5pcs Air Pump Check Valve One Way Non-Return Valve Fish Tank Aquarium Water Air Pump

Feature

To prevent water backflow to damage the front end of the pump or other products and equipment

After the addition of the stop valve the pump can be placed above or below the surface of the water to prevent the risk of

Water backflow when the pump is shut off

Each outlet needs to connect a stop valve twoheaded pump needs two stop valves and so on

Description

Material Plastic

Color Blue

Overall length 36mm 142in the diameter of the middle circle 8mm031in

Two ends inner diameter 3mm012in outer diameter 4mm016in

Suitable for common air pipeinnner diameter approx 4mm016in

Note The OUT surface is air outlset and the other side is air inlet

Package Included 5PC Valves

Note
1Our size are Asian Size12 size smaller than euro sizeplease choose your size according to the size  chart

2Due to the hand measurement there have size error about 12 cmItem color displayed in photos may be showing slightly different