Thermostatic radiator valve Varioterm angled GW1/2 x GZ1/2 with presetting (angled, GW1/2–GZ1/2)

Varioterm angled thermostatic radiator valve GW1/2 x GZ1/2 with presetting is designed for hydraulic balancing and flow control in central heating systems. The valve connects to radiators with 1/2" male and female threads and provides precise regulation of hot water flow. Built for compatibility with apartment and commercial radiators, it supports system efficiency by enabling preset limits on maximum flow while working with a thermostatic head or manual actuator.

Advantages

The valve provides accurate flow regulation and presetting for reliable hydraulic balancing. Its angled body simplifies installation on radiators with 1/2" connections and reduces strain on piping. Presetting helps limit excessive flow, improving energy distribution across the heating circuit and reducing temperature fluctuations. The construction is suitable for integration with standard thermostatic heads and common heating system components.

Suitable for (tasks / use cases)

• Hydraulic balancing of central heating systems in residential buildings
• Flow regulation on apartment radiators with 1/2" threaded connections
• Installation on commercial or public building radiators requiring presetting
• Retrofit projects where angled connection simplifies piping alignment

Key specifications

• Connection type: angled connection for 1/2" male to 1/2" female radiator threads
• Functionality: flow regulation with adjustable presetting to limit maximum flow
• Application: designed for hot-water central heating radiators in residential and commercial systems
• Compatibility: intended for use with thermostatic heads or manual actuators
• Installation orientation: angled body suitable for horizontal and vertical piping configurations commonly found at radiator inlets

How to use

Install the angled valve between the radiator inlet and the supply pipe using the 1/2" threaded connections, ensuring thread sealing and correct orientation of the angled body. Fit a compatible thermostatic head or actuator onto the valve spindle if automatic temperature control is required. Adjust the presetting to the desired flow limit according to the hydraulic balancing plan, and then fine-tune the thermostatic head or actuator for room temperature control.

Usage recommendations

Before finalizing presetting values, perform hydraulic balancing of the heating circuit to determine correct flow settings for each radiator. Use appropriate sealing materials on threads and follow local installation codes. When replacing an existing valve, verify compatibility with the radiator connections and allow the system to be depressurized and cooled before removal.