Allowing flow through the bypass only as needed, when flow through the system is reduced and when zone valves or radiator thermostats are closing, this valve minimises energy use. · Wide differential pressure range 0.1 - 0.6 bar.
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Honeywell DU145 Automatic By-Pass Valve 22mm British Gas no. 378520.
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Honeywell DU145 Auto By-Pass Valve - 22mm Angled RRP £58.40. Condition is "New". Dispatched with Royal Mail 2nd Class.
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5x Honeywell 22mm Automatic Bypass Valve Angled DU145-3/4B.
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