Model VDP - 3 Way Pressurestatic Shunt Valves Brochure

VDP valves are used in domestic boilers with heat exchangers for instantaneous domestic hot water production. When the user requests domestic hot water, the VDP valve shunts the flow of water from the primary circuit of the boiler towards the instantaneneous heat exchanger (boiler) excluding the heating circuit; this shunted flow is modulated depending on the domestic hot water flow rate until it reaches the rate where the microswitch trips.