HERZ CAST IRON WAFER TYPE LEVER OPERATED BUTTERFLY VALVE

The HERZ 4219 ZF Wafer Type Lever Operated Butterfly Valve is a compact shut-off and control valve for HVAC, chilled, and hot water systems. Made from cast iron (EN-GJL 250) with an EPDM seat and stainless-steel disc, it offers reliable sealing and corrosion resistance.

The lever-operated design allows quick manual operation, while the wafer pattern ensures compatibility between PN10 and PN16 flanges.

Its compact structure and blue epoxy coating make it suitable for building and industrial installations.

  • 🔹 Body: Cast iron (EN-GJL 250 / JL1040, EN 1561).
  • 🔹 Disc: Stainless steel 1.4408 (AISI 316).
  • 🔹 Stem: Stainless steel ASTM A276 Type 316.
  • 🔹 Seat / O-Ring: EPDM (ISO 1691).
  • 🔹 Lever: Steel ST14.03 (DN50–150), S235 (DN200–300).
  • 🔹 Connection: Wafer type, EN 1092-2 (PN10/PN16).
  • 🔹 Pressure Rating: PN16.
  • 🔹 Temperature Range: -20°C to +110°C.
  • 🔹 Medium: Water, 25–50% glycol mixture.
  • 🔹 Sizes: DN50–DN300.
  • 🔹 Coating: Blue epoxy (RAL 5000).
  • 🔹 Torque: 20–350 Nm.
  • 🔹 Compact, lightweight wafer design.
  • 🔹 Reliable sealing and corrosion protection.
  • 🔹 Full compatibility with PN10/PN16 flanges.
  • 🔹 Easy manual operation with locking lever.
  • 🔹 Maintenance-free EPDM seat for long service life.
  • 🔹 HVAC chilled and hot water circuits.
  • 🔹 Building service and hydronic systems.
  • 🔹 Industrial and process water lines.
  • 🔹 District heating and cooling networks.
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