---
product_id: 475521842
title: "Feelers 1/2\" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS"
brand: "feelers"
price: "$14.72"
currency: USD
in_stock: true
reviews_count: 13
category: "Feelers"
url: https://www.desertcart.us/products/475521842-feelers-1-2-12mm-one-way-inline-check-valve-non
store_origin: US
region: United States of America
---

# 1/2" barb fits standard hose IDs perfectly Operates reliably from 25°C to 135°C PVDF material for ultimate chemical resistance Feelers 1/2" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS

**Brand:** feelers
**Price:** $14.72
**Availability:** ✅ In Stock

## Summary

> 🔧 Stop backflow, start efficiency — the valve your system deserves!

## Quick Answers

- **What is this?** Feelers 1/2" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS by feelers
- **How much does it cost?** $14.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/475521842-feelers-1-2-12mm-one-way-inline-check-valve-non)

## Best For

- feelers enthusiasts

## Why This Product

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

## Key Features

- • **Temperature Toughness:** Reliable performance across a wide temperature range (25°C to 135°C) keeps your systems running smoothly under pressure.
- • **Versatile Application:** Perfect for automotive, water treatment, air purification, and household appliances—adaptable to your professional needs.
- • **Precision Flow Control:** One-way valve design prevents backflow, ensuring seamless operation in pneumatic and fluid systems.
- • **Effortless Installation:** Pagoda card slot and clear flow direction markings make setup quick and foolproof—no guesswork needed.
- • **Corrosion-Proof Durability:** Crafted from PVDF and silicon rubber to resist acids, alkalis, and salts—built to last in harsh environments.

## Overview

The Feelers 1/2" Inline Check Valve is a high-performance, chemically resistant valve made from PVDF and silicon rubber. Designed to prevent reverse flow in air, water, and gas systems, it fits standard 1/2" hoses and operates reliably between 25°C and 135°C. Ideal for automotive, industrial, and household applications, this valve combines durability with easy installation to keep your systems leak-free and efficient.

## Description

1.The pipe port designs a pagoda card slot, non-slip, good airtightness, the port outer diameter is available in 10 sizes, suitable for 3/16“ to 1-1/2" inner hole hose to connect, user-friendly design, easy to use.2.Self-contained gas flow direction signs on the valve body for convenient installation. Avoid repeated installation and debugging work.3.Under 25 Degrees Celsius ~ 135 Degrees Celsius environment works. Reliable quality, no need to worry about high temperature damage in the cabin.4.Used in automotive system to stop backflow of gases or liquids in the piping. One-way valves are commonly used in brake boosters - air conditioning damper ducts - exhaust valve ducts and wiper sprinkler ducts on automobiles. The one-way valve is widely used and can be reasonably used according to individual needs.

Review: Works for a soap pump. - This works well for a soap pump line. It keeps the line primed and ready.
Review: Fixed my camper - 05 Rockwood. When I would turn on city water. Water would pour out the back under neath overflow. The water pump for the holding tank has an internal check valve that failed so I put this in the line and fixed it.

## Features

- 【Material】The one way check valves are made of PVDF, and the Diaphragm material is silicon rubber.
- 【Function】 These 1/2 Inch check valves are applicable for fluid systems to stop countercurrent liquids, or for pneumatic systems to prevent reverse flow of compressed air.
- 【Size】Diameter: 1/2"barb, can fit 1/2" hose ID; Total length: 43mm/1.69 inch
- 【Performance】Strong Resistance to acid, alkali, salt corrosion ability, can be used for different types of liquid.Normal performance under 25 ℃ to 60 ℃.
- 【Wide Application】Widely used in water treatment, air purification, automotive parts, machinery industry, medical equipment, household appliances and other fields.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B71FS1Z5 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #46,010 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #64 in Check Valves |
| Brand | Feelers |
| Color | 2PCS |
| Customer Reviews | 4.0 4.0 out of 5 stars (489) |
| Date First Available | July 19, 2022 |
| Exterior Finish | Rubber |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | Barb |
| Item Weight | 0.704 ounces |
| Manufacturer | Feelers |
| Material | Rubber |
| Number of Ports | 2 |
| Outlet Connection Type | Barb |
| Package Dimensions | 2.32 x 1.69 x 0.28 inches |
| Size | 0.5 Inch |
| Specification Met | ASME B16.5, ASTM F1760, ASTM D3595 |
| UPC | 756166997998 |

## Product Details

- **Brand:** Feelers
- **Exterior Finish:** Rubber
- **Inlet Connection Size:** 0.5 Inches
- **Inlet Connection Type:** Barb
- **Manufacturer:** Feelers
- **Material:** Rubber
- **Number of Ports:** 2
- **Outlet Connection Type:** Barb
- **Specification Met:** ASME B16.5, ASTM F1760, ASTM D3595
- **UPC:** 756166997998

## Images

![Feelers 1/2" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS - Image 1](https://m.media-amazon.com/images/I/31EMCdFmCkL.jpg)
![Feelers 1/2" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS - Image 2](https://m.media-amazon.com/images/I/31OchSyhdGL.jpg)
![Feelers 1/2" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS - Image 3](https://m.media-amazon.com/images/I/31jU92RGgMS.jpg)
![Feelers 1/2" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS - Image 4](https://m.media-amazon.com/images/I/31m51VoPa4L.jpg)
![Feelers 1/2" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS - Image 5](https://m.media-amazon.com/images/I/411SQXSPh9S.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works for a soap pump.
*by B***P on January 5, 2026*

This works well for a soap pump line. It keeps the line primed and ready.

### ⭐⭐⭐⭐⭐ Fixed my camper
*by F***E on December 30, 2024*

05 Rockwood. When I would turn on city water. Water would pour out the back under neath overflow. The water pump for the holding tank has an internal check valve that failed so I put this in the line and fixed it.

### ⭐⭐⭐⭐ Great price, not greatest quality
*by K***S on June 27, 2022*

The price is really good for the amount of them you receive but the the quality definitely shows for the price you pay. So if you want something more durable I recommend spending a few more but if you looking for a quick fix and quantity then this I definitely recommend:)

## Frequently Bought Together

- Feelers 1/2" (12MM) One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 2 2PCS
- 3/4 inch Check Valve, Marine Boat Bilge Pump Hose in-line one way, Non Return

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-11*