10 Pcs Aquarium One-Way Air Flow Line Stainless Steel Pump Lever Control Valve for Fish Tank with 4 Non-Return Check Valves & 4 Suction Cups
Brand: Asamuyu
Package Content:

10 x one-way air flow control valve
4 x check valves
4 x suction cups
Made of stainless steel and plastic
Non return check valve is small and compact, which protect you air pump by preventing aquarium water from back siphoning during a power outage
Suction cup is easy to install and remove, each suction cup comes with a clip could stay firmly on the surface of your fish tank
Conveniently control the flow of oxygen from your pond aerator or aquarium air pump
Used in aquarium and aquaculture applications