HERZ BRONZE SWING CHECK VALVE
Compact bronze swing check valve for HVAC, chilled water, and domestic systems
HERZ CAST IRON WAFER TYPE GEAR OPERATED BUTTERFLY VALVE
The HERZ 4219 ZF Gear Operated Butterfly Valve from HERZ Armaturen 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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