Replacing a radiator on an open system, full drain down can mean air locks and spending ages getting the air out the system, but this is way you don’t have to drain that much water which makes it a quicker and easier job #plumber #plumbing #plumbers #plumbinglife #plumbersofinstagram #plumblife #plumberslife #plumbingproblems #plumbingsolutions #plumbingtips | Blue Bulldog Plumbing and Heating