Body & Connections
- Cast-iron valve body manufactured from EN-GJL material.
- Flanged connections according to EN 1092-2.
- Available in nominal sizes from DN15 to DN200.
Two-Port Flanged Control Valve
HERZ F4035 Two-Port Flanged Control Valve
Cast Iron PN16 / PN25 Linear Control Valve
HERZ F4035 Two-Port Flanged Control Valve from HERZ Armaturen is a heavy-duty cast-iron valve designed for accurate control of hot or chilled water in closed HVAC and hydronic systems. Available in PN16 and PN25 pressure ratings, it features flanged EN 1092-2 connections, linear control characteristics, and compatibility with HERZ electric or thermal actuators.
Manufactured by
HERZ Armaturen
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HERZ F4035 Two-Port Flanged Control Valve
Review the confirmed product information, including description, features, benefits, and applications.
The HERZ F4035 Cast Iron 2-Way Control Valve from HERZ Armaturen 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 with PN16 and PN25 pressure ratings, the valve supports reliable operation under demanding system conditions.
The valve provides linear flow control and minimal internal leakage according to EN 12266-1. Its flanged EN 1092-2 connections support installation in heating, cooling, and industrial water circuits.
The F4035 is compatible with HERZ electric or thermal actuators for automated control. Its stable flow characteristic, dependable sealing, and wide size range make it suitable for large HVAC and hydronic installations.
Pressure & Control
- Available with PN16 and PN25 pressure ratings.
- Two-way valve design with a linear control characteristic.
- Internal leakage performance according to EN 12266-1.
Media & Operating Conditions
- Suitable for water and water-glycol mixtures.
- Designed for hot-water and cold-water circuits.
- Suitable for closed HVAC and hydronic systems.
Actuation & Mounting
- Compatible with HERZ electric actuators.
- Compatible with HERZ thermal actuators.
- Can be installed horizontally or vertically.
- Stem-up mounting position is recommended.
Reliable Operation
The heavy-duty flanged design supports reliable operation in high-pressure HVAC and hydronic systems.
Accurate Linear Control
The linear valve characteristic supports stable and accurate regulation of heating and cooling water flow.
Long Service Life
Robust cast-iron construction supports extended service life under demanding operating conditions.
Dependable Sealing
The leak-resistant valve design helps minimize unwanted water flow and associated system energy loss.
Installation Flexibility
Standard flanged connections and horizontal or vertical mounting options support flexible system installation.
Automation Integration
Compatibility with HERZ electric and thermal actuators supports integration into automated HVAC control systems.
The HERZ F4035 Two-Port Flanged Control Valve is designed for large closed-loop water systems requiring accurate flow regulation, robust flanged construction, and actuator-based control.
Central Heating & Cooling
Central heating and cooling systems using hot-water or chilled-water distribution circuits.
District Energy Systems
District heating and cooling networks requiring dependable control of large water volumes.
Industrial Water Circuits
Industrial water circuits requiring flanged connections and robust valve construction.
Injection & Throttle Circuits
Injection and throttle-control circuits requiring accurate linear regulation.
Management & Control Systems
Building management and automation systems using compatible HERZ electric or thermal actuators.
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