---
product_id: 464935728
title: "Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4\""
brand: "merrill"
price: "¥9010"
currency: JPY
in_stock: true
reviews_count: 5
category: "Merrill"
url: https://www.desertcart.jp/products/464935728-merrill-mfg-prvnl75-no-lead-brass-pressure-relief-valve-75
store_origin: JP
region: Japan
---

# 3/4" male NPT x 1/2" female FPT Lead-free brass & stainless steel 75 PSI max pressure Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4"

**Brand:** merrill
**Price:** ¥9010
**Availability:** ✅ In Stock

## Summary

> 🚰 Pressure Perfected: Protect Your System, Elevate Your Peace of Mind

## Quick Answers

- **What is this?** Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4" by merrill
- **How much does it cost?** ¥9010 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/464935728-merrill-mfg-prvnl75-no-lead-brass-pressure-relief-valve-75)

## Best For

- merrill enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Robust Design:** Small footprint (6.3 x 3.7 x 2.7 cm) with stainless steel springs for long-lasting performance.
- • **Precision Pressure Protection:** Safeguard your cold water systems with a reliable 75 PSI relief valve.
- • **Seamless Plumbing Integration:** Standard 3/4" male NPT and 1/2" female FPT connections for easy installation.
- • **Certified Lead-Free Durability:** IAMPO-certified brass construction ensures safety and compliance with federal regulations.
- • **Engineered for Cold Water Systems:** Optimized exclusively for cold water, preventing costly damage to pumps and tanks.

## Overview

The Merrill MFG PRVNL75 is a lead-free brass pressure relief valve designed to protect cold water well tank systems from excessive pressure up to 75 PSI. Featuring IAMPO certification and stainless steel control springs, it ensures durable, compliant, and reliable performance with standard 3/4" male NPT and 1/2" female FPT connections. Ideal for submersible pumps, this compact valve prevents costly damage while meeting federal safety standards.

## Description

Merrill MFG PRVNL75 pressure relief valve protects well tank systems from pressure buildup. Recommended for use on all submersible pumps to protect against damage to piping and pressure tanks. The solid-brass design meets federal low lead regulation. * Not for use with water heaters -Cold water systems only

Review: Quality Valve
Review: good product

## Features

- Pressure relief valves are for protection against excessive pressure
- 3/4 in. male NPT x 1/2 in. female FPT
- Lead free brass with stainless steel control springs - IAMPO Certified
- 3/4" Line Connection, 75 PSI
- Not for use with water heaters -Cold water systems only

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08D3YMKWB |
| Best Sellers Rank | 235,003 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 245 in Relief Valves |
| Brand | Merrill |
| Customer Reviews | 4.5 out of 5 stars 330 Reviews |
| Exterior Finish | Brass,Stainless Steel |
| Exterior finish | Brass , Stainless Steel |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Inlet connection size | 0.5 Inches |
| Inlet connection type | National Pipe Tapered |
| Item Dimensions | 6.3 x 3.7 x 2.7 centimetres |
| Item dimensions L x W x H | 6.3 x 3.7 x 2.7 centimetres |
| Item height | 1.05 inches |
| Manufacturer | Merrill Manufacturing Company |
| Material | Brass , Lead, Lead Free Brass, Stainless Steel |
| Maximum Pressure | 75 Pound per Square Inch |
| Model Number | PRVNL75 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.5 Inches |
| Outlet Connection Type | MNPT |
| Specification Met | NPT |
| UPC | 642367450236 |
| Unit Count | 1.0 Count |
| Valve Type | Pressure Relief Valve |

## Product Details

- **Brand:** Merrill
- **Exterior finish:** Brass,Stainless Steel
- **Inlet connection size:** 0.5 Inches
- **Inlet connection type:** National Pipe Tapered
- **Item dimensions L x W x H:** 6.3 x 3.7 x 2.7 centimetres
- **Material:** Brass,Lead,Lead Free Brass,Stainless Steel
- **Maximum operating pressure:** 75 Pound per Square Inch
- **Number of ports:** 2
- **Outlet connection size:** 0.5 Inches
- **Outlet connection type:** MNPT

## Images

![Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4" - Image 1](https://m.media-amazon.com/images/I/51UQ663NFdL.jpg)
![Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4" - Image 2](https://m.media-amazon.com/images/I/615cOhe2IWL.jpg)
![Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4" - Image 3](https://m.media-amazon.com/images/I/71GSXfN7m4L.jpg)

## Questions & Answers

**Q: Will this pressure valve reset after water line thaws**
A: The preset pressure relief valve will still be set at 75 PSI as long as the valve is not broken because it was frozen.  If a valve is allowed to freeze then the warranty is void.  To answer your question thawing out a water line will not change the valve preset pressure.

**Q: In my house main, I have installed pressure relief valves but they all leak at a drop/second Would the leak stopped over time as it stabilizes?**
A: If the pressure on the house main is close to 75psi then it will continue to drip, or if the pipes were not flushed out before the valve was installed then a small piece of something like sand could be wedged under the seal of the valve.  So, no for sure answer if it will quit.
Unless the water pressure in the pipe is around 75 psi.

**Q: How do you adjust the pressure? There was no documentation.**
A: This valve can not be adjusted.  We can not assume the liability if adjusted incorrectly or set at to high a pressure.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality Valve
*by I***N on 26 February 2025*



### ⭐⭐⭐⭐⭐ good product
*by C***. on 19 October 2025*



### ⭐⭐⭐⭐⭐ As advertised
*by J***. on 29 July 2025*



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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-06*