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Aqua One Check Valves - 2PK
Aqua One Flexible Check Valve - All Sizes
Aqua One Check Valve - 1PK
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Aqua One Airline Check Valve

$4.99
$4.99
Tax included. Shipping calculated at checkout.

The Aqua One Airline Check Valve is a simple yet essential safety component for aquariums, hydroponic systems, and aquaponics. Designed to prevent water from siphoning back into your air pump during power outages or pump failure, it protects your equipment and helps avoid accidental flooding. Compact and easy to install, it ensures your aeration system operates safely at all times.

Each valve fits standard 4 mm airline tubing, making it universally compatible with most air pumps and setups. Available in convenient single or twin packs, the Aqua One Check Valve is a cost-effective way to safeguard your investment while maintaining reliable oxygen delivery to fish tanks and nutrient reservoirs.

Protects Equipment
Protects Equipment
Prevents water backflow into pumps during outages
Quick & Easy Setup
Quick & Easy Setup
Simple inline installation with correct orientation
Compact Design
Compact Design
Small, lightweight valve fits neatly in any setup

A low-cost, reliable safeguard for aquariums and hydroponic aeration systems.
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Aqua One Airline Check Valve

$4.99
$4.99

Key HighlightsKey Highlights

  • Prevents back-siphoning of water into air pumps
  • Helps avoid pump damage and flooding
  • Fits 4 mm ID airline tubing (≈ 5 – 6 mm OD)
  • Suitable for aquariums and hydroponic reservoirs
  • Easy inline installation, no tools required
  • Available in single or twin packs

Directions for UseDirections for Use

  1. Cut airline tubing between the pump and air stone/device.
  2. Insert the check valve inline, ensuring correct orientation (arrow pointing toward the air stone).
  3. Reconnect tubing and test airflow.
  4. Replace if airflow becomes restricted over time.

Technical SpecificationsTechnical Specifications

  • Tubing Compatibility: 4 mm internal diameter (≈ 5 – 6 mm outer diameter)
  • Function: One-way non-return valve
  • Applications: Aquariums (coldwater, tropical, marine), hydroponic nutrient reservoirs, aquaponics

ResourcesResources

Shipping & ReturnsShipping & Returns

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at info@hydrooasis.com.au

If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at info@hydrooasis.com.au.
Aqua One Check Valves - 2PK
Aqua One Airline Check Valve

Size: 2PK

Aqua One Flexible Check Valve - All Sizes
Aqua One Check Valve - 1PK
Aqua One Check Valves - 2PK

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