Product Information: The pressure relief valve helps to control pressure build up within a central heating system. It is set to release water if the pressure is too high to stop pressure building up and breaking the system.
This part is present in 28 different boilers in the Vaillant range including the Vaillant VC 112 E , VCW 221 T , VC 240 XT , VC 180 T , VC 142 E .