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+1 to the above ive never had one rise unless faulty, as the pressure in the outgoing pipe is to what the prv is set to, so if its climbs something is wrong
Discuss Mains static pressure off the scale!! in the Plumbing Jobs | The Job-board area at PlumbersForums.net
No the plumber didn't touch it. (Just tweaked a weeping comp joint on it (due to the mega pressure ha!)
It's a caleffi altecnic model prescal 533. I've just found out it only controls the dynamic,not static pressure,and max inlet pressure is 12 bar! So that may be the problem. The altecnic prescal 535 however, controls static AND dynamic (for commercial applications it says?!? And 16 bar max inlet pressure) So maybe i want one of them if my incoming mains is super high n i want static reduction.
That is bizarre! This has been an education.
I hadn't an idea that the 533 valve didn't actually reduce the standing pressure on whatever it supplied. You would think "Pressure Reducing Valve" was exactly that!
I always wondered why they were so cheap and fairly small bodied and now I know! I will avoid them.
Thank goodness I never had to fit one to an unvented unit.
Reply to Mains static pressure off the scale!! in the Plumbing Jobs | The Job-board area at PlumbersForums.net
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