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- Plumbing Valves - 1/2" Side Outlet Safety Valve 3 Bar
Plumbing Valves - 1/2" Side Outlet Safety Valve. 3 Bar Designed to relieve any excessive pressure in a heating system. This can occasionally occur if the designed venting arrangements become unable to operate normally. For example, if blockages occur in the pipework, or a sudden heat generated pressure build-up becomes greater than the expansion vent or a sealed system component can accommodate..