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Pump Out Adapter Threads

Posted: July 6th, 2017, 6:09 pm
by Steve KnotSane
I have a 1986 3607 aft cabin with two holding tanks - but can't seem to find a threaded adapter or pipe size to thread into the deck plate. Any idea on what size and threads they maybe?

I have tried the SeaLand Nozalls without luck. So for now I use the pressure based nozzle with shield, but it can be awkward if I am not tied up on the same side as the deck plates.

My HIN prefix is CDRT

Re: Pump Out Adapter Threads

Posted: July 6th, 2017, 7:06 pm
by tomschauer
Most boats use 1 1/2". Mine is 1 1/4". Yours is most likely the same.

Re: Pump Out Adapter Threads

Posted: July 6th, 2017, 8:15 pm
by mjk1040
Ditto!