HERZ CAST IRON LUG TYPE GEAR OPERATED BUTTERFLY VALVE
Flanged lug-type cast iron butterfly valve with gear operator for secure end-line and sectional isolation.
HERZ Differential Pressure Controller – Cast Iron Body (F 4007 Series)
The HERZ F 4007 DP Controller from HERZ Armaturen 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.
Other Products From HERZ Armaturen
HERZ CAST IRON DOUBLE REGULATING & COMMISSIONING VALVES
PN25 ductile iron flanged commissioning valve for high-pressure HVAC and process water systems
HERZ CAST IRON DOUBLE REGULATING & COMMISSIONING VALVES
Flanged cast iron double regulating and commissioning valve for hydronic balancing in large HVAC networks
