Two of my domestic (Bungalow) heating system radiators have strange (well to me at least) valves fitted. I believe that these where fitted when a new boiler was installed about 10 years ago. At the same time all my other radiators had Thermostatic valves fitted.
The valves in question are small body 15mm 90 degree type with a plastic screwed cap which can be un-screwed to reveal a small metal "plunger" which is about 6mm diameter which protrudes about 10mm out from the valve body.
It would appear that screwing the plastic cap onto the body eventually pushes down on the plunger which is then pushed into the valve body.
I can't find any info on this type of valve or what it does.
Any advice much appreciated.
Thanks
The valves in question are small body 15mm 90 degree type with a plastic screwed cap which can be un-screwed to reveal a small metal "plunger" which is about 6mm diameter which protrudes about 10mm out from the valve body.
It would appear that screwing the plastic cap onto the body eventually pushes down on the plunger which is then pushed into the valve body.
I can't find any info on this type of valve or what it does.
Any advice much appreciated.
Thanks