Part 1 ball valve: what is it & how does it work?
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 »