Encyclopaedia

Tank bung

A tank bung is a bung used for blocking a cistern outlet, such as the outlets on a cold water storage cistern. Typically available in 15 mm, 22 mm, and 28 mm sizes, a tank bung consists of a plug made out of rubber, or made out of plastic with rubber edges, which is inserted into a …

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Croydon ball valve

A Croydon ball valve is a ball valve which consists of a piston inside a brass housing, with a float arm secured to the valve via a brass split pin. On the end of the float arm is a plastic or copper float. Inside the valve, the piston carriers a washer, which faces the valve …

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Broken coil

A broken coil refers to a fault in a hot water cylinder in which the coil inside the cylinder is perforated, allowing water from the central heating circuit inside the coil to mix with water in the hot water cylinder. Overview An indirect hot water cylinder contains a coil of pipework which is connected to the …

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