---
product_id: 156247093
title: "Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank"
brand: "pawfly"
price: "£5.51"
currency: GBP
in_stock: true
reviews_count: 13
category: "Pawfly"
url: https://www.desertcart.co.uk/products/156247093-pawfly-aquarium-check-valves-plastic-one-way-non-return-check
store_origin: GB
region: United Kingdom
---

# prevents water backflow 1-way airflow control quiet, noise-free operation Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank

**Brand:** pawfly
**Price:** £5.51
**Availability:** ✅ In Stock

## Summary

> 🐠 Keep your tank thriving with zero backflow – the silent guardian your fish deserve!

## Quick Answers

- **What is this?** Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank by pawfly
- **How much does it cost?** £5.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/156247093-pawfly-aquarium-check-valves-plastic-one-way-non-return-check)

## Best For

- pawfly enthusiasts

## Why This Product

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

## Key Features

- • **Silent Operation 🔇:** Operates quietly to maintain a peaceful environment for both you and your aquatic pets.
- • **Durable Plastic Build 🔧:** Engineered for long-lasting, leak-proof performance that withstands daily use and power outages.
- • **Seamless One-Way Airflow 💨:** Ensures oxygen pumps deliver uninterrupted air without backflow, protecting your aquatic ecosystem.
- • **Compact & Lightweight Design 🐟:** At just 2.1" x 0.55" and 0.1 oz, it integrates effortlessly into any aquarium setup without bulk.
- • **Easy Maintenance & Compatibility 🧼:** Simple to clean and fits standard 3/16" airline tubing, making upkeep hassle-free.

## Overview

The Pawfly Aquarium Check Valve is a compact, durable plastic one-way valve designed exclusively for oxygen air pumps in fish tanks. It prevents water backflow during power outages or pump pauses, ensuring smooth, quiet airflow through standard 3/16" airline tubing. Lightweight and easy to maintain, it safeguards your aquatic environment from damage caused by reverse water flow.

## Description

Product description White 1-Way Check Valves Pawfly specializes in all must-haves of aquarium accessories such as air pumps, air stones, sponge filters, fish nets, cleaning brushes and other accessories to set up your aquariums. Water backflow will always happen when the pump is turned off or the power source is interrupted. It’ll stop oxygen supplement and, worst of all, damage your air pump. The non-return check valves are necessities in the house of aquatic lovers. Made of plastic and designed to fit most common aquarium air pumps, the valves can effectively prevent water from back siphoning and ensure smooth airflow. Essential for the most meticulous aeration setup in your fish tanks. For oxygen systems only Fit standard 3/16" tubing No restriction of airflow Sturdy and aging-resistant No air leak or noise Packed with 6 Pcs in total How to Install 1. Before use, clean and dry the 2 ends of the tubing which is connected to the valve to ensure tight connection. 2. Check the right direction of the valve to make sure that it is consistent with the direction of air flow. 3. Insert the check valve into the tubing carefully and link them completely. Tips: If the valve restricts air flow in both directions, please stick something into the hole on the inlet side of the valve to poke it open. And then the valve will allow for an unobstructed passageway for airflow. Great Pump Protectors Effectively prevent water backflow caused by a sudden power outage. Ideally safeguard your air pump and reduce your losses when you’re at work or on vacation. Fit 3/16" Airline Tubing Perfectly match standard 3/16"hoses. Optimal for oxygen systems in your aquariums or fish tanks. DO NOT place them in CO2 or other high-pressure systems. Dependable Construction Use hard clear plastic which allows for smooth airflow with no restriction, air leak or noise. Reliable material to keep your fish healthy and endure long-time use.

Review: Great quality check valves - Great quality check valves for a really reasonable price. Not much to these. Worked great for fixing my Keurig 2.0 K200 coffee maker which had a damaged air pump (very common problem I learned). Replaced the air pump and tested operation. Worked great but noticed water was being pushed into it, which is what caused it to fail the first time. Added one of these check valves in line and life is great now. Shame on Keurig for planned obsolescence.
Review: Best valves available. - Here is an honest review from a verified purchase. I have been keeping aquariums for 40 years. These are among the best valves I’ve had. They work perfectly. Any review that says otherwise was written by someone that doesn’t know what they are doing or they were using them wrong. Simply slide a paper clip or toothpick into the opening and gently open the valve before connecting. After all you want a good seal to avoid water back flow. The air has air flows beautifully. They are easy to connect using some warm water on the tubing. They have nubs to keep the hose on. These are great valves. Don’t pay attention to negative reviews.

## Features

- For Oxygen Pumps Only: Great 1-way check valve for most common aquarium air pumps. NOT suitable for CO2 or other high-pressure systems to avoid crack and leak.
- Small & Light: Size: 2.1" L x 0.55" W; Diameter of air holes: 0.12"; Weight: 0.1 oz. Standard ID airline tubing: 3/16". Add little weight to your hose for smooth airflow.
- Ideal Pump Protectors: Prevent backflow of water through the tubing during a power outage or pump pause. Essential accessories for basic aeration setup in your fish tanks.
- Sturdy & Quiet: Made of reliable plastic which can be tightly connected to the hose without air leak. The check valves can endure long-time use without making noise.
- Easy Maintenance: Clean the valve regularly. Please poke it with a slim stick from the inlet side to push it open when it gets clogged inside and restricts air flow.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VWQXRZT |
| Best Sellers Rank | #7,976 in Pet Supplies ( See Top 100 in Pet Supplies ) #5 in Aquarium Air Pump Accessories |
| Brand | Pawfly |
| Brand Name | Pawfly |
| Connector Type | Barb |
| Customer Reviews | 4.5 out of 5 stars 5,477 Reviews |
| Exterior Finish | Plastic |
| Inlet Connection Type | Barb |
| Item Weight | 0.1 Ounces |
| Manufacturer | Pawfly |
| Material | Plastic |
| Material Type | Plastic |
| Maximum Operating Pressure | 1 Atmosphere |
| Maximum Pressure | 1 Atmosphere |
| Model Number | 652811966169 |
| Number of Ports | 12 |
| Set Name | 6 Pack |
| Size | 2.1" L x 0.55" W |
| UPC | 652811966169 |
| Unit Count | 6.0 Count |
| Valve Type | Check Valve |

## Product Details

- **Brand:** Pawfly
- **Exterior Finish:** Plastic
- **Inlet Connection Type:** Barb
- **Manufacturer:** Pawfly
- **Material:** Plastic
- **Maximum Operating Pressure:** 1 Atmosphere
- **Number of Ports:** 12
- **UPC:** 652811966169

## Images

![Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank - Image 1](https://m.media-amazon.com/images/I/61S7t84MobL.jpg)
![Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank - Image 2](https://m.media-amazon.com/images/I/61RQnSAdzrL.jpg)
![Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank - Image 3](https://m.media-amazon.com/images/I/71TfbGnj62L.jpg)
![Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank - Image 4](https://m.media-amazon.com/images/I/61gxvlWRVZL.jpg)
![Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank - Image 5](https://m.media-amazon.com/images/I/6125SjJ8s5L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality check valves
*by B***V on January 2, 2026*

Great quality check valves for a really reasonable price. Not much to these. Worked great for fixing my Keurig 2.0 K200 coffee maker which had a damaged air pump (very common problem I learned). Replaced the air pump and tested operation. Worked great but noticed water was being pushed into it, which is what caused it to fail the first time. Added one of these check valves in line and life is great now. Shame on Keurig for planned obsolescence.

### ⭐⭐⭐⭐⭐ Best valves available.
*by C***C on May 29, 2025*

Here is an honest review from a verified purchase. I have been keeping aquariums for 40 years. These are among the best valves I’ve had. They work perfectly. Any review that says otherwise was written by someone that doesn’t know what they are doing or they were using them wrong. Simply slide a paper clip or toothpick into the opening and gently open the valve before connecting. After all you want a good seal to avoid water back flow. The air has air flows beautifully. They are easy to connect using some warm water on the tubing. They have nubs to keep the hose on. These are great valves. Don’t pay attention to negative reviews.

### ⭐⭐⭐⭐ Works effectively but the hoses slip off over time.
*by B***H on July 13, 2025*

The airflow control works just fine but due to the smooth tapered connectors, the hoses constantly slide off. I had to superglue the hose onto it

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-10*