Used for surge block well development of 1" Sch. 40 PVC wells Built in check ball. Deeper in the socket, below the bell, are 1/4-inch female pipe threads. The 1" Qwater Well Developers can be connected to a 3/8" I.D. x 1/2" O.D. poly tubing to be used as a push rod and riser. Uses sheet metal screw to attact to tubing.
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