Home / CoverUp Key Tips, Tip Sets and Accessories / Fire Hydrant Valve Key – 011HYDFire Hydrant Valve Key – 011HYD Request a Quote Home / CoverUp Key Tips, Tip Sets and Accessories / Fire Hydrant Valve Key – 011HYDFire Hydrant Valve Key – 011HYD Request a Quote The stop tap valve key, designed specifically for use with the CoverUp Key’s slide hammer action to prevent the key getting stuck on valves. Dimensions (L x D) - 200 x 20mm Head Size - 50mm x 50mm Tapered Square Weight - 0.5kg Material - Cast Steel Class - Heavy Duty