Groco IBVF Series Flanged Adapters (Patent Pending) were developed to eliminate the common and dangerous problem of thread mismatch when NPT Inline valves are screwed directly to NPS-threaded thru-hulls.
Provides a safe and sturdy assembly when in-line valves are used as seacocks
Eliminates thread mismatch when in-line valves are screwed onto thru-hulls
Accepts standard NPS thru-hulls into the base and standard NPT in-line valves or other components on top
Prevents valve damage during engine or generator installation – the valve can be installed later
Makes future valve replacement a simple job (can even be done in the water when plugged from the outside)