Holding Tank Plumbing

[coopec43]

I am about to start on the holding tank plumbing.

I have a deck outlet for discharge at the marina with a black nylon screw-in terminal (see photo)

The macerator empties the toilet bowl and discharges it into the holding tank (No "Y" valve). A manual bilge pump empties the holding tank.

My questions are:

• What diameter tank vent tube?
• Is there any objection to exiting the vent tube through the side of the yacht?

[ranger58sb]

See posts by Peggie Hall (PegHall here, HeadMistress on trawlerforum)...

Usually sanitation hoses for effluent are 1½" and I think she recommends vent hoses be 1" minimum.

Venting out thru the hull, perhaps 6" below a rub rail, is quite common.

-Chris

[coopec43]

Originally Posted by ranger42c

See posts by Peggie Hall (PegHall here, HeadMistress on trawlerforum)...

Usually sanitation hoses for effluent are 1½" and I think she recommends vent hoses be 1" minimum.

Venting out thru the hull, perhaps 6" below a rub rail, is quite common.

-Chris

Thanks Chris.

The hoses for the effluent are 1½ in and I make the vent hose 1".