Good evening - I wonder if anyone can shed some light on this.
Squealing high pitch TRV's when reaching the required shut-off temp.
I understand its probably the pressure in the system making the pin in the TRV vibrate. Or pump turned up too high - which I guess would cause the same effect of raising the pressure.
Firstly I'm in France and have a new french (Frisquet) sealed system running at 1.3-1.4 bar.
The house was plumbed before we bought it by Spanish plumbers. French / Spanish - recipe for disaster. They cant even agree on the size of pipe they use!
So we're in copper 15mm.
The TRV valves are cheap Spanish ones. I would fit Drayton (and have fitted many of them in England with never a sound out of one) if I could find 15mm into half inch rad connectors (the spanish ones of course!)
So should I drain down again and get some more upmarket spanish valves - or get a degree in nuclear physics and turn the pump down a notch - except its a French pump buried within the boiler and seems to have no adjustment via the electrical input panel.
Things were easy in England - vented or pressurised, 15mm with olives. Easy. Here its 15mm 16mm 18mm and multi layer all in the same house - and a variety of different seals, rubber, plastic, long olives and string!
Has anyone had this amount of noise out of a TRV?
Any help much appreciated.
Squealing high pitch TRV's when reaching the required shut-off temp.
I understand its probably the pressure in the system making the pin in the TRV vibrate. Or pump turned up too high - which I guess would cause the same effect of raising the pressure.
Firstly I'm in France and have a new french (Frisquet) sealed system running at 1.3-1.4 bar.
The house was plumbed before we bought it by Spanish plumbers. French / Spanish - recipe for disaster. They cant even agree on the size of pipe they use!
So we're in copper 15mm.
The TRV valves are cheap Spanish ones. I would fit Drayton (and have fitted many of them in England with never a sound out of one) if I could find 15mm into half inch rad connectors (the spanish ones of course!)
So should I drain down again and get some more upmarket spanish valves - or get a degree in nuclear physics and turn the pump down a notch - except its a French pump buried within the boiler and seems to have no adjustment via the electrical input panel.
Things were easy in England - vented or pressurised, 15mm with olives. Easy. Here its 15mm 16mm 18mm and multi layer all in the same house - and a variety of different seals, rubber, plastic, long olives and string!
Has anyone had this amount of noise out of a TRV?
Any help much appreciated.