HERZ Differential Pressure Controller – Cast Iron Body (F 4007 Series)

The HERZ F 4007 DP Controller is a flanged differential pressure regulator designed to stabilize system pressure across heating and cooling networks. Operating without auxiliary power, it maintains constant differential pressure within adjustable ranges.

Built with a robust cast iron body and EPDM components, it ensures precision, reliability, and long service life in demanding hydronic systems.

  • 🔹 Connection Type: Flanged (EN 1092-2).
  • 🔹 Pressure Range: 10–40 kPa, 20–80 kPa, 50–150 kPa.
  • 🔹 Valve Body: EN-GJL-250 cast iron per EN 1561.
  • 🔹 Diaphragm: EPDM reinforced with textile.
  • 🔹 O-Rings: EPDM.
  • 🔹 Spring: EN 10270-1-SH steel.
  • 🔹 Max Operating Pressure: 16 bar.
  • 🔹 Test Pressure: 25 bar.
  • 🔹 Max Differential Pressure: 4 bar.
  • 🔹 Temperature Range: -10°C to +110°C (with antifreeze to -10°C).
  • 🔹 Impulse Pipe: 1500 mm included.
  • 🔹 Sizes: DN 50–DN 200.
  • 🔹 Maintains constant differential pressure in hydronic systems.
  • 🔹 Operates without external power or control signals.
  • 🔹 Improves system stability and flow balance.
  • 🔹 Reduces energy consumption and noise.
  • 🔹 Prevents pressure surges and flow fluctuations.
  • 🔹 Central heating and cooling systems.
  • 🔹 Hydronic balancing in large buildings.
  • 🔹 HVAC zones requiring stable pressure control.
  • 🔹 Industrial and commercial heat exchanger networks.
  • 🔹 Chilled and hot water distribution circuits.
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