On 2006-08-20 23:01:51 +0100, "Alan Holmes" said:


"Graham" wrote in message ...
What are the advantages and disadvantages of gate valves and full-bore
Ball valves for mains water, and isolating parts of a CH system.

A ball valve is to set the level of water in a header tank, a gate
valve is use to shut off or allow a flow of water.

Two completely different uses.

Alan

Not quite. There is such a thing as a lever ball valve and it is a
good choice instead of a gate valve

Ball type float valves are deprecated technology