- these are "two piece" units: the thru-hull and the valve housing. The hose barb is part of the valve housing, not a threaded on "tail piece" like some other valves.
- The thru-hull uses a straight buttress style thread, which is stronger than typical a pipe thread.
- Units are a bit more compact than standard seacocks.
- Other than regular opening/closing of the valve, they require little maintenance
All MARELON® integrated valves have a removable plug in the handle (white cap with loop). This plug is made to fit into the external thru-hull (non-screened style only). In an emergency, this plug can be placed in the thru-hull (water pressure will keep it in) and the valve disassembled while the boat is in the water. Someone must get wet, but the boat does not need to be hauled for valve repairs. By tying a lanyard to the cap, you need only get wet once.This depends on how warm the water is of course (or if you got your drysuit with you). For more info see Forespar's website.
|From Building A Westsail 42: Thru-hull Installations|