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22mm. Maintains minimum flow rate in heating systems fitted with thermostatic radiator valves. The Automatic By-Pass opens when the TRVs close, thus ensuring a quiet operation. High quality, reliable, just set and forget.

22mm. Maintains minimum flow rate in heating systems fitted with thermostatic radiator valves. The Automatic By-Pass opens when the TRVs close, thus ensuring a quiet operation. High quality, reliable, just set and forget.
Customer Reviews for Drayton Angled Auto Bypass Valve 22mm
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