5pcs Aquarium One Way Non-Return Check Valve Aquarium Air Pump Check Valve Fish Tank Fish Tank Air Pump Air Line Tube Hose System Accessories

• Compatible with standard aquarium air pipe of 4mm inner diameter.
• Made of durable plastic, small and compact, it's easy to install.
• Protect your air pump by preventing aquarium water from back siphoning during a power outage
• Place in your airline tubing between your air pump and aquarium water to prevent water returning down the air line.
• 5pcs a lot, great one way check valve for aquarium air pump.

Specifications:

• Material: Plastic
  
• Color: Black+ Transparent
• Size:
  Length: 43mm-1.69inch
  Inlet Dia: 4mm-0.16inch
  
• Qty: 5pcs/lot

Note:

• The sponges may be deformed by long time shipping, please kindly understand, it won't influence using.
• There could be some slight differences in the color tone of the pictures and the actual item.
• Please allow a little differs due to manual measurement, thanks.

Package Included:

• 5pcs x One Way Non-Return Check Valve