Hi,
I have an unvented system and in the cupboard where the hot water cylinder is there is a mains pressure cold water feed, this goes through a 3bar cold water control valve / 6bar PRV combo before going into the hot water cylinder (see pic 1 & 2).
The relief side of the PRV is dripping (almost a steady stream) into the tun dish at the back bottom corner.
I had this same issue in August and replaced the PRV for a new one and it solved the issue. However, it is back.
The PRV shouldn't fail in 4 months should it?
Could there be another underlying problem in that the PRV is actually working correctly and that it is relieving high pressure?
The cold water control valve is a 3 bar unit and as such should restrict the downstream pressure to 3 bar correct? Do these control valves ever have reliability issues?
Mains water pressure is approx 5 bar.
Look forward to some advice
T.
I have an unvented system and in the cupboard where the hot water cylinder is there is a mains pressure cold water feed, this goes through a 3bar cold water control valve / 6bar PRV combo before going into the hot water cylinder (see pic 1 & 2).
The relief side of the PRV is dripping (almost a steady stream) into the tun dish at the back bottom corner.
I had this same issue in August and replaced the PRV for a new one and it solved the issue. However, it is back.
The PRV shouldn't fail in 4 months should it?
Could there be another underlying problem in that the PRV is actually working correctly and that it is relieving high pressure?
The cold water control valve is a 3 bar unit and as such should restrict the downstream pressure to 3 bar correct? Do these control valves ever have reliability issues?
Mains water pressure is approx 5 bar.
Look forward to some advice
T.