Tetra CV4 Check Valve for Aquarium Air Pumps - One-Way Air Flow

$17.00 USD

The Tetra CV4 Check Valve is an aquarium check valve that lets air flow from your air pump into the tank while blocking water from flowing back toward the pump. It fits standard air hoses and is made for aquarium air pump setups.

It works as the connection point between your air pump and the aquarium water, helping keep the pump's air line free of water.

Key Ingredients

  • Full ingredient list on packaging

How to Use

  1. Cut the air hose from your air pump and insert one end into the check valve, arrow pointing away from the pump.
  2. Connect the other end to your air line or air stone tubing that runs into the aquarium.
  3. Place the valve above the water line so water cannot siphon back toward the pump.
  • Designed to fit standard aquarium air hoses and air pumps
  • One-way design blocks water from flowing back toward the air pump
  • Acts as a bridge between the air motor and aquarium water
  • Simple connection for quick installation

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