Air tends to go to the point of least resistance, so if one airstone is shallower than others are, or has a shorter air line, it will get the majority of the air. Selector Valves allow you to regulate the airflow. The folks at Outdoor Water Solutions use high-quality brass ball valves, which are designed to stand up to-years of use. 1/2" male fittings where polytubing attaches. Made in U.S.A.
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Please Note: This item is shipped directly from the factory. To see the expected shipping date, please add it to your Shopping Cart. Sorry, no express shipping available. We are unable to ship factory direct items to Alaska, Hawaii, Puerto Rico or APO or FPO addresses.
Outdoor Water Solutions® 3-way Selector Valve
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