The 15mm Drayton TRV4/LS is a premium thermostatic radiator valve expertly engineered for exceptional temperature accuracy and long-term operational durability in domestic central heating circuits. Featuring a versatile bi-directional valve body, this EN215 approved unit simplifies the initial installation process by allowing fluid flow from either direction without risking disruptive water hammer. The ultra-sensitive liquid-filled sensor delivers a rapid 20-minute response time with precise 0.6-degree control accuracy, ensuring highly stable room temperatures while simultaneously minimising household energy waste. Designed to handle robust system conditions, it comfortably accommodates a maximum flow temperature of 110 degrees Celsius and a static pressure of 10 bar.

Recognised globally for its Class 1 efficiency rating, the TRV4 incorporates patented non-stick internal components that actively prevent calcium limescale accumulation, ensuring the operating spindle remains highly functional over years of continuous daily use. The valve is supplied with precision pre-set internals to facilitate straightforward auto-balancing across two-pipe systems, drastically reducing on-site hydraulic commissioning time. Finished in a sleek white and chrome external design, this half-turn operation valve features a highly reliable double gland seal to mitigate all leak risks in modern radiator installations.

Q: What type of temperature sensor is used in this valve?
A: It utilises a highly responsive liquid-filled sensor for precise thermostatic control.

Q: Can the valve be installed on the return pipework?
A: Yes, the bi-directional body allows installation on either the flow or return pipe.

Q: What is the maximum operating temperature for this TRV?
A: The valve is engineered to withstand maximum flow temperatures up to 110 degrees Celsius.

Q: Does the valve protect against scale build-up?
A: It features patented non-stick internals that actively resist limescale accumulation.