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Watts 0371271 530C 1/2" Poppet Style Adjustable Relief Valve

3.3 out of 5 stars 4 customer reviews
| 5 answered questions

Price: $45.01 & FREE Shipping on orders over $49. Details
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  • Calibrated adjustment feature for setting valve to relief pressure required
  • Adjustable range 50 to 175 psi (3.4 to 12.1 bar)
  • All brass construction
  • Inlet (bottom), male NPT threaded
  • Outlet (side), female NPT threaded
10 new from $32.40

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$45.01 & FREE Shipping on orders over $49. Details In Stock. Sold by Greater Sales and Fulfilled by Amazon. Gift-wrap available.

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Product Description

Color: N/A

Watts 530C ½": Calibrated Pressure Relief Valve is a spring operated brass valves designed for use only as protection from the buildup of excessive pressure in systems containing water, oil or air. 530C ½" valve incorporate a calibrated adjustment feature for setting the valve to the relief pressure required. These valves are ideally suited for bypass thermal expansion relief. MFR Part # 530C 1/2 Item Model # 530-C 1/2"

Product Information

Color:N/A

Technical Details

Part Number 1/2 530-C
Item Weight 6.4 ounces
Product Dimensions 3.8 x 2.3 x 1.5 inches
Item model number 1/2 530-C
Color N/A
Finish N/A
Material Brass
Item Package Quantity 1
Batteries Included? No
Batteries Required? No

Additional Information

ASIN B000936L24
Customer Reviews
3.3 out of 5 stars 4 customer reviews

3.3 out of 5 stars
Best Sellers Rank #347,639 in Home Improvements (See top 100)
#95 in Industrial & Scientific > Hydraulics, Pneumatics & Plumbing > Valves > Relief Valves
#272 in Industrial & Scientific > Hydraulics, Pneumatics & Plumbing > Hydraulic Equipment > Valves
Shipping Weight 6.4 ounces (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available April 28, 2005

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Reviews

Top Customer Reviews

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High quality valve!
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Contains lead. Apparently not allowed for plumbing applications in California.

Other than that, it's adjustable.
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Color: N/A Verified Purchase
Extremely fast shipping.
Played with pressure adjustment. Markings may not line up exactly with actual pressure needed to open the valve but it's close enough. I can finally rest at ease because I was able to easily adjust it to the range I need.
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Color: N/A Verified Purchase
Used to replace a 75lb pressure relief valve installed by Ryland Homes, on a county water line, that a county employee told me gets up to 100 PSI. Every other time I ran the Rainbird system, the old valve on the main from the street would open and not shut. If I was away the water ran out into the street. You would think a neighbor might come over and shut it off, it is outside on the house, or ring the bell. I got a $580.00 water bill one month. Tampa, Hillsborough County, FL. Moreover, the old valve would not close again, until you shut the main off and turned it back on.

This one I set at 105 PSI and it has not opened once. I think I might turn it lower, until it does open and see if it closes on its own, once excess pressure is released by it. I have not done that yet.
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