Hikari Airline Check Valves (2 pk)

The Hikari Airline Check Valves are a simple, essential piece of insurance for any air-driven aquarium setup. Each one-way valve lets air flow from your pump to the tank while blocking water from siphoning backward, protecting your air pump and preventing the electrical hazard a back-siphon can cause during a power outage. This pack includes two valves and works in both freshwater and saltwater aquariums. Browse more air pumps and accessories at Squeaky's Aquatics.

Features

• Stops back-siphoning: A high-quality neoprene valve seals when your air pump shuts off, keeping tank water from flowing back into the pump or onto the floor.
• Protects your equipment: Prevents water damage to air pumps and the electrical short risk a back-siphon can create.
• Clear housing: A see-through body lets you confirm the valve is working and spot when it is time to replace it.
• Molded flow arrow: A permanent directional arrow takes the guesswork out of installation.
• Freshwater and marine safe: Durable high-impact plastic holds up in any aquarium.
• Two per pack: Keep a spare on hand or protect two air lines at once.

How to Use

Cut your airline tubing between the air pump and the air stone, then insert a check valve so the molded arrow points away from the pump and toward the tank. As a best practice, also keep the air pump above the water line. The check valve is a reliable backup, not a substitute for good placement.

Specifications

Recommended Pairings

• Aquatop Breza Air Pump for reliable aeration
• Airline tubing, air stones, and air accessories

Frequently Asked Questions

Which way does the valve face?
The molded arrow points in the direction of airflow, away from the pump and toward the tank. Installed backward, no air will pass.

Will it work with my air pump?
Yes. It fits standard airline tubing and works with any aquarium air pump, protein skimmer, or air-driven device.

Do I still need to keep the pump above the tank?
It is still the best practice. The check valve is dependable backup protection, especially during power outages when the pump stops.