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Merrill MFG PRVNL50 1/2' No-Lead Pressure Relief Valve, Brass

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$10.80

$ 4 .99 $4.99

In Stock

About this item

  • Pressure relief valves are for protection against excessive pressure
  • 1/2 in. male NPT x 1/2 in. female FPT
  • Lead free brass with stainless steel control springs - IAMPO Certified
  • 1/2" Line Connection, 75 PSI
  • Not for use with water heaters - Cold water systems only



Product Description

Merrill MFG. Pressure Relief Values - Under Pressure? We got you covered!

Product Details

Photo of Merrill Manufacturing No-Lead Brass Pressure Relief Valve

Size

1/2 in. male NPT x 1/2 in. female FPT

Photo of Merrill Manufacturing No-Lead Brass Pressure Relief Valve

Pressure Rating

1/2" Line Connection, relieves pressure at 75 PSI - Field Adjustable.

Photo of Merrill Manufacturing No-Lead Brass Pressure Relief Valve

Usage

Corrosion-resistant and solid no-lead brass construction is designed to relieve excessive pressure in the water system. Recommended for all cold water system installation.

Measurements

Merrill MFG. Pressure Relief Valve 1/2" NPT with 75 PSI - Measurements

Features & Benefits

Merrill MFG. Pressure Relief Valve 1/2" NPT with 75 PSI - Features & Benefits
Connection Size 1/2 in. x 1/2 in. 3/4 in. x 1/2 in. 1/2 in. x 1/2 in. 3/4 in. x 1/2 in 3/4 in. x 3/4 in.
PSI 75 75 100 100 100
Material No Lead Brass No Lead Brass No Lead Brass No Lead Brass No Lead Brass
Weight 3.5 lbs 3.8 lbs 3.5 lbs 3.5 lbs 4.0 lbs

LeAnne
2025-09-06 09:59:17
I purchased this after watching a Home Depot How To Video on YouTube. They were double the price at the common hardware stores when I needed it and I couldn't find this size in stock in store. Anyway, it worked for my pressure tank tee. And it's not the cheap, made in China lightweight material. It's pretty heavy.
Jbdhere
2025-08-25 18:31:29
UpdatedI thought it opened above the rated pressure of 75psi but I plumbed it to dump back into the supply line which is at 15psi. This accounts for the pump pressure relief at 90psi.I know this because the pump switch failed to shut off the pump until over 100psi.
thebasicb
2025-08-09 18:46:55
Used in our Well Water System. Valve seems to be well made and half the price of big box stores. Saved me a trip and money.
Elmer martin. (TOM)
2025-05-10 13:11:54
Product is well made and exactly as advertised...I am praying it never has to operate..
Ms Rose
2025-05-03 15:04:09
The pressure relief valve on my incoming water line was dripping slowly and steadily. After researching it (what is the thing called?), I went to my local box store to grab one. They had no idea what I was after. I used the app to find one on the shelf. They were out of stock. I turned to my reliable backup, Amazon. Two days later this little baby appeared and was installed without incident. My leak is gone. I am happy. The reason I didn't go five stars is that in some prior reviews I read about a leak developing over time. My anxiety won't allow me to go further than four stars but it is above average.
Customer
2025-01-31 18:48:32
It seems to be reasonably high-quality and built well, but for some reason these things never seem to last more than a year or two before they start leaking. Hope this one lasts.
Aidas
2024-12-28 17:08:42
starts leaking at 60 psi.
The Fam
2024-12-18 18:45:50
I bought this one after I kept having to return this type of valve to the local big box store almost monthly because they would start leaking within weeks after installing.These are made in Taiwan and the difference in craftsmanship is measurable by how much longer it is already lasting.