---
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: "AR$27823"
currency: ARS
in_stock: true
reviews_count: 8
category: "Qwork"
url: https://www.desertcart.com.ar/products/403726417-qwork-2pcs-brass-one-way-check-valve-1-2-female
store_origin: AR
region: Argentina
---

# Leak-proof threaded fit 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:** AR$27823
**Availability:** ✅ In Stock

## Summary

> 🔧 Secure your flow, prevent the backflow—because your system deserves the best!

## 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?** AR$27823 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/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

- • **Trusted Performance:** Highly rated for leak-free operation and dependable flow control—no compromises.
- • **Precision One-Way Valve:** Prevents backflow to protect your system and maintain consistent pressure.
- • **Corrosion-Resistant Brass:** Engineered for longevity and reliability in any plumbing setup.
- • **Versatile Orientation Use:** Works flawlessly in both vertical and horizontal pipelines for ultimate flexibility.
- • **Universal 1/2" Threaded Fit:** Seamlessly integrates with standard plumbing fixtures for hassle-free installation.

## Overview

The QWORK 2Pcs Brass One-way Check Valve features a robust brass construction with 1/2" female to 1/2" male threaded connections, designed to prevent backflow in gas and liquid pipelines. Suitable for vertical or horizontal installation, it ensures reliable, leak-proof operation in water heaters, towers, and toilets, delivering durable and efficient plumbing performance.

## Description

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

Review: Check valves that work!!! - They work perfect Add some loctite 567 to the threads and you're good to go
Review: As advertised - Fit well at all connections, no leaks. Seems to control flow well.

## 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 |
|---------------|-------|
| Brand | QWORK |
| Color | Female to Male |
| Connector Type | Threaded |
| Material | Brass |
| Size | 1/2 inch - 2 pcs |
| Thread Size | 0.5 inch |

## 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)
![QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer - Image 2](https://m.media-amazon.com/images/I/61JNP1IelzL.jpg)
![QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer - Image 3](https://m.media-amazon.com/images/I/61H6TH9lz8L.jpg)
![QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer - Image 4](https://m.media-amazon.com/images/I/61SP4EiKRqL.jpg)
![QWORK 2Pcs Brass One-way Check Valve, 1/2" Female to 1/2" Male Thread of Backflow Preventer - Image 5](https://m.media-amazon.com/images/I/61JBQZuKM9L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Check valves that work!!!
*by J***S on January 29, 2026*

They work perfect Add some loctite 567 to the threads and you're good to go

### ⭐⭐⭐⭐⭐ As advertised
*by C***E on February 3, 2026*

Fit well at all connections, no leaks. Seems to control flow well.

### ⭐ 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

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

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-22*