Description
Package include : 15 pcs of check valve ; Suitable hose : 3/16” standard airline tubing ; Use : Connected in series between air tubing and air stone to prevent the backflow of water. Installation attention : Outlet direction is marked on the valve,please pay attention when you install them. Package include : 15 pcs of check valve ; Suitable hose : 3/16” standard airline tubing ; Use : Connected in series between air tubing and air stone to prevent the backflow of water.
