Product Information: The pressure relief valve helps to decrease pressure build up within a closed system. It is set to vent as pressure increases to prevent a dangerously high pressure build up within the system.
This part is present in 6 different boilers in the Vaillant range including the Vaillant ECOmax 835 E , ECOmax 828/2 E , ECOmax 824/2 E , VUW 246/2-C , VUW 286/2-C .