Concentric thermostatic mixer valve
Mains pressurised thermal store systems (
fig.)
Packages of this type, fitted with a tempering
valve (blender valve) can be used. A drop tight
pressure reducing valve MUST be fitted if the
supply pressures exceed 5 bar running.
An expansion vessel MUST be fitted, and
regularly maintained, to ensure, the unit, is
not damaged by excess pressures. This may
already be installed externally or internally within
the thermal store (check with thermal store
manufacturer).
Blender
valve
Flow
Cold mains supply
Hot
water
Stop tap
Expansion
vessel
Pressure
reducing valve
Return
Service
valves
Mixer
Boiler
*(
kits are for illustration purposes only)
*Fig.
*
(diagrammatic view – not to scale)
