Nickel-Plated Disc Lug Butterfly Valve
Nickel-plated disc lug butterfly valve; with GG-25 grey cast iron body, nickel-plated GGG40 ductile iron disc and threaded lugs that allow separate bolting to flanges (lug type butterfly valve). Nickel plating protects the cast iron disc against corrosion while offering a more economical solution compared to stainless steel disc models.
Operates up to +130 °C with EPDM seat. Works at PN16 pressure in the DN25–DN300 range and PN10 pressure in the DN350–DN600 range; flange connection is PN16. It is the most commonly used butterfly valve type in heating, cooling, air conditioning and general water systems. Manufactured to TS EN 593 standard; more economical PN10 series are also available.
Benefits
- Economical solution with nickel-plated ductile iron disc
- Threaded lugs keep the valve in place even if one side of the line is disconnected; can be used as an end valve
- Operation up to +130 °C with EPDM seat
- Quarter-turn for fast open-close operation
- ISO 5211 top flange suitable for actuator mounting
- Compliant with TS EN 593 standard
Applications
- Heating and district heating lines
- Cooling and air conditioning water lines
- Boiler rooms and heat centres
- General water and plumbing lines
- Irrigation and fire lines
Technical Specifications
| Nominal size | DN25 – DN600 |
|---|---|
| Working pressure | PN16 (DN25–DN300); PN10 (DN350–DN600) |
| Flange pressure class | PN16 |
| Max. temperature | +130 °C |
| Connection | Lug (threaded lug) |
| Actuation | Lever, gearbox; suitable for actuator mounting |
| Standard | TS EN 593 |
Materials
| Body | GG-25 grey cast iron, epoxy painted |
|---|---|
| Disc | GGG40.3 ductile iron, nickel-plated |
| Stem | AISI 420 stainless steel |
| Seat | EPDM (H-EPDM) |
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