HERZ CAST IRON WAFER TYPE GEAR OPERATED BUTTERFLY VALVE
The HERZ 4219 ZF Gear Operated Butterfly Valve is a robust flanged-line valve for precise flow regulation and isolation in HVAC and water systems. It uses a worm gear actuator for smooth, controlled operation and is suitable for DN50–DN600 applications.
Built from cast iron (EN-GJL 250) with EPDM sealing and a stainless-steel disc, it provides long-term corrosion resistance and reliable shut-off.
The body is epoxy coated (RAL 5000) for extended durability in closed or open hydronic networks.
- 🔹 Body: Cast iron EN-GJL 250.
- 🔹 Disc: Stainless steel (AISI 304 / 420).
- 🔹 Stem: Stainless steel AISI 420.
- 🔹 Seat: EPDM.
- 🔹 Connection: Wafer type, EN 1092-2.
- 🔹 Pressure Rating: PN16 (DN65–600).
- 🔹 Temperature Range: -20°C to +110°C.
- 🔹 Operation: Gearbox operated.
- 🔹 Torque Range: 80–1035 Nm.
- 🔹 Kv Range: 10,421–27,502 m³/h.
- 🔹 Medium: Water/glycol mixtures up to 50%.
- 🔹 Coating: Electrostatic epoxy, blue.
- 🔹 High torque gearbox for smooth control.
- 🔹 Large flow capacity and low head loss.
- 🔹 Durable cast iron and stainless-steel construction.
- 🔹 Corrosion-resistant coating for long service life.
- 🔹 Compatible with actuators and automation systems.
- 🔹 HVAC and district energy networks.
- 🔹 Industrial and process water systems.
- 🔹 Plantroom installations and pump isolation.
- 🔹 Large pipework control and isolation.
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