---
product_id: 229523294
title: "PRVNL75"
brand: "merrill"
price: "172 zł"
currency: PLN
in_stock: true
category: "Merrill"
url: https://www.desertcart.pl/products/229523294-prvnl75
store_origin: PL
region: Poland
---

# Lead-Free Brass with Stainless Steel Springs 75 PSI Max Pressure Rating 3/4" NPT Threaded Connection PRVNL75

**Brand:** merrill
**Price:** 172 zł
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Plumbing Game with Precision Pressure Control!

## Quick Answers

- **What is this?** PRVNL75 by merrill
- **How much does it cost?** 172 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/229523294-prvnl75)

## 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

- • **Effortless Installation:** Standard 3/4" male NPT x 1/2" female FPT threaded connections make setup quick and hassle-free—perfect for busy professionals.
- • **Certified Safety & Compliance:** IAMPO and RoHS certified, ensuring industry-leading standards and peace of mind for your professional projects.
- • **Precision Pressure Protection:** Engineered to safeguard your cold water systems from dangerous overpressure with a reliable 75 PSI relief threshold.
- • **Durable Lead-Free Construction:** Crafted from premium lead-free brass paired with corrosion-resistant stainless steel springs for longevity and eco-conscious performance.
- • **Optimized for Cold Water Systems:** Specifically designed for cold water applications, ensuring optimal performance without compromise—know your valve, avoid costly mistakes.

## Overview

The Merrill MFG PRVNL75 is a high-quality, lead-free brass pressure relief valve rated for 75 PSI with 3/4" NPT threaded connections. Certified by IAMPO and RoHS, it offers reliable protection for cold water systems with durable stainless steel springs, ensuring safety and compliance for professional-grade plumbing installations.

## Description

Buy Merrill MFG PRVNL75 Brass Pressure Relief Valve 75 PSI, 3/4": Relief Valves - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Pressure relief valves are for protection against excessive pressure
- 3/4 in. male NPT x 1/2 in. female FPT
- Brass with stainless steel control springs - IAMPO Certified
- 3/4" Line Connection, 75 PSI
- Not for use with water heaters -Cold water systems only
- CALIFORNIA PROP 65 WARNING: Product may expose you to chemicals known to the State of California to cause cancer and reproductive harm. See P65Warnings.ca.gov for details

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08D3YMKWB |
| Best Sellers Rank | #30,004 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 in Relief Valves |
| Brand | Merrill |
| Brand Name | Merrill |
| Connector Type | Threaded |
| Customer Reviews | 4.5 out of 5 stars 383 Reviews |
| Exterior Finish | Brass |
| Inlet Connection Size | 0.75 inches |
| Inlet Connection Type | National Pipe Tapered |
| Item Dimensions | 2.47 x 1.45 x 1.05 inches |
| Item dimensions L x W x H | 2.47 x 1.45 x 1.05 inches |
| Manufacturer | Merrill Manufacturing Company |
| Manufacturer Part Number | PRVNL75 |
| Material | Brass |
| Material Type | Brass |
| Maximum Operating Pressure | 75 psi |
| Model Number | PRVNL75 |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.75 inches |
| Outlet Connection Type | MNPT |
| Size | 3/4 inch |
| Specification Met | IAMPO, RoHS |
| Thread Size | 3/4 inches |
| Thread Type | NPT |
| UPC | 642367450236 |
| Unit Count | 1 Count |
| Valve Type | Pressure Relief Valve |

## Product Details

- **Brand:** Merrill
- **Exterior Finish:** Brass
- **Inlet Connection Size:** 0.75 inches
- **Inlet Connection Type:** National Pipe Tapered
- **Item dimensions L x W x H:** 2.47 x 1.45 x 1.05 inches
- **Material:** Brass
- **Maximum Operating Pressure:** 75 psi
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.75 inches
- **Outlet Connection Type:** MNPT

## Images

![PRVNL75 - Image 1](https://m.media-amazon.com/images/I/615cOhe2IWL.jpg)
![PRVNL75 - Image 2](https://m.media-amazon.com/images/I/51UQ663NFdL.jpg)
![PRVNL75 - 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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**Shop now:** [https://www.desertcart.pl/products/229523294-prvnl75](https://www.desertcart.pl/products/229523294-prvnl75)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-11-11*