---
product_id: 403726417
title: "QWORK 2Pcs Brass One-way Check Valve, 1/2\" Female to 1/2\" Male Thread of Backflow Preventer"
brand: "qwork"
price: "S/.52"
currency: PEN
in_stock: true
reviews_count: 13
category: "Qwork"
url: https://www.desertcart.pe/products/403726417-qwork-2pcs-brass-one-way-check-valve-1-2-female
store_origin: PE
region: Peru
---

# Prevents backflow & contamination One-way flow control Durable brass build QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer

**Brand:** qwork
**Price:** S/.52
**Availability:** ✅ In Stock

## Summary

> 🚰 Stop backflow, start peace of mind!

## Quick Answers

- **What is this?** QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer by qwork
- **How much does it cost?** S/.52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/403726417-qwork-2pcs-brass-one-way-check-valve-1-2-female)

## Best For

- qwork enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Easy Installation:** Lightweight 0.08 kg design installs vertically or horizontally without hassle.
- • **Multi-Scenario Compatibility:** Perfect for water heaters, toilets, and water towers—keeping your water supply pure and efficient.
- • **Precision One-Way Valve Design:** Ensures seamless, unidirectional flow to protect your system from costly backflow issues.
- • **Versatile Threaded Connections:** 1/2" Female to 1/2" Male NPT threads fit standard plumbing fixtures effortlessly.
- • **Corrosion-Resistant Brass Construction:** Engineered for longevity and reliable performance in any plumbing setup.

## Overview

The QWORK 2Pcs Brass One-way Check Valve features durable brass construction and 1/2" female to 1/2" male threaded connections, designed to prevent backflow in plumbing systems. Suitable for gas and liquid transmission under constant pressure, it installs easily in vertical or horizontal positions, ensuring reliable, corrosion-resistant performance across multiple applications like water heaters and toilets.

## Description

QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer: desertcart.com: Industrial & Scientific

Review: Works well stopping the backflow. - It works perfectly. Cold water was mixing into the hot at one of my sinks. This isolated them and my problem is gone. If you need a backflow valve, this one works!
Review: 1 inch pex to 3/4 copper adapter - Arrived timely good quality

## Features

- Function: One-way check valve to prevent medium in the pipeline without backflow. It can be used to transmit gas and liquids under constant pressure. Vertical or horizontal levels can be used.
- Reliable Brass Construction: This high-quality Brass Check Valve is made from durable brass material, ensuring long-lasting performance and resistance against corrosion.
- Versatile Applications: Ideal for use in various scenarios, including water towers, water heaters, and toilets, this check valve ensures efficient operation and reliable water supply.
- Size: One-way flow of 1/2" Male to 1/2" Female Thread, please confirm the direction before procurement and installation. If the installation is reversed, the water will not come out.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09LTW2ZK2 |
| Best Sellers Rank | #36,306 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #43 in Check Valves |
| Brand | QWORK |
| Brand Name | QWORK |
| Color | Female to Male |
| Connector Type | Threaded |
| Customer Reviews | 4.1 out of 5 stars 171 Reviews |
| Exterior Finish | Brass |
| Item Weight | 0.08 kg |
| Manufacturer | QWORK |
| Manufacturer Part Number | WD5767 |
| Material | Brass |
| Material Type | Brass |
| Model Number | WD5767 |
| Number of Pieces | 2 |
| Size | 1/2 inch - 2 pcs |
| Thread Size | 0.5 inch |
| Thread Type | NPT |
| UPC | 734900620739 |
| Unit Count | 2 Count |

## Product Details

- **Brand:** QWORK
- **Color:** Female to Male
- **Connector Type:** Threaded
- **Exterior Finish:** Brass
- **Item Weight:** 0.08 Kilograms
- **Material:** Brass
- **Number of Pieces:** 2
- **Size:** 1/2 inch - 2 pcs
- **Thread Size:** 0.5 inch
- **Thread Type:** NPT

## Images

![QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer - Image 1](https://m.media-amazon.com/images/I/61RhdaU6iQL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well stopping the backflow.
*by B***R on April 27, 2026*

It works perfectly. Cold water was mixing into the hot at one of my sinks. This isolated them and my problem is gone. If you need a backflow valve, this one works!

### ⭐⭐⭐⭐⭐ 1 inch pex to 3/4 copper adapter
*by D***L on March 27, 2026*

Arrived timely good quality

### ⭐ Not good for RV water system.
*by N***R on September 17, 2025*

I installed this inline in my RV water system. It immediately reduced water flow and pressure. I don't think the shower would be at all effective. After 2 weeks it clogged up. My freshwater tank was cleaned in early spring, so there is probably some growth over the summer, but the water smells and tastes fine and has no slippery feel. I installed the second one while I search for a better solution. I put fresh water in the tank before installing the 2nd one. It stopped flowing today. I took it apart and found they are not clogging up, but getting stuck closed. THEY ARE NOT SUITABLE FOR RV WATER SYSTEMS! Also note that the threads are not NPT. They will fit NPT, but you will need to use thread tape.

## Frequently Bought Together

- QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer
- Camco RV Water Heater Backflow Preventer | Features a Heavy-Duty Brass with a Stainless Spring Construction and a 1/2-Inch Male x Female NPT (23303)
- Valterra P23415LF 1/2" Lead-Free Check Valve

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pe/products/403726417-qwork-2pcs-brass-one-way-check-valve-1-2-female](https://www.desertcart.pe/products/403726417-qwork-2pcs-brass-one-way-check-valve-1-2-female)

---

*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-09-20*