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