0020009864 Pressure Reduction Valve

Vaillant 0020009864 Pressure Reduction Valve

This part is suitable for:

Vaillant VIH GB 125 S (2005-2010)
and Vaillant VIH GB 155 S (2005-2010)
with Vaillant VIH GB 180 S (2005-2010)
plus Vaillant VIH GB 210 S (2005-2010)
fits Vaillant VIH GB 260 S (2005-2010)
and Vaillant VIH GB 310 S (2005-2010)
with Vaillant VIH S 200 S (2005-2010)
plus Vaillant VIH S 250 S (2005-2010)
fits Vaillant VIH S 300 S (2005-2010)

The pressure relief valve helps to control pressure build up within a heating system.

0It is set to release water if the pressure is too high to stop pressure building up and breaking the system.