I have an extremely odd issue relating to PRVs. I have to have a PRV due to an unvented cylinder setup. The incoming main is 8.5 bar so kind of high. All PRVs I've used have been rated for 16 bar input.
But they keep failing!! The failure mode is extreme vibration - enough to be felt opposite side of the house and a noise that can be heard down the street.
I've tried 5 PRVs now from two different companies. The PRV is on a 22mm pipe.
What can cause a PRV to make such a noise/vibration?
Changing output pressure or input flow makes no difference.
I have an extremely odd issue relating to PRVs. I have to have a PRV due to an unvented cylinder setup. The incoming main is 8.5 bar so kind of high. All PRVs I've used have been rated for 16 bar input.
But they keep failing!! The failure mode is extreme vibration - enough to be felt opposite side of the house and a noise that can be heard down the street.
I've tried 5 PRVs now from two different companies. The PRV is on a 22mm pipe.
What can cause a PRV to make such a noise/vibration?
Changing output pressure or input flow makes no difference.