---
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: "67 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Qwork"
url: https://www.desertcart.pl/products/403726417-qwork-2pcs-brass-one-way-check-valve-1-2-female
store_origin: PL
region: Poland
---

# Corrosion-resistant for liquids 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:** 67 zł
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock in flawless flow—never look back with QWORK!

## 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?** 67 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/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 with 4.1 stars and proven reliability in water and gas systems
- • **Precision One-Way Flow:** Prevents backflow to protect your system effortlessly
- • **Versatile Installation:** Works seamlessly in vertical or horizontal pipelines for ultimate flexibility
- • **Premium Brass Durability:** Engineered from high-quality brass for long-lasting corrosion resistance
- • **Universal 1/2" Threaded Fit:** Standard female-to-male threading ensures easy, leak-proof connections

## Overview

The QWORK 2Pcs Brass One-way Check Valve features a robust brass construction designed to prevent backflow in pipelines. With a 1/2" female to 1/2" male NPT threaded connection, it supports both gas and liquid media under constant pressure. Suitable for vertical or horizontal installation, this valve ensures reliable, corrosion-resistant performance in water heaters, towers, and plumbing systems.

## 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 |
|---------------|-------|
| ASIN | B09LTW2ZK2 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #39,482 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #47 in Check Valves |
| Brand | QWORK |
| Color | Female to Male |
| Connector Type | Threaded |
| Customer Reviews | 4.1 4.1 out of 5 stars (174) |
| Date First Available | November 15, 2021 |
| Exterior Finish | Brass |
| Item Weight | 2.82 ounces |
| Item model number | WD5767 |
| Manufacturer | QWORK |
| Material | Brass |
| Number of Pieces | 2 |
| Package Dimensions | 4.06 x 3.78 x 1.02 inches |
| Part Number | WD5767 |
| Size | 1/2 inch - 2 pcs |
| Thread Size | 0.5 inch |
| Thread Type | NPT |
| UPC | 734900620739 |

## 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

### ⭐⭐⭐⭐⭐ 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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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-16*