PVC-U Check Valves
A PVC-U check valve is a threaded plastic valve with a rigid PVC body that prevents backflow on chemical and saltwater lines where metal valves corrode. Light weight and compatibility with PVC-U pipe systems make it common in treatment and dosing plants.
Models with ball and spring closing elements are available; ball models are PN16 class. The seal material is chosen as EPDM or FKM for the chemical; pressure rating decreases with temperature.
Main Applications
- Water treatment and reverse osmosis
- Chemical dosing pump lines
- Pool and spa circuits
- Seawater and brine lines
- Laboratory and process lines
Technical Data
| Body | PVC-U |
|---|---|
| Connection | Threaded (solvent socket option by model) |
| Closing element | Ball or spring disc (by model) |
| Pressure class | PN16 (ball model) |
| Seal | EPDM or FKM (by model) |
| Thread size | By model |
| Temperature | By plastic limit (by model) |
Material Options
| Part | PVC-U ball | PVC-U spring |
|---|---|---|
| Body | PVC-U | PVC-U |
| Closing element | Ball | Spring disc |
| Spring | — | By model |
| Seal | EPDM / FKM | EPDM / FKM |
Which material? When selecting a PVC-U check valve, check the chemical resistance table and pressure-temperature curve together; for hot or solvent-bearing media consider another plastic or a metal body.
Advantages
Corrosion Resistant
- Acid, alkali and salt
Lightweight
- Plastic body
PVC System Match
- With plastic pipes
Seal Choice
- EPDM or FKM
Construction and Design Features
- Rigid PVC body
- Ball or spring disc
- Chemical-suited seal
- Threaded ends
Send the medium, temperature and thread size; we will offer the threaded PVC-U check valve with the right seal.
How to Choose?
- Check chemical compatibilityConfirm PVC-U and seal resistance.
- Set the temperatureCheck the pressure-temperature limit.
- Choose the closing typeUse ball type with solids and spring type on vertical lines.
- Write the sizeSet the thread or solvent socket size.
Complementary Products
Why ORFA?
Other Threaded Check Valves
Threaded Swing Check Valves
Threaded swing check valves stop reverse flow with a hinged disc and have threaded ends.
Details →
Threaded Cast Iron Check Valves
Threaded cast iron check valves are check valves with a cast body and threaded ends that prevent reverse flow.
Details →
Threaded Ball Check Valves
Threaded ball check valves stop reverse flow with a ball inside the body and have threaded ends.
Details →
Threaded Horizontal Check Valves
Threaded horizontal check valves prevent reverse flow on horizontal lines and have threaded ends.
Details →
Threaded Spring Check Valves
Threaded spring check valves have a spring-loaded disc that works in any position, with threaded ends.
Details →Our PVC-U Check Valves
ORFA supplies pvc-u 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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