Stainless Steel Disc Wafer Butterfly Valve
Stainless steel disc wafer butterfly valve; cast iron (GG-25) or ductile iron (GGG40) body, AISI 316 stainless steel disc and wafer type butterfly valve fitted between two pipe flanges and secured with bolts. The stainless steel disc provides long service life against corrosion in drinking water, process water and mild chemical fluids.
Operates up to +130 °C with EPDM seat; NBR (oil and fuel) or Viton (FKM, chemical) seat can be selected depending on the fluid. Operating pressure is PN16 in the DN25–DN300 range and PN10 in the DN350–DN600 range; flange connection is PN16. Manufactured to TS EN 593 standard. Supplied with lever control in small sizes and with gear operator in large sizes.
Advantages
- AISI 316 stainless steel disc
- Short installation length, lightweight and economical wafer body
- EPDM, NBR and Viton seat options
- Quarter-turn (90°) for rapid open-close operation
- ISO 5211 top flange suitable for actuator mounting
- Compliant with TS EN 593 standard
Applications
- Drinking and utility water lines
- HVAC, heating and cooling water
- Water treatment and pump stations
- Process water and mild chemical lines
- Fire and irrigation lines
Technical Specifications
| Nominal Bore | DN25 – DN600 |
|---|---|
| Working Pressure | PN16 (DN25–DN300); PN10 (DN350–DN600) |
| Flange Pressure Class | PN16 |
| Max. Temperature | +130 °C (EPDM); varies according to seat material |
| Connection | Wafer (between two flanges) |
| Operation | Lever (small sizes), gear operator; actuator-ready |
| Standard | TS EN 593 |
Materials
| Body | GG-25 cast iron or GGG40 ductile iron, epoxy coated |
|---|---|
| Disc | AISI 316 stainless steel |
| Shaft | AISI 420 stainless steel |
| Seat | EPDM (H-EPDM); NBR or Viton (FKM) option |
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