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Pump out on a 1990 boat.

Discussion of AC's, plumbing and sanitation related issues.
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LOTO
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Pump out on a 1990 boat.

Postby LOTO » October 19th, 2024, 4:49 am

Pump out on a 1990 boat. I heard that a 1990 and older boat has different threads on hose fitting . How do I fix this problem ?
:banghead:

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Re: Pump out on a 1990 boat.

Postby Midnightsun » October 19th, 2024, 9:22 am

Most pump out stations have an assortment of adapters. That being said, I would say the majority of boats are older than 1990 and have never heard anyone complain about this or have any difficulties at pump out stations. Why do you say it's a problem?
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Re: Pump out on a 1990 boat.

Postby km1125 » October 19th, 2024, 11:43 am

I had an 83 and it was never a problem.
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Re: Pump out on a 1990 boat.

Postby buster53 » October 19th, 2024, 12:37 pm

I’ve never screwed in any kind of fitting, although most pump out stations will have different adapters available. When I pump out, the hose has a rubber fitting cap you just hold against the pump out outlet. I think that is what most people use. I guess I could use a screw in adapter but this is just so much easier.
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Re: Pump out on a 1990 boat.

Postby plittle2005 » October 19th, 2024, 12:45 pm

In my experience, the standard adapter thread is as found in the usual Perko deck fitting.

HOWEVER....these Perko's are made from Zamac alloy and can corrode off at the hose barb, making pumpout impossible until replaced. The failure can't be seen from the deck.

Don't ask me how I know!! GRRRRRR! Perkos!
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Re: Pump out on a 1990 boat.

Postby Midnightsun » October 19th, 2024, 4:13 pm

The pump-out stations use what is called a cam lock. They have different adapters that clamp on to the hose to suit your boat, as mentioned, there is also a universal rubber funnel type that will do them all but one needs to hold it in place whereas the screw on style can just be left to pump on it's own.

I keep one of these on board in case they lose theirs. Made of polypropylene so it does not rust or scratch things up. They are only a few dollars. https://www.princessauto.com/en/poly-ma ... Id=8154361
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Re: Pump out on a 1990 boat.

Postby bud37 » October 19th, 2024, 6:00 pm

Really shouldn't be an issue.....there is one thing that could affect this, if a previous owner changed the fitting to something not correct for the waste.
The above is strictly my opinion always based on years of doing......remember to support local business , it pays back.

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Re: Pump out on a 1990 boat.

Postby tomschauer » October 19th, 2024, 8:00 pm

Maybe you are talking about thread diameter. The go to at most pump outs is 1 1/2" MIP. I had a 1988 Carver that had a 1 1/4" deck fitting. Most pump out stations, didn't have it or didn't want to take the time to look for it.
I bought my own cam lock x 1 1/4" and kept it on the boat.

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