Hikari Airline Check Valve (2 pack)

Eliminate The Risk Of Water Siphoning Backwards Through Your Aquarium Airline!

• For use with freshwater or marine aquariums
• Eliminates the chance of water siphoning backwards through your airline and damaging your pump or causing an electrical short
• This high quality neoprene valve provides the ideal cracking pressure to reduce surging and provide a long life
• Easy to read directional arrow molded in durable plastic for permanent assistance with flow direction
• Clear window allows function verification and visible signs that replacement is necessary
• Two valves per package for about the price of one (based on competitive items)