


Honeywell DU145 Automatic Bypass Valve (Angled)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Honeywell DU145 Automatic Bypass Valve (Angled)The Honeywell DU145 automatic bypass and differential pressure valve is used to maintain constant differential pressure in a heating system. It reduces flow noise in a system, particularly as thermostatic radiator valves are closing. The boiler return temperature is raised and this reduces the corrosion caused by flue gas condensation. In addition, when radiator valves are closed it also maintains flow over the temperature sensor on the boiler to
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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Good replacement.
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★★★★★ 5
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Reviewed in the United States on August 29, 2025
★★★★★ 5
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Reviewed in the United States on May 5, 2026
★★★★★ 4
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Reviewed in the United States on October 3, 2025
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Works and fits as described !
Works perfectly! On time ! Fits perfectly! First time I ordered this item they sent the wrong part completely but this time it’s perfect!
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