Flowtech free-flow sea valves incorporate the valve body, thru-hull and three sizes of hose pipe connections in one set. 3/4", 1" and 1-1/2" hose barbs are included. The Flowtech valve pipe can be faired smooth to the outer hull surface so that when the valve is closed, the internal plunger and valve creates a flush, fair and fast outer surface. Made of highly durable, non-corroding Marelon.
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