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1/2 INCH RADIATOR AIR VENT VALVE – Replacement directional air vent designed for radiators with a compatible 1/2 inch threaded connection. Ideal for replacing old, damaged or leaking radiator bleed valves. MANUAL RADIATOR BLEED VALVE – Allows trapped air to be manually released from your radiator, helping with radiator maintenance and keeping your heating system operating correctly. KEY OR SCREWDRIVER OPERATION – The manual air vent can be opened using a suitable radiator bleed key or screwdriver, making bleeding your radiator quick and straightforward. HIGH TEMPERATURE & PRESSURE RATING – Suitable for heating applications with a maximum working temperature of 120°C and maximum static pressure of 10 bar. PACK OF 2 WITH BLANKING PLUGS – You receive 2 x 1/2 inch directional radiator air vent bleed valves and 2 x blanking plugs, providing a convenient set for radiator installation, maintenance or replacement. Suitable for all ½" radiators and towel rails.