Stainless Steel Disc Lug Butterfly Valve
Stainless steel disc lug butterfly valve; ductile iron (GG-25) or ductile cast iron (GGG40) body, AISI 316 stainless steel disc and threaded lugs (lug) that connect separately to flanges with bolts. The stainless steel disc provides long service life against corrosion in potable water, process water and light chemical fluids.
Operates to +130 °C with EPDM seat; NBR (oil and fuel) or Viton (FKM, chemical) seals can be selected according to the fluid. DN25–DN300 range rated at PN16; DN350–DN600 range at PN10 working pressure; flange connection is PN16. Manufactured to TS EN 593 standard. Supplied with lever control in smaller sizes and gear-operated control in larger sizes.
Advantages
- AISI 316 stainless steel disc
- Threaded lugs keep the valve in place even if one side of the line is removed; can be used as an end valve
- EPDM, NBR and Viton seat options
- Quarter-turn (90°) for quick open-close
- ISO 5211 top flange suitable for actuator mounting
- Complies with TS EN 593 standard
Application Areas
- Potable and utility water lines
- HVAC, heating and cooling water
- Water treatment and pump stations
- Process water and light chemical lines
- Fire and irrigation lines
Technical Specifications
| Nominal diameter | DN25 – DN600 |
|---|---|
| Working pressure | PN16 (DN25–DN300); PN10 (DN350–DN600) |
| Flange pressure rating | PN16 |
| Max. temperature | +130 °C (EPDM); varies according to seal type |
| Connection | Lug (threaded lug) |
| Operation | Lever (smaller sizes), gear-operated; actuator-ready |
| Standard | TS EN 593 |
Materials
| Body | GG-25 cast iron or GGG40 ductile iron, epoxy painted |
|---|---|
| Disc | AISI 316 stainless steel |
| Stem | AISI 420 stainless steel |
| Seat | EPDM (H-EPDM); NBR or Viton (FKM) option |
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