Wafer Type Butterfly Valves
PTFE-Sealed Wafer Butterfly Valve
PTFE-sealed wafer butterfly valve; cast iron body, AISI 316 stainless steel disc and PTFE sealing elements, installed between two pipe flanges and tightened with studs – a wafer type butterfly valve. Since PTFE is resistant to virtually all chemicals, it is preferred in acid, alkali, solvent and sanitary lines where elastomer seals are unsuitable.
Used at PN10 operating pressure, PN16 flange connection and temperatures up to +110 °C. Available in DN50–DN300. Fully PTFE-sealed models with disc also PTFE-coated are additionally available for the most aggressive fluids. Manufactured to TS EN 593 standard.
DN50–DN300Nominal diameter
PN10Operating pressure
+110 °CMax. temperature
PTFETeflon seal
Advantages
- Wide chemical-resistant PTFE seal
- AISI 316 stainless steel disc
- Full PTFE option (PTFE-coated disc)
- Short installation length, light and economical wafer body
- Top flange suitable for actuator mounting
Applications
- Chemical and petrochemical lines
- Food and beverage processes
- Solvent and acid lines
- Pharmaceutical and cosmetic manufacturing
Technical Specifications
| Nominal diameter | DN50 – DN300 |
|---|---|
| Operating pressure | PN10 |
| Flange pressure class | PN16 |
| Max. temperature | +110 °C |
| Connection | Wafer (between two flanges) |
| Standard | TS EN 593 |
Materials
| Body | GG-25 pearlite cast iron, epoxy painted |
|---|---|
| Disc | AISI 316 stainless steel (option: PTFE-coated) |
| Shaft | AISI 420 stainless steel |
| Seal | PTFE (teflon) |
Why ORFA?
Since 1985Over 40 years of experience in industrial piping equipment supply.
Technical AdviceSupport in selecting the right valve based on line pressure and size.
Stock DeliveryCommon sizes shipped from warehouse same day.
Spare PartsSeal balls, packing and lever kits and other valve spare parts from a single source.
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