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

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 Brass & Stainless Steel Build

⚙️3/4" NPT Threaded Connections

🛡️Adjustable Pressure Relief up to 300 PSI

€ 270.57

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
WATTS
Exterior finish
Brass Steel
Inlet connection size
0.75 Inches

Description

🛠️ Master your pressure, protect your system — relief that works as hard as you do!

EASY INSTALLATION - Standard 3/4" NPT threaded inlet and outlet connections for seamless integration.
ROBUST CONSTRUCTION - Solid brass body with stainless steel spring ensures long-lasting, corrosion-resistant performance.
TRUSTED RELIABILITY - Backed by Watts’ engineering legacy and 4.1-star user satisfaction for peace of mind.
VERSATILE APPLICATION - Ideal for commercial, residential, and industrial water, oil, or air systems.
PRECISION PRESSURE CONTROL - Calibrated adjustment lets you set exact relief pressure for ultimate system safety.

The Watts 0372271 530C is a 3/4" poppet style adjustable relief valve crafted from brass and stainless steel, designed to protect water, oil, and air systems by releasing excess pressure up to 300 PSI. Featuring calibrated pressure adjustment and standard NPT threaded connections, it’s a reliable choice for commercial, residential, and industrial applications.

Specifications

Asin	B00EZH8AQA
Batteries	1 AAA batteries required.
Best Sellers Rank	#2,361 in Industrial Pipe Fittings
Date First Available	16 July 2022
Is Discontinued By Manufacturer	No
Item Model Number	372271
Manufacturer	Watts
Product Dimensions	9.65 x 5.84 x 3.81 cm; 0.28 g

Reviews

User

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

User

Valve

Good quality product .

21.05.2025

User

Nicely made but...

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

18.09.2025

User

Relief valve

Part as described easily installed.

14.12.2024

User

Works as intended

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

7.04.2025

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€ 270.57

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews