---
product_id: 407437456
title: "2Pcs Check Valve Stainless Steel One Way Non-Return Check Valve for Aquarium Co2 System Aquarium CO2 Diffuser"
brand: "tiardey"
price: "85 Lei"
currency: RON
in_stock: true
reviews_count: 10
category: "Tiardey"
url: https://www.desertcart.ro/products/407437456-2pcs-check-valve-stainless-steel-one-way-non-return-check
store_origin: RO
region: Romania
---

# Tool-free install in seconds 4mm standard pipe fit Prevents backflow damage 2Pcs Check Valve Stainless Steel One Way Non-Return Check Valve for Aquarium Co2 System Aquarium CO2 Diffuser

**Brand:** tiardey
**Price:** 85 Lei
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your CO2 flow flawless—because your aquarium deserves the best!

## Quick Answers

- **What is this?** 2Pcs Check Valve Stainless Steel One Way Non-Return Check Valve for Aquarium Co2 System Aquarium CO2 Diffuser by tiardey
- **How much does it cost?** 85 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/407437456-2pcs-check-valve-stainless-steel-one-way-non-return-check)

## Best For

- tiardey enthusiasts

## Why This Product

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

## Key Features

- • **Backflow Barrier:** Protects your aquarium power head from damaging water reflux
- • **Space-Smart Design:** Lightweight and compact to keep your aquarium setup sleek
- • **Seamless Integration:** Fits any 4mm CO2 pipe perfectly for hassle-free setup
- • **Durable Stainless Steel:** Corrosion-resistant build ensures long-lasting aquarium safety
- • **Effortless Installation:** No tools needed—snap it in place anywhere in seconds

## Overview

This 2-piece stainless steel check valve set is engineered for aquarium CO2 systems, fitting standard 4mm internal diameter pipes. It prevents water backflow that can damage power heads during power outages. Lightweight and compact, these valves install tool-free in seconds, offering durable, corrosion-resistant protection to maintain optimal CO2 diffusion and aquarium health.

## Description

Product description 2Pcs Check Valve Stainless Steel One Way Non-Return Check Valve for Aquarium Co2 System Aquarium CO2 DiffuserProduct Description:Single check valve is lightweight, portable and space saving - It is easy to install, requires no additional tools and can be attached to any place you like in seconds.Aquarium CO2 check valve can protect the power head from the water flowing back which is caused by power cut.Easy to install, no additional tools required, can be connected to any location in seconds.Fits standard aquarium CO2 pipe(4mm) internal diameter. Suitable for CO2 supplying system in fish tank, aquarium and others.Suitable for CO2 supplying system in fish tank, aquarium and others.Specification:Color: As Pic ShownSize: ４cmPackaging includes:2 x Stainless Steel Check Valve Directions Single check valve is lightweight, portable and space saving - It is easy to install, requires no additional tools and can be attached to any place you like in seconds. Aquarium CO2 check valve can protect the power head from the water flowing back which is caused by power cut.

Review: Seems to work ok - Its doing the job
Review: Check valve - Why did you choose this product over others?: Would not air through so no goodfor intended use

## Features

- Single check valve is lightweight, portable and space saving - It is easy to install, requires no additional tools and can be attached to any place you like in seconds.
- Aquarium CO2 check valve can protect the power head from the water flowing back which is caused by power cut.
- Easy to install, no additional tools required, can be connected to any location in seconds.
- Fits standard aquarium CO2 pipe(4mm) internal diameter. Suitable for CO2 supplying system in fish tank, aquarium and others.
- Suitable for CO2 supplying system in fish tank, aquarium and others.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09PFVGDDV |
| Best Sellers Rank | 62,534 in Pet Supplies ( See Top 100 in Pet Supplies ) 374 in Aquarium Air Pump Accessories |
| Brand Name | Tiardey |
| Country Of Origin | China |
| Customer Reviews | 3.2 3.2 out of 5 stars (30) |
| Item Weight | 0.02 Kilograms |
| Manufacturer | Tiardey |
| Pet Type | Fish |
| Target Species | Fish |
| Unit Count | 2 count |

## Product Details

- **Brand:** Tiardey
- **Item weight:** 0.02 Kilograms
- **Manufacturer:** Tiardey
- **Pet Type:** Fish

## Images

![2Pcs Check Valve Stainless Steel One Way Non-Return Check Valve for Aquarium Co2 System Aquarium CO2 Diffuser - Image 1](https://m.media-amazon.com/images/I/61aaqQPnZkL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Seems to work ok
*by C***S on 7 October 2024*

Its doing the job

### ⭐ Check valve
*by L***. on 5 July 2025*

Why did you choose this product over others?: Would not air through so no goodfor intended use

### ⭐⭐⭐⭐⭐ Don’t inject CO2 without these
*by B***Y on 12 May 2024*

Very good valves

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---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-04-22*