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Aquatrol Bronze Adjustable Relief Valve, MNPT Inlet Type, FNPT Outlet Type - 55B-50

Marsoni M251S
Sale price$55.43
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Get it in 3 business days with 1 day shipping. Friday, May 29
Aquatrol Bronze Adjustable Relief Valve, MNPT Inlet Type, FNPT Outlet Type - 55B-50Easily adjusted in the field by removing the hex cap, this AQUATROL adjustable relief valve is ideal for pressure relief, liquid relief, bypass, and over protection. Easy to clean and maintain by simply removing the bonnet. Model has a bronze disc thats lapped into position to minimize leakage. For liquid relief lines, tanks, sprinkler systems, and overprotection.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
Based on 1137 reviews
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Verified Purchase
Jesse Simpson
Charlottesville, US
★★★★★ 4
Decent Kit
It's a pretty decent kit. Comes with all the lower unit options whether yours needs that particular part or not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2025
E
Verified Purchase
Eli
Chelsea, US
★★★★★ 5
Alpha one gen I
Good fit
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Reviewed in the United States on March 1, 2026
H
Verified Purchase
Hank
Alexandria, US
★★★★★ 5
Quality for the price
All necessary parts good quality
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Reviewed in the United States on March 16, 2026
A
Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 5
quality
prefect fit, best pricing over local outlets wanting twice as much
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Reviewed in the United States on February 19, 2026
A
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Amazon Customer
Dallas, US
★★★★★ 3
Ok
Not bad not great. Quality feels cheap.
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Reviewed in the United States on December 30, 2025

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