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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