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Conbraco FVB Sea Flange Valves Forespar Marelon Ball Valve MF850 Groco Stainless Steel IBV Full Flo Ball Valves
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Groco Bronze IBV Full Flo Ball Valves Groco FBV Series Seacocks Groco BV Series Full-Flow Flanged Ball-Type Seacocks
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Conbraco Sea Flange Valve Handles Groco SBV-P Series Bronze Seacocks with Side Port Groco IBVF Bronze NPS to NPT Flange Adaptor
Click on product image to view and order available models. Two driver ports permit handle relocation.
NPT threaded side port accepts SSCV or any NPT threaded accessory.
Handle has square hole that accepts standard ratchet, helps access hard-to-reach valves, or ease actuation of hard-to-operate valves.
Full flow.
Serviceable while installed.
CB4400 bronze construction.
Stainless steel ball and stem.
ases have bonding attacment.
PTFE seats and seals.

  • Patented IBVF Flanged Adaptors have been developed to address several common problems in the marine industry. Here’s what they do:
  • Eliminate dangerous thread miss-match when in-line valves are screwed onto thru hull
  • Accept standard thru-hulls into the base and standard in-line valves on top.
  • Provides a safe and sturdy assembly when in-line valves are used as seacocks.
  • For OEMs, prevent valve damage during engine or generator installation - the valve can be installed later.
  • Simplifies future valve replacement
Groco BB-1 Seacock Backing Block Forespar Marelon Full-Flow Seacock with 90° Thru-Hull
  • Each size fits multiple seacock sizes.
  • Press threaded brass inserts into the hull side of the backing block into the holes that match the seacock flange.
  • Rigid 1/2" thickness provides secure installation but is flexible enough to conform to minor hull curvature.
  • Will not swell or absorb moisture.
  • Made from an environmentally friendly PVC foam specially formulated for marine applications.
  • Comes complete with a Marelon valve and properly matched mushroom head thru-hull with super strong "buttress" type threading.
  • Includes Full Flow Seacock with integrated hose connector and Mushroom Style Thru-Hull.
  • Exceeds ABYC H-27 Standards; UL approved.
  • Never corrodes - exclusive polymer formulation.
  • Includes Emergency Handle Cap Thru-Hull Plug.
  • For above or below waterline use.