Caleffi 10in1 Temperature & Pressure Combi 20mm Low lead

10 in 1 combined group valve for pressure and temperature control in domestic water systems. Consisting of:
-539H series combined unit, cold water circuit
-539H series combined unit, hot water circuit
-adjustable thermostatic mixing valve and advanced thermal performance and anti-scald function
-connection tee complete with check valve
-pressure gauges (optional)