Should I install a plain sewage pump or a "grinder" pump? It will serve a toilet, shower, and vanity. The sewer main exits my basement about 12" from the floor.

There exist:

Sewage ejector pumps used to grind and pump, uh, sewage

and

Sump pumps used to pump 'grey' water.


In your case a sewage ejector pump installed in an 'ejector pit' is the answer.

(does not show toilet but the principle is EXACTLY the same)



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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

i have good luck with liberty brand units.
a standard size ejector is all you need..
[www.libertypumps.com]

A grinder pump is more expensive and more pump than you will usually need.

hj,

are you saying a sewage ejector pump is NOT a grinder pump ?

I always thought:

ejector pump = macerator pump designed for sewage = ? grinder pump ?

==============================================

"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

unless i am wrong, a grinder pump does just what the name implies. that allows the discharge pipe to be reduced to 1 inch.
an ejector just ejects solids etc. this requires a minimum of 2 inch discharge pipe.

Most "grinders" have a blade inside the volute that actually cuts up the debris before pumping it out, almost like a blender.

hj & packy,

thanx

just did my H.W.

learn something new every day

a sewage pump may be either a macerating type (most common) or a grinder type (much more expensive and 'generally' not necessary)

we need not 'get into' outlet pipe sizes and developed pressures etc

==============================================

"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638



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