Non-return
valve (NRV)
14
1
Isolate the hot and cold water supplies before
the shower valve. Unscrew and remove the
hose/pipe connected to the flow valve outlet.
Unscrew the three set screws from the valve
backplate.
2
Support the thermostatic valve. Unscrew
the two collar nuts in a counterclockwise
direction. This will release the thermostatic
valve from the mounting surface.
3
Unscrew the elbow assemblies from the sides
of the thermostatic valve body.
4
Place a finger into the end of the non-return
valve and pull the non-return valve out of the
valve body.
5
Assemble in reverse order using replacement
non-return valve(s).
REPLACING THE NON-RETURN VALVES
