Part 1 and a Part 2 ball valves: what’s the difference? These brass fittings are some of the most common types of ball valves found in British homes. They are typically found in loft cisterns, such as the cold water storage cistern and the feed and expansion cistern. They both work in roughly the same way. As …
Part 1 and Part 2 ball valves: what’s the difference? Read More »
A Part 1 ball valve or Portsmouth ball valve is a ball valve made to British Standard specification 1212, Part 1. It consists of a piston inside a brass housing, with a float arm secured to the valve via a split pin. Inside the piston is a slot which accommodates the end of the float arm, and on …
Part 1 ball valve: what is it & how does it work? Read More »
A ball valve or float valve, or less commonly, a ballcock, is a valve which controls the flow of water into a cistern via a plastic or metal float on the surface of the water. When water is drawn out of the cistern, the float falls with the water level. This opens the valve and causes water to …