---
product_id: 259546978
title: "6 PCS Aquarium Air Pump Check Valves Red Clear Plastic One Way Non-Return Check Valve Fish Tank"
brand: "pawfly"
price: "€ 23.37"
currency: EUR
in_stock: true
url: https://www.desertcart.com.cy/products/259546978-6-pcs-aquarium-air-pump-check-valves-red-clear-plastic
store_origin: CY
region: Cyprus
---

# Backflow prevention One-way flow lock Durable red-clear plastic 6 PCS Aquarium Air Pump Check Valves Red Clear Plastic One Way Non-Return Check Valve Fish Tank

**Brand:** pawfly
**Price:** € 23.37
**Availability:** ✅ In Stock

## Summary

> 🔴 Keep your aquarium air flowing flawlessly—no water backflow, no worries!

## Quick Answers

- **What is this?** 6 PCS Aquarium Air Pump Check Valves Red Clear Plastic One Way Non-Return Check Valve Fish Tank by pawfly
- **How much does it cost?** € 23.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/259546978-6-pcs-aquarium-air-pump-check-valves-red-clear-plastic)

## 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

- • **Easy Maintenance:** Simply use a paperclip to clear any blockages inside the valve
- • **Secure One-Way Airflow:** Prevents water back-siphoning to protect your air pump during outages
- • **Value Pack Convenience:** Includes 6 check valves to cover multiple tanks or replacements
- • **Universal Compatibility:** Fits most common aquarium air pumps with a 4mm air hole diameter
- • **Durable & Transparent Design:** Clear plastic casing with vibrant red accents for easy monitoring

## Overview

The Pawfly 6 PCS Aquarium Air Pump Check Valves are designed to protect your aquarium air pumps by preventing water from flowing back into the tubing during power outages. Made from durable clear plastic with red accents, these one-way valves fit standard 4mm airline tubing and come in a convenient 6-pack. Easy to maintain and essential for any serious aquarist, they ensure uninterrupted oxygen supply and pump longevity.

## Description

The check valves are for common aquarium air pumps. Please DO NOT use them with CO2 system. Place in your airline tubing between your air pump and aquarium water to prevent water returning down the airline.  Be attention:Please DO NOT use them with CO2 system. Made of clear plastic. Package Weight: 0.89 oz / 25 g

## Features

- The check valves are for common aquarium air pumps. Please DO NOT use them with CO2 system. Great one way check valve for aquarium and fish tank.
- Protect you air pump by preventing aquarium water from back siphoning during a power outage.
- Made of durable clear plastic. Net weight: 0.14 oz / 4 g. Please use a paperclip to poke it from Input side to Output side when the outlet inside gets stuck.
- Air Hole Diameter: 0.15" / 4mm; Overall Size: 2.1" x 0.58" / 5.3 x 1.5 cm (L*Max.D)
- Package Content: 6 Pcs x Air Check Valve

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Red |
| Size | 6 Pack |
| connector-type | Compression |
| Material Type | Plastic |
| Power Source | Corded Electric |
| Batteries Included? | No |
| Brand | Pawfly |
| Manufacturer | Pawfly |
| Item model number | PF-Ap |
| Product Dimensions | 5.4 x 2.1 x 2.1 cm; 10 g |
| ASIN | B01N92AXHF |

## Product Details

- **Material:** Plastic
- **Brand:** Pawfly
- **Item dimensions L x W x H:** 5.4 x 2.1 x 2.1 centimeters
- **Inlet connection type:** Compression
- **Number of ports:** 2

## Images

![6 PCS Aquarium Air Pump Check Valves Red Clear Plastic One Way Non-Return Check Valve Fish Tank - Image 1](https://m.media-amazon.com/images/I/6129zPI7nfL.jpg)

## Questions & Answers

**Q: Are these ball and spring?**
A: That is not part of the description and no such assembly is visible. You would have to ask Pawfly.

**Q: does anyone know the maximum flow rate on these check valves?**
A: NO ! But they work Great

**Q: What size hose are these made for?**
A: Standard aquarium hose 3/16" ID hose will fit. Used it with  PENN PLAX Standard Airline Tubing without any problems

**Q: What type of plastic is it made of**
A: It's a hard clear good quality plastic. Successful at backflow prevention

## Frequently Bought Together

- Pawfly Aquarium Check Valves Plastic One Way Non-Return Check Valve for Fish Tank
- Penn-Plax Standard Airline Tubing for Aquariums – Clear and Flexible – Resists Kinking – Safe for Freshwater and Saltwater Fish Tanks – 25 Feet
- Pawfly Aquarium Air Stone 1 Inch, Fish Tank Air Stone Aerator Bubble Diffuser for Nano Air Pumps Small Buckets and Fish Tanks, 10 Pack

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**Shop now:** [https://www.desertcart.com.cy/products/259546978-6-pcs-aquarium-air-pump-check-valves-red-clear-plastic](https://www.desertcart.com.cy/products/259546978-6-pcs-aquarium-air-pump-check-valves-red-clear-plastic)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-20*