Mr Fizzion wrote:
I guess this device enables a radiator circuit to be pressurised with
air from a car pump??

http://www.screwfix.com/app/sfd/cat/...0179&ts=84005#

Is it a simple matter of closing all the radiator valves and pumping
up the system?

pretty much.
I used one but left radiator valves open to check soundness of the
whole circuit.

also used a couple of Wicks push fit blanking cap things to blank off
sections of pipe which had no radiators currently.

Also enabled pipes to be left pressurised while carrying out other
flooring construction.

Very usefull device.

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