HERZ Cast Iron 2-Way Control Valve (F4035 Series)

The HERZ F4035 Cast Iron 2-Way Control Valve is a heavy-duty, flanged valve designed for accurate control of hot or chilled water in closed HVAC and hydronic systems. Built from robust cast iron and available in PN16 and PN25 pressure ratings, it ensures reliability under demanding conditions.

The valve provides linear flow control, minimal internal leakage per EN 12266-1, and is compatible with HERZ actuators for automated or manual operation. Its flanged EN 1092-2 connections simplify installation in heating, cooling, and industrial circuits. Engineered for efficiency and long service life, the F4035 offers stable flow performance and dependable sealing for large-scale systems.

  • 🔹 Body: Cast iron (EN-GJL)
  • 🔹 Connection: Flanged (EN 1092-2)
  • 🔹 Pressure Rating: PN16 / PN25
  • 🔹 Sizes: DN15–DN200
  • 🔹 Control Type: 2-way, linear characteristic
  • 🔹 Leakage Class: EN 12266-1 compliant
  • 🔹 Medium: Water, water-glycol mixtures
  • 🔹 Temperature Range: For hot and cold water circuits
  • 🔹 Actuation: Compatible with HERZ electric or thermal actuators
  • 🔹 Mounting: Horizontal or vertical (stem up recommended)
  • 🔹 Reliable operation in high-pressure HVAC systems.
  • 🔹 Accurate, linear control for optimized performance.
  • 🔹 Long service life with corrosion-resistant material.
  • 🔹 Leak-tight design minimizes energy loss.
  • 🔹 Easy installation and automation integration.
  • 🔹 Central heating and cooling systems.
  • 🔹 District energy and industrial water circuits.
  • 🔹 Injection and throttle control circuits.
  • 🔹 Building management and automation systems.
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