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Differential bypass valve is designed to prevent the pump from working against a closed circuit when all the 2 port control valves or thermostatic radiators have closed.
Part number: 21382
Automatic differential by-pass valve, angled with 22 mm compression connect...
Part number: 18865
Honeywell DU146 commercial automatic bypass valve controls flow of water th...
Part number: 21383
Automatic differential by-pass valve, straight with 22 mm compression conne...
Part number: 18863
Honeywell straight or angled automatic bypass valve controls the flow of wa...
Part number: 17884
The ABV-22 automatic bypass and differential pressure valve with differenti...
Part number: 19570
Differential bypass valve is designed to prevent the pump from working agai...
Part number: 18864
Part number: 12161
WRAS approved, angled body. This valve is very effective in systems where v...
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