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Honeywell DU145 Automatic Bypass Valve (Angled)

Marsoni M251S
Sale price$59.32
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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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4.3 ★★★★★
Based on 212 reviews
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Verified Purchase
Jim Russell
Lexington, US
★★★★★ 5
Starter
Why did you pick this product vs others?: Good replacement. 
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 20, 2025
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Verified Purchase
william
Battle Creek, US
★★★★★ 5
Starter works great
Fits and works great 2005 Mercury mariner 3.0
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Reviewed in the United States on August 29, 2025
J
Verified Purchase
J G.
Phoenix, US
★★★★★ 5
Reliable part
The price of this item was a bit of a shock. A good one though. I gave it to my mechanic, he installed it with no problems. Runs just fine. Would buy again
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Reviewed in the United States on May 5, 2026
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Verified Purchase
Joel sulbaran
Lowell, US
★★★★★ 4
Entrega a tiempo
Exelente
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Reviewed in the United States on October 3, 2025
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Verified Purchase
Lisa Berger
Birmingham, US
★★★★★ 5
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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Reviewed in the United States on March 5, 2025

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