ITEM NAME:10 pcs Non-Return One Way Check Valve CO2 Aquarium Fish Tank Air Pump C3Y4 10 pcs Non-Return One Way Check Valve CO2 Aquarium Fish Tank Air Pump C3Y4 100% Brand new and high quality one way check valve for aquarium air pump. Small and compact Protect you air pump by preventing aquarium water from back siphoning during a power outage and casing damage. Easy to install Compatible with standard aquarium air pipe of 4mm inner diameter Material:durable plastic Overall Size:53x15mm (LxW) Color:Black,Clear Quantity:10pcs Package Include:10 x One Way Check Valve
