---
product_id: 438240096
title: "Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4\""
brand: "merrill"
price: "¥9745"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/438240096-merrill-mfg-prvnl75-no-lead-brass-pressure-relief-valve-75
store_origin: JP
region: Japan
---

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

**Brand:** merrill
**Price:** ¥9745
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of pressure spikes with Merrill’s fail-safe valve!

## 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?** ¥9745 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/438240096-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

- • **Premium Lead-Free Brass:** Certified safe and eco-friendly materials for peace of mind and compliance.
- • **Precision Pressure Control:** Engineered to protect your system from dangerous overpressure up to 75 PSI.
- • **Versatile Connection Sizes:** 3/4" male NPT inlet and 1/2" female FPT outlet for seamless integration.
- • **Cold Water System Optimized:** Specifically designed for cold water applications—avoid costly water heater damage.
- • **Durable Stainless Steel Springs:** Long-lasting corrosion resistance ensures reliable performance over time.

## Overview

The Merrill MFG PRVNL75 is a lead-free brass pressure relief valve designed for cold water systems, featuring a 75 PSI maximum operating pressure and 3/4" male NPT x 1/2" female FPT connections. Certified by IAMPO, it combines durable stainless steel springs with eco-conscious materials to ensure reliable, safe pressure regulation and system protection.

## Description

Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4"

## 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 |
|---------------|-------|
| Material | Stainless Steel,Lead Free Brass,Lead,Brass |
| Brand | Merrill |
| Item dimensions L x W x H | 6.3 x 3.7 x 2.7 Centimeters |
| Exterior Finish | Stainless Steel,Brass |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | Flange |
| Outlet Connection Type | FPT |
| Maximum Operating Pressure | 75 Pound per Square Inch |
| Number of Ports | 2 |
| Outlet Connection Size | 0.75 Inches |
| Specification Met | NPT |
| Manufacturer | Merrill Manufacturing Company |
| UPC | 642367450236 |
| Country of Origin | USA |
| Item model number | PRVNL75 |
| Product Dimensions | 6.27 x 3.68 x 2.67 cm; 181 g |
| ASIN | B08D3YMKWB |

## Product Details

- **Material:** Stainless Steel,Lead Free Brass,Lead,Brass
- **Brand:** Merrill
- **Item dimensions L x W x H:** 6.3 x 3.7 x 2.7 Centimeters
- **Exterior Finish:** Stainless Steel,Brass
- **Inlet Connection Size:** 0.5 Inches
- **Inlet Connection Type:** Flange
- **Outlet Connection Type:** FPT
- **Maximum Operating Pressure:** 75 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.75 Inches

## Images

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

## Frequently Bought Together

- Merrill MFG PRVNL75 No Lead Brass Pressure Relief Valve 75 PSI, 3/4"
- SENCTRL 100 Psi Lead-Free Glycerin Liquid Filled Low Pressure Gauge, 2.5" Dial Size, 1/4" NPT Lower Mount, Stainless Steel Case, for Home Potable Water Pump, Air, Well, RV Hose, Pressure Test
- Merrill MFG PRVNL50 1/2" No-Lead Pressure Relief Valve, Brass

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-07*