HERZ CAST IRON LUG TYPE GEAR OPERATED BUTTERFLY VALVE
Flanged lug-type cast iron butterfly valve with gear operator for secure end-line and sectional isolation.
HERZ CAST IRON LUG TYPE GEAR OPERATED BUTTERFLY VALVE
The HERZ 4219 AF Lug Type Gear Operated Butterfly Valve is from HERZ Armaturen engineered for reliable shut-off in high-capacity HVAC and water systems. It features threaded lug connections for end-of-line or sectional installation.
The gear-operated mechanism ensures precise control, while the cast iron EN-GJL 250 body, stainless-steel disc, and EPDM seat deliver durability and tight sealing.
It complies with EN 1092-2 flange standards and is epoxy coated for corrosion protection.
- 🔹 Body: Cast iron EN-GJL 250 (EN 1561).
- 🔹 Disc: Stainless steel (AISI 304 / 420).
- 🔹 Stem: Stainless steel.
- 🔹 Seat: EPDM (ISO 1691).
- 🔹 Connection: Lug type, EN 1092-2.
- 🔹 Operation: Worm gearbox.
- 🔹 Pressure Rating: PN16.
- 🔹 Temperature Range: -20°C to +110°C.
- 🔹 Sizes: DN65–DN600.
- 🔹 Kv Range: Up to 27,502 m³/h.
- 🔹 Coating: Blue epoxy (RAL 5000).
- 🔹 Lug-type body suitable for end-of-line service.
- 🔹 Gearbox ensures easy manual operation.
- 🔹 High durability under pressure and temperature variations.
- 🔹 Low torque requirement for large diameters.
- 🔹 Compatible with flanged pipelines (PN10/16).
- 🔹 District cooling/heating and HVAC mains.
- 🔹 Industrial process pipelines.
- 🔹 Pump isolation and section shut-off points.
- 🔹 Water distribution and treatment systems.
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