what is the ranges for this valve up to 300 p.s.i.?

Type : Calibrated Pressure Nominal Size : 3/4 Inch Connection Type : FNPT Operating Pressure : 300 psi Setting Pressure : 50 To 175 psi Number Of Ports/Ways : 2 Body Material : Brass Disc Material : Buna-N (Nitrile) Bonnet : Brass Industry Standards : ISO Certified Temperature Rating : 180 deg F

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Watts 0372271 530C 3/4" Poppet Style Adjustable Relief Valve

Product ID: 456281135

Details

Brand
WATTS
Exterior finish
Brass Steel
Inlet connection size
0.75 Inches
Item dimensions L x W x H
9.7 x 5.8 x
Material
Brass

🔩Durable 3/4" NPT threaded brass construction

⚙️Adjustable pressure setting up to 300 PSI

🛠️Dual inlet/outlet ports for versatile installation

R8076

Duties & taxes included

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Stay pressure-safe and in control with Watts’ precision relief valve!

RUGGED BRASS BUILD - Premium brass and stainless steel components ensure long-lasting corrosion resistance and reliability.
THREADED FOR EASY FIT - Standard 3/4" NPT threaded connections guarantee hassle-free installation and secure sealing.
TRUSTED BRAND QUALITY - Watts, a leader in plumbing innovation, delivers proven performance with a 4.2-star user rating.
VERSATILE APPLICATION - Perfect for commercial, residential, and industrial water, oil, or air systems—engineered to protect.
PRECISION PRESSURE CONTROL - Calibrated poppet style valve lets you dial in exact relief pressure for ultimate system safety.

The Watts 0372271 530C is a 3/4" poppet style adjustable relief valve crafted from durable brass and stainless steel. Designed for commercial, residential, and industrial systems, it offers calibrated pressure relief up to 300 PSI with threaded NPT connections for easy installation. Ideal for protecting water, oil, or air systems from overpressure, this valve combines trusted Watts quality with versatile application and reliable performance.

Specifications

ASIN	B00EZH8AQA
Best Sellers Rank	#217,024 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,139 in Industrial Pipe Fittings
Brand	WATTS
Brand Name	WATTS
Connector Type	Threaded
Customer Reviews	4.2 out of 5 stars 42 Reviews
Exterior Finish	Brass,Stainless Steel
Exterior finish	Brass , Stainless Steel
Global Trade Identification Number	00098268018240
Inlet Connection Size	0.75 Inches
Inlet Connection Type	National Pipe Tapered
Inlet connection size	0.75 Inches
Inlet connection type	National Pipe Tapered
Item Dimensions	9.7 x 5.8 x 3.8 centimeters
Item Weight	0.01 Ounces
Item dimensions L x W x H	9.7 x 5.8 x 3.8 centimeters
Manufacturer	Watts
Manufacturer Part Number	372271
Material	Brass
Material Type	Brass
Maximum Pressure	300 Pound per Square Inch
Model Number	372271
Number of Ports	2
Outlet Connection Size	0.75 Inches
Outlet Connection Type	FNPT
Size	3/4 inch
Specification Met	asme approved
Thread Size	3/4" NPT
UPC	098268018240
Unit Count	1 Count
Valve Type	relief valve,valve

Reviews

C**N

Seems to work well.

I am using a jaccuzi pump for irrigation, and needed a blow off type of pressure regulator. I ran from the output back to the input, and set the pressure to 75 PSI. seems to be working. Mark.

29.07.2024

K**S

Valve

Good quality product .

21.05.2025

S**E

Nicely made but...

Nicely made but contains lead alloyed in the brass so risky?

18.09.2025

E**E

Relief valve

Part as described easily installed.

14.12.2024

D**K

Works as intended

A little over a year and it's still working fine

7.04.2025

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