2-way zone valve FERRO ZST 1/2" (ZST201) for heating systems

FERRO ZST 1/2" (ZST201) is a 2-way zone valve designed for heating systems to provide reliable on/off control of fluid flow in a 1/2" pipe connection. Intended for zoned heating circuits, this valve enables isolation and control of individual heating zones and is suitable for integration with electric actuators and building controllers in domestic and light-commercial central heating installations.

Advantages

The valve features a compact construction compatible with standard 1/2" piping, allowing straightforward replacement or installation in existing systems. Its two-way design ensures clear open/close operation for individual zones, reducing unnecessary circulation and improving control precision. The valve body is made from materials chosen for resistance to typical heating system fluids and temperatures, supporting long service life and low maintenance when used under recommended conditions.

Suitable for

• Individual room or zone control in central heating systems
• Zoned radiators and underfloor heating circuits
• Integration with electric actuators and zone controllers
• Domestic and small commercial boiler systems

Key specifications

• Valve type: 2-way on/off zone valve
• Connection size: 1/2" (female thread compatible with standard fittings)
• Function: isolation and control of flow in a single heating zone
• Medium: water and typical heating fluids
• Installation orientation: in-line with pipework; suitable for horizontal or vertical mounting per installer guidance

How to use

Install the valve in the heating circuit at the location designated for zone isolation or control, ensuring correct pipe connection and sealing. Connect the valve to the actuator or controller according to the actuator wiring and mounting instructions; the valve itself provides a mechanical on/off function while timing and logic are handled by the controller. After installation, pressure-test the system and check for leaks, then commission the zone by operating the actuator to verify full open and closed positions and correct response within the control system.

Usage recommendations

Use with compatible electric actuators and controllers recommended for 2-way zone valves. Follow local plumbing and heating standards during installation, maintain system water quality to prevent deposits, and perform periodic inspections for leakage and proper operation to ensure reliable long-term performance.