---
product_id: 78981043
title: "coralreef aqua Plastic Aquarium Check Valves Air Flow Valve CO2 Diffuser Airline Tubing Connectors Pump Accessories - Pack of 2"
brand: "coralreef aqua"
price: "$4.26"
currency: USD
in_stock: true
reviews_count: 2
category: "Pet Supplies"
url: https://www.desertcart.us/products/78981043-coralreef-aqua-plastic-aquarium-check-valves-air-flow-valve-co2
store_origin: US
region: United States of America
---

# coralreef aqua Plastic Aquarium Check Valves Air Flow Valve CO2 Diffuser Airline Tubing Connectors Pump Accessories - Pack of 2

**Brand:** coralreef aqua
**Price:** $4.26
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** coralreef aqua Plastic Aquarium Check Valves Air Flow Valve CO2 Diffuser Airline Tubing Connectors Pump Accessories - Pack of 2 by coralreef aqua
- **How much does it cost?** $4.26 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/78981043-coralreef-aqua-plastic-aquarium-check-valves-air-flow-valve-co2)

## Best For

- coralreef aqua enthusiasts

## Why This Product

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

## Description

Protect you air pump by preventing aquarium water from back siphoning during a power outage. Place in your airline tubing between your air pump and aquarium water to prevent water flowing back down the air lin tip outside diameter: 4~5mm.

## Features

- Material: plastic
- Color: as the picture show
- Size: approx 2. 17x0. 59 inch/ 55x15mm

## Images

![coralreef aqua Plastic Aquarium Check Valves Air Flow Valve CO2 Diffuser Airline Tubing Connectors Pump Accessories - Pack of 2 - Image 1](https://images-na.ssl-images-amazon.com/images/I/51Bgk2mAL7L.jpg)
![coralreef aqua Plastic Aquarium Check Valves Air Flow Valve CO2 Diffuser Airline Tubing Connectors Pump Accessories - Pack of 2 - Image 2](https://images-na.ssl-images-amazon.com/images/I/51FLsaodZCL.jpg)
![coralreef aqua Plastic Aquarium Check Valves Air Flow Valve CO2 Diffuser Airline Tubing Connectors Pump Accessories - Pack of 2 - Image 3](https://images-na.ssl-images-amazon.com/images/I/51GE6V6HufL.jpg)
![coralreef aqua Plastic Aquarium Check Valves Air Flow Valve CO2 Diffuser Airline Tubing Connectors Pump Accessories - Pack of 2 - Image 4](https://images-na.ssl-images-amazon.com/images/I/417WPVX0gML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by S***I on 21 January 2019*

I had to instal a non return valve as my air pump is below the tank level. Before connecting the air pump I had tried it out by connecting the air stone tube to the NRV and kept it throughout the day to obverse weather the valve was leaking, but it did not, the only setback here is that he inlet and/ outlet connection outer diameter are bigger than a standard size tube so i had to heat the tube and slide them into it.

### ⭐⭐⭐⭐ Only two
*by A***D on 12 June 2018*

It's in good condition though.

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**Shop now:** [https://www.desertcart.us/products/78981043-coralreef-aqua-plastic-aquarium-check-valves-air-flow-valve-co2](https://www.desertcart.us/products/78981043-coralreef-aqua-plastic-aquarium-check-valves-air-flow-valve-co2)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-18*