After the addition of the stop for, the can be placed or below the surface of the water to the risk of water backflow when the is shut off Package Content: one-way check valves Note: Please be sure to connect the end with " OUT " to the end near the air stone To water backflow to damage the front end of the or other products and equipment Each outlet needs to connect a stop for, two-headed needs two stop valves, and so on, Manufacturer: kmgfsd
After the addition of the stop for, the can be placed or below the surface of the water to the risk of water backflow when the is shut off Package Content: one-way check valves Note: Please be sure to connect the end with " OUT " to the end near the air stone To water backflow to damage the front end of the or other products and equipment Each outlet needs to connect a stop for, two-headed needs two stop valves, and so on, Manufacturer: kmgfsd
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