Sewer lift station--help with design and install.

[rshackleford]

I am working on designing and installing a individual sewer lift station. this will be for residential use. it will be for a single home and placed in the basement to lift all waste into a public sewer system.

what size of force main should i use?

what brand and model of pumps and sumps should i suse?

what are your recommendations?

[cwhyu2]

Do you mean sewage ejector.

[rshackleford]

if i have done any sewer work it is installing new mains. i don't know much about services. so, yes i might be talking about an ejector pump. i am talking about an individual residential sewer pump.

btw, the distance between my house and the sewer main is 800'.

[hj]

This is going service all the plumbing in the house, correct? If so, then you need;
1. A duplex pump system
2. Alternating operation
3. Second pump operation if the first one fails to operate
4. High limit both pumps on if one cannot keep up with the water inflow.
5. High limit visual and audible alarm if the water keeps rising for any reason.
6. A normally closed valve on the incoming water tied into the high water alarm to stop all water flow if the pumps are overwhelmed, or the power fails to the house. This is to prevent continued water use which would flood the basement.
7. Some indication if #'s 3 or 4 occurred so the pumps could be checked for malfunctions.

[rshackleford]

what manufacture puts together a system like this?
what size of a sump do i want to use?
what flows should i design for?
how does the length of the force main (actually force service) change things?
minimum and maximum sizing of force main (actually force service)?
grinder pump?

[tonykarns]

Allen Engineering company in Milwaukee, WI is the expert in our area for putting such systems together.

4031 W Kiehnau Ave
Milwaukee, WI 53209
(414) 353-5070

I have used them to service one of my clients that has such a system you describe. My clients system has a holding tank located outside the house that when reaches a certain level waste and liquids are, by gravity, moved into the pumping station tank. Two pumps are used and are alternated so one pump never does all the work. Both pumps are 220 volts, wired to an alarm in the house which will indicate too high of a level in the pumping station letting the home owners know that the pumps are not working. If you need any more information call Gary at Allen Engineering. Tell him Tony from Tony's Professional Remodeling sent you. Maybe he can help.

[Bob NH]

You can get the pumps and control system separately.

You can get prewired duplex control panels with all of the bells and whistles from several places. Grainger has a line of them: 4BA57, 4BA61, 4BA62, and 4BA63; where the differences are 16 or 32 Amps, and NEMA 1 or NEMA 4 enclosures.

You can then add the two pumps of whatever brand you select.

One thing to be concerned about if the municipal sewer system is a force main is that you must know the maximum pressure that the system must pump against.

We have a gravity system where I live but a few places require pumps. They use grinder pumps with 1 1/2" discharge pipes.

The flows are not really high since you have a buffer tank and you can't get a lot more water than the water system can provide.

[GrumpyPlumber]

Sizing an ejector pump is based on number of toilets vs total number of fixtures in my state.
Roughly figured at 20 gpm per toilet up to 5 toilets, then the sizing gets different (fewer gpm /toilet as the number grows), if the total number of fixtures aside from the toilets is more than 4 times the toilets, add 3 gpm per fixture over that number.

[rshackleford]

does it need to be a grinder pump or would a non clog be fine?

are these systems uncommon?

i am going into a gravity sewer. do i call my service a force service then?

[patrick88]

i am going into a gravity sewer. do i call my service a force service then?

no Gravity a forced sewer would be going up hill all or most of the way

[rshackleford]

does it need to be a grinder pump or would a non clog be fine?

are these systems uncommon?