The West Faringdon Lever traditional lever style manual radiator valve that comes as complete pairing of one lock-shield valve and a one wheel-head valve. This West design and manufacture their products using the finest methods and materials to ensure a high quality product. Supplied with a 6 year guarantee from the manufacturer. Features and Benefits: Traditional corner thermostatic radiator valve pair Manufactured from high-quality material and is extremely durable for long-term use Solid brass construction Comes in attractive brass finish Compression Inlet(s) 15mm Frost Protection Features Radiator Coupler 1/2" BSPT - Male One wheel-head and one lock-shield Brass valve with a real wood head TRV's are installed on the flow rather than the return pipework of a radiator Used in conjunction with a system automatic bypass valve This thermostatic valve can be installed on either the flow or return in any orientation System automatic bypass valves are a specific building regulation