HOSE FITTINGS/ADAPTORS

[Sailboattraitor]

In my present set-up, I have a 1 1/2 inch sanitation hose leading from my holding tank to my macerator pump intake port. There is a 1 inch hose attached to the 1 inch outlet port on the macerator from which the waste is pumped overboard. I am thinking about replacing my macerator pump with a diaphram-type waste pump. However, all models that I see have both a 1 1/2 inch intake port AND a 1 1/2 inch outlet port or both a 1 inch intake port AND a 1 inch outlet port. Without changing either my 1 inch discharge hose or my 1 1/2 inch intake hose, is there some sort of fitting or adaptor that I can use to increase or decrease the end of one of my hoses in order to allow it to fit on a new pump? Thanks in advance for any info or suggestions.

 

[sugilbert]

Sure. Any decently stocked plumbing supply store or large box hardware superstore. It's only when you need metrics that it gets "hairy".

 

[Vic Willman]

Tom, the diaphragm-type waste pumps do not macerate the waste, they just move it. So I can't recommend reducing the output line from the pump from 1½" to 1" - there's just too much chance for a clog. If you want to go with the diaphragm pump, it would be best to put in a 1½" through-hull fitting and run the correct 1½" I.D. hose to it. It's more involved, and more expensive, but you'll be avoiding a number of potential headaches. The diaphragm-type waste pumps are much more reliable and trouble-free than the conventional rubber impeller macerator pumps.