Flanged Piston Valves
Flanged Piston Valve
A flanged piston valve is a flanged valve that cuts off flow by moving a stainless steel piston between two graphite sealing rings. Because the rings provide both seat and stem sealing, there are no scale leaks common in steam lines; the valve operates without leakage whether it remains closed or open for extended periods.
Supplied with GGG40 ductile iron body, 1.4104 stainless steel piston and AISI 304 reinforced graphite rings in sizes DN15 to DN200, pressure class PN16, temperature range −10 °C to +300 °C and EN 1092-1 flanged. Higher pressures are available in PN40 and cast/forged steel PN63 options.
DN15–DN200Nominal diameter
PN16–PN63Pressure class
+300 °CMax. temperature (PN16)
Graphite ringScale-free
Advantages
- Piston design without scale leakage
- Long service life in steam and thermal oil
- Ring replacement without line removal
- Options from PN16 to PN63
Applications
- Steam and condensate lines
- Hot water and thermal oil lines
- Boiler rooms and steam distribution
- Process lines
Technical Specifications
| Nominal diameter | DN15 – DN200 |
|---|---|
| Pressure class | PN16 (ductile) |
| PN40 / PN63 (steel) | PN40 / PN63 (steel) |
| Working temperature | −10 °C … +300 °C (PN16) |
| Connection | Flanged (EN 1092-1) |
Materials
| Body | GGG40 ductile iron (option: cast/forged steel) |
|---|---|
| Piston | 1.4104 stainless steel |
| Sealing rings | AISI 304 reinforced graphite |
Why ORFA?
Since 1985Over 40 years of experience in industrial plumbing equipment supply.
Technical ConsultationSupport in selecting the correct valve by line pressure and size.
Ex-Stock DeliveryCommon sizes shipped from warehouse the same day.
Spare PartsBall seal, scale trap and lever kits plus other valve spare parts from one source.
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