I am replacing my central heating radiator valves. The valves are completely broken and have a pin fitting to turn them on and off so I cannot just turn them off but will actually need to cut them off and start again. I need to know what I will need to do and what materials I'll need to complete the job.
2006-09-27 21:57:32 · 7 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
Don't even think about it if you don't know. You will cause untold problems for yourself and, far from saving money by doing it yourself, end up with a huge bill, not only for the work to replace the valves but also to correct the mess you have made.
I know - I have been there!!
2006-09-27 22:01:20 · answer #1 · answered by Essex Ron 5 · 0⤊ 0⤋
you have todrain the complete system first then undo the nut on the radiator putting plenty of rag under it as the water that comes out usually is black as soot then undo the nut at the bottom of the valve check that the new valve thread is the same as nuts on copper fittings vary you can use pft tape or a good sealing compound like Boss white the rad connection should be ok as these are bsp thread
when you have replaced all the valves top up system tnen bleed the rads starting at the lowest one fist let the air out by the small square valve on the top corner of the rad do this until you reach the top rad run c/heating for a few minutes then bleed all rads again
tools needed spanners to fit rad valve nuts
rad bleed key
jointing tape/bosswhite
2006-09-28 07:39:49 · answer #2 · answered by 808fl 5 · 0⤊ 0⤋
You will need a large adjustable spanner, PTFE tape to wrap around the new threads, and possibly a hexaganol radiator key, (b&q)
Drain down the system before removing valves and support everything so you do not bend anything. Apply PTFE tape to all threads on reassembly to obtain a good seal. When refilling pour a bottle of corrosion inhibitor into the header tank before letting the ball valve rip again. (Again b&q) You will then need to bleed the radiators once you have refilled them. Do this with a bleed key on the little screws located near the top of each radiator. Bleed with the system running but before it is too hot. Release each bleed screw slightly in turn, tightening it again once air stops coming out and water issues instead.
2006-09-28 05:02:58 · answer #3 · answered by Gerard McCarthy 2 · 0⤊ 0⤋
I agree, you don't even want to try this. I've been a hvac contractor for 30 years and I hate these kind of jobs. You didn't mention if you have copper or black iron pipes and with iron breaking loose the threaded fittings is a major challenge,draining and refilling the system, getting them tight enough so there is no leaks, Your best off leaving it to a qualified technician
2006-09-28 09:34:47 · answer #4 · answered by T square 4 · 0⤊ 0⤋
Really this question has been answered, one point though, don't under any circumstances bleed your radiators with the system running, your pump will be full of air and will burn out if you do. Always bleed the radiators before turning your system back on.
2006-09-28 19:11:29 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Get a plumber in.You don't wanna be messing around with your water and heating system.
www.yellowpages.com
2006-09-28 05:06:12 · answer #6 · answered by Danielle 3 · 0⤊ 0⤋
Give ESSEX RON the money Barney.
2006-09-29 06:26:46 · answer #7 · answered by xenon 6 · 0⤊ 0⤋