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How to change a damaged thermostatic radiator valve ?

时间:2017-10-10 17:59来源:未知 作者:kevin
  
1. Drain the system
Before you start any work on your central heating system you’ll first need to drain it.
If you have a combi boiler you can do this yourself following the steps below, however if you have a conventional cylinder tank system you’ll need to contact your local heating engineer for assistance.
Usually found at the lowest point in the pipework, connect the hose to the drain cock and secure with the jubilee clip.
Run the hose outside and open the drain cock.
Wait until all the water has left the system before moving on to the next step.
2.  Remove the old thermostatic radiator valve 
Place the dry cloth under the thermostatic radiator valves in order to catch any water left in the system.
While holding the body of the valve with a wrench, use an adjustable spanner to unscrew the cap-nuts and remove the valve from the end of the pipe.
Use the wire wool to clean the area directly surrounding the valve.
3. Remove the old adaptor
To remove the old adaptor, simply unscrew it using an adjustable spanner. Depending on the type of adaptor you have you may find it easier to use a hexagonal radiator spanner.
Use the wire wool to clean the area directly surrounding the adaptor.
4. Fit the new adaptor
 Start by winding the PTFE tape around the threads 4-5 times.
Attach the new adaptor to the end of the radiator and tighten with a spanner.
Slide the valve cap-nut and sealing components over the end of the pipe and attach the new valve. Be careful not to tighten the cap-nut too early.
Use the wrench to align the valve with the adaptor, and then tighten the cap-nut that holds them together.
Make sure you also tighten the cap-nut that holds the valve to the water pipe.
6. Refill the system
Locate the filling loop, usually found underneath your boiler.
Turn the valve and increase it until the pressure gauge reaches 1.5.
7. Bleed the radiators
Releasing trapped air thus allowing hot water to circulate easily, bleeding your radiators is a straightforward process.
8. Refill the system again
Once you’ve removed trapped air from the radiators, go back to the filling loop valve and turn it again, until the pressure gauge returns to 1.5.
Information and other materials on this website are not intended to constitute professional advice and should not be relied upon. Please see our Terms of Use for further details.
 
Kevin 
Email: beizhu07@beizhugroup.com  
Skype: beizhu07@beizhugroup.com      
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