I am balancing my central heating radiators. I understand the difference between Lockshield and Wheelhead valves BUT my valve caps are all missing so is there an easy way to identify which is which?
eg Is the radiatir bleed-valve always on the same side of the radiator as the Lockshield valve? or is the Lockshield valve always on the side of the radiator where the pipe ( inlet pipe? ) heats up first, once the system is turned on?
Any advice appreciated.
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