical, food and steam lines. Offered in sizes from 1/2″ to 4″, pressure class PN16; stainless models operate between -25 °C and +180 °C. Used on horizontal lines or vertical lines with flow upwards.
Benefits
- Very low pressure drop with fully opening disc
- Brass and AISI 304/316 stainless options
- Low risk of jamming in dirty and particulate water
- Simple, maintenance-free design
Applications
- Domestic plumbing and mains water lines
- Pump discharge outlets
- Heating and cooling lines
- Chemical and food lines (stainless)
Technical Specifications
| Nominal sizes | 1/2″ – 4″ (DN15 – DN100) |
|---|---|
| Pressure class | PN16 (PN25 option in brass models) |
| Operating temperature | -25 °C … +180 °C (stainless) |
| Connection | Threaded (BSP) |
| Installation | Horizontal or vertical with flow upwards |
Materials
| Body and cap | Brass or AISI 304 / 316 stainless steel |
|---|---|
| Disc | Brass / stainless steel |
| Sealing | Metal-seated or elastomer (depending on model) |
Why ORFA?
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