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Product Details

This patented Groco IBVF flanged adapter eliminates common (and dangerous) thread mismatches when in-line valves are screwed onto thru-hulls. They also accept standard thru-hulls into the base and standard in-line valves or other components on top.

In addition, they provide a safe and sturdy assembly when in-line valves are used as seacocks and prevent valve damage during engine or generator installation since the valve can be installed later. Finally, they make future valve replacement a simple job.

Tech Specs
Part Number Accepts NPS Thru-hull threads NPT male threads
GRO-IBVF7503/4"3/4"
GRO-IBVF10001"1"
GRO-IBVF12501-1/4"1-1/4"
GRO-IBVF1500 1-1/2" 1-1/2"
GRO-IBVF20002"2"
GRO-IBVF25002-1/2" 2-1/2"