Onyx 15mm x 1/2 Angled White TRV & Lockshield Twin Pack

The Onyx 15mm x 1/2" Angled White TRV & Lockshield Twin Pack is a straightforward, reliable choice for controlling and balancing radiator heat output. This pack combines an angled thermostatic radiator valve (TRV) with a matching lockshield valve, both finished in clean white to suit modern interiors. The bi-directional valve body and standard 15mm compression connection make installation straightforward for both DIY-minded homeowners and trade professionals, while the lockshield allows the system to be properly balanced for consistent heat output across multiple radiators. TRV + Lockshield Valve Type Angled Orientation 15mm x 1/2" Connection Size White Finish 10 Bar Max Pressure Twin Pack Pack Contents Please Note Technical specifications shown are based on the standard performance figures for angled white TRV and lockshield valve sets of this type and connection size, cross-referenced against comparable certified products. Always confirm the exact specification against the product packaging or manufacturer documentation before installation. Angled Configuration Suits standard radiator pipework layouts where the pipe approaches from below or the side at an angle. Clean White Finish A simple, unobtrusive finish that blends easily into modern bathrooms, kitchens and living spaces. Bi-Directional Valve Body Can be fitted with water flowing in either direction, giving flexibility during installation. Thermostatic Control Automatically adjusts water flow to maintain your chosen room temperature, improving comfort and reducing energy waste. Lockshield Valve Included Allows the system to be balanced properly, ensuring consistent heat output across multiple radiators. Frost Protection Setting A built-in frost protection setting helps prevent freezing in unheated or infrequently used rooms. Valve Details Valve type Thermostatic radiator valve (TRV) with lockshield Orientation Angled Connection size 15mm compression inlet, 1/2" BSP outlet Construction Finish White Material Brass Performance Max. working pressure 10 bar Operating temperature range Approx. 7-28°C (typical for this valve type) Max. flow temperature Approx. 110°C (typical for this valve type) Valve body Bi-directional Pack Contents Contents 1 thermostatic radiator valve, 1 lockshield valve What does 'bi-directional' mean for this valve?A bi-directional valve body can be fitted with water flowing in either direction through the valve, which gives more flexibility when planning pipework layouts during installation. Is the lockshield included, or sold separately?The lockshield valve is included in this twin pack alongside the TRV, so you have both valves needed to fit and balance one radiator. What size pipework does this fit?This valve is designed for standard 15mm compression pipework with a 1/2" BSP radiator connection, which fits the majority of UK central heating radiators. Can this be used on a heat pump system?Standard TRVs like this are generally compatible with heat pump systems, but always check your heat pump manufacturer's guidance on valve compatibility and any minimum flow requirements before installation.