---
product_id: 70269122
title: "0372271 530C 3/4\" Poppet Style Adjustable Relief Valve"
brand: "watts"
price: "VT39983"
currency: VUV
in_stock: true
reviews_count: 8
category: "Watts"
url: https://www.desertcart.vu/products/70269122-0372271-530c-3-4-poppet-style-adjustable-relief-valve
store_origin: VU
region: Vanuatu
---

# Adjustable calibrated relief 300 PSI max pressure Durable brass & bronze build 0372271 530C 3/4" Poppet Style Adjustable Relief Valve

**Brand:** watts
**Price:** VT39983
**Availability:** ✅ In Stock

## Summary

> 🔧 Master your pressure, avoid the mess!

## Quick Answers

- **What is this?** 0372271 530C 3/4" Poppet Style Adjustable Relief Valve by watts
- **How much does it cost?** VT39983 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/70269122-0372271-530c-3-4-poppet-style-adjustable-relief-valve)

## Best For

- watts enthusiasts

## Why This Product

- Trusted watts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Application:** Perfect for water, oil, and air systems—industrial-grade reliability in a compact form.
- • **Thermal Expansion Ready:** Ideal for bypass thermal expansion pressure relief, keeping your system safe and efficient.
- • **Threaded NPT Connections:** Easy installation with standard male inlet and female drain outlets for seamless integration.
- • **Precision Pressure Control:** Calibrated adjustment lets you dial in exact relief pressure for ultimate system safety.
- • **Robust Brass & Bronze Construction:** Engineered with premium materials to withstand harsh commercial and residential environments.

## Overview

The Watts 0372271 530C is a 3/4" poppet style adjustable relief valve designed for commercial, residential, and industrial systems. Featuring a durable brass and bronze body, stainless steel spring, and Buna-N seals, it offers precise pressure relief up to 300 PSI. Its calibrated adjustment and threaded NPT connections ensure easy installation and reliable protection against excessive pressure in water, oil, or air systems.

## Description

Series 530C Calibrated Pressure Relief Valves are used in commercial, residential and industrial applications to protect against excessive pressure in systems containing water, oil, or air. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, stainless steel spring, brass bonnet, Buna-N disc, and Buna-N O-ring. Series 530C has a calibrated adjustment feature for setting the valve to the required relief pressure, and is ideal for by-pass thermal expansion pressure relief (not ASME approved). Model 530FP is for use in fire protection systems.

Review: Valve - Good quality product .
Review: 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.

## Features

- Poppet Style Adjustable Relief Valve
- Watts 3/4" 530C Releif Valve
- Boiler relief valve
- Brass construction
- Threaded

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Watts |
| Exterior Finish | oil |
| Inlet Connection Type | National Pipe Tapered |
| Item dimensions L x W x H | 3.8 x 2.3 x 1.5 inches |
| Material | Brass |
| Maximum Operating Pressure | 300 Pound per Square Inch |

## Product Details

- **Material:** Brass
- **Brand:** Watts
- **Item dimensions L x W x H:** 3.8 x 2.3 x 1.5 inches
- **Exterior Finish:** oil
- **Inlet Connection Type:** National Pipe Tapered
- **Maximum Operating Pressure:** 300 Pound per Square Inch
- **Number of Ports:** 2
- **Specification Met:** ASME
- **Global Trade Identification Number:** 00098268018240
- **Manufacturer:** Watts

## Images

![0372271 530C 3/4" Poppet Style Adjustable Relief Valve - Image 1](https://m.media-amazon.com/images/I/71R0zad7DCL.jpg)

## Questions & Answers

**Q: does this have 3/4 out outlet? seems some don't.**
A: 1/2 inch FIP outlet

**Q: what is the ranges for this valve up to 300 p.s.i.?**
A: 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Valve
*by K***S on May 21, 2025*

Good quality product .

### ⭐⭐⭐⭐⭐ Seems to work well.
*by C***N on July 29, 2024*

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.

### ⭐⭐⭐ Nicely made but...
*by S***E on September 18, 2025*

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

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.vu/products/70269122-0372271-530c-3-4-poppet-style-adjustable-relief-valve](https://www.desertcart.vu/products/70269122-0372271-530c-3-4-poppet-style-adjustable-relief-valve)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-26*