Thermostatic radiator valve pack FERRO ZTM21 GT20 1/2" angled

FERRO ZTM21 thermostatic radiator valve pack with GT20 angled 1/2" connection provides thermostatic control at the valve inlet for radiator heating circuits. The set is intended for temperature regulation in residential and commercial heating systems where a compact angled connection is required. Components are compatible with standard 1/2" radiator fittings and designed to integrate with common central heating installations.

Advantages

The FERRO ZTM21 GT20 angled valve pack enables automatic temperature control at the radiator, reducing overheating and improving comfort. Its angled 1/2" connection saves space and simplifies installation in confined locations. The components are manufactured to suit standard radiator fittings, offering reliable mechanical compatibility and straightforward replacement of existing angled valves. The thermostatic function allows proportional control of flow based on the sensed temperature, contributing to energy-efficient operation when used with compatible thermostatic heads.

Suitable for

• Domestic radiator temperature control in apartments and houses
• Commercial heating systems with compact installation requirements
• Replacement of existing angled 1/2" radiator valves
• Hydronic systems where thermostatic inlet regulation is preferred

Key specifications

• Connection type: angled
• Thread size: 1/2" compatible with standard radiator fittings
• Control type: thermostatic valve pack for inlet temperature regulation
• Application: radiator heating circuits in residential and commercial buildings
• Compatibility: designed for use with standard thermostatic heads and valves

How to use

Install the FERRO ZTM21 GT20 angled valve pack in place of the existing radiator valve or as part of a new radiator installation, ensuring the angled 1/2" connection aligns with the radiator and pipework. Tighten connections according to plumbing best practices and bleed the radiator after installation to remove trapped air. Attach a compatible thermostatic head to enable automatic temperature regulation; set the desired temperature on the head and allow the valve to modulate flow based on sensed room conditions. Regular inspection and occasional maintenance of connections and moving parts will help sustain reliable operation.

Usage recommendations

Use with compatible thermostatic heads and follow manufacturer guidance for installation torques and sealing methods. For system commissioning, balance radiators and purge air from the system to ensure correct thermostatic performance. In hard water areas or aggressive water chemistry, consider system treatment to reduce potential valve wear.