---
product_id: 156247093
title: "CV6C"
brand: "pawfly"
price: "€ 10.59"
currency: EUR
in_stock: true
reviews_count: 13
category: "Pawfly"
url: https://www.desertcart.be/products/156247093-cv6c
store_origin: BE
region: Belgium
---

# prevents water backflow 1-way airflow control quiet, noise-free operation CV6C

**Brand:** pawfly
**Price:** € 10.59
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** CV6C by pawfly
- **How much does it cost?** € 10.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/156247093-cv6c)

## 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

Aquarium Air Pump Check Valves Red/Clear Clear Plastic One Way Non-Return Check Valve for Fish Tank

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: Just like describe - They work just fine

## 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 | #7,116 in Pet Supplies ( See Top 100 in Pet Supplies ) #5 in Aquarium Air Pump Accessories |
| Brand Name | Pawfly |
| Connector Type | Barb |
| Customer Reviews | 4.5 4.5 out of 5 stars (5,454) |
| Exterior Finish | Plastic |
| Inlet Connection Type | Barb |
| Item Weight | 0.1 Ounces |
| Manufacturer | Pawfly |
| Material Type | Plastic |
| Maximum Pressure | 1 Atmosphere |
| Model Number | 652811966169 |
| Number of Ports | 12 |
| 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

![CV6C - Image 1](https://m.media-amazon.com/images/I/61S7t84MobL.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.

### ⭐⭐⭐⭐⭐ Just like describe
*by A***R on March 1, 2026*

They work just fine

### ⭐⭐⭐⭐ 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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**Shop now:** [https://www.desertcart.be/products/156247093-cv6c](https://www.desertcart.be/products/156247093-cv6c)

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-05-14*