Isolation valves are used either to isolate systems when work
needs to be
out on them, or as service valves for individual products. Isolating
valves should always be used with products that require maintenance
work such as thermostatic mixing valves and thermostatic showers and
pressure reducing valves. It is also a good idea to fit them when
installing bathroom suites. This will enable the changing of
washers, cistern valves and other repairs to go ahead with the
minimum of delay. They can also be used to isolate the water
supply immediately should a leak occur.
The products are either nickel-plated or brass.