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PLDConsulting · Jan 18, 2010, 12:01 PM

I have a new house, in the basement, the builder stubbed out for a bathroom. They also installed a Basin for a sewer ejection pump under the stairs (the main sewer line from the stubbed downstairs bathroom terminates into this basin.) The builder also installed a vent pipe up and out through the roof, they however did not connect this to the basin.

Question 1: there are Qty 2 2" pipes coming out of the basin. One will be for the vent stack and the other for the connection to the sewer line (with a gate valve and a check valve installed). Does it matter which 2" pipe I use for the sewer connection pipe?

Question 2: To reach the sewer line from the basin, I have to go vertical up 5' make a 45 degree turn go diagonally up for 6 feet make another 45 degrees turn, then go horizontal for 11 feet. Because of the position of my sewer line, I will need to install a connector piece that is a 4" to 2" 45 degree connector (if they make such a thing). My question is, is this too far for the ejector pump? Are the (3) 45 degree turns an issue?

Thank you for your help with this

Paul

massplumber2008 · Jan 18, 2010, 12:18 PM

Hi Paul:

Very important which 2" pipe you connect onto as one is attached to the pump and the other simply acts as a vent. The pipe for the pump goes through the ejector lid and connects to the pump. The vent connection typically screws into the lid/cover of the ejector pit.

You want to install the gate valve and check valve for sure and then run that pipe up as high as possible so that the remaining piping pitches back from the pit toward the drain so the waste from the ejector can drain by gravity. The pump pumps all up, but the waste still wants to drain by gravity to the main drain connection. The 45s are no issue as long as the pipe pitches as described.

Back to you...

MARK

PLDConsulting · Jan 18, 2010, 12:40 PM

Mark,

Thank you so much for your reply. I do not yet have a pump installed. The basin has 2 exactly placed holes (distance from the side of the basin) with 2 temporary 2" pipes placed in the holes. The reason for my question is that one of the holes is directly under the center support for my stairs. If I had to use this hole for the sewer I would have to install a setoff connector to get it to align with the path I will take to the main sewer line. The other hole lines up directly in the path I will take to get to the sewer line.

I also assume that the gate valve and check valve should be installed in the horizontal section correct? This will be the section with the slight pitch.

Also, any recommendations on a pump (pump size). This will support a full bath (tub/shower, sink, and toilette) as well as a utility sink and possibly a washing machine?

Paul

massplumber2008 · Jan 18, 2010, 01:22 PM

Zoeller pump is the best pump... hands down! Check them out at www.zoeller.com You want the 2" discharge sewage ejector. This is what is used for all basement ejector systems.

You should be able to unscrew the bolts holding the lid and move the lid around to line things up the way you want the pipes to line up. Just be sure that you have a nice tight seal to the ejector basin when you tighten all this down as these systems will leak sewer gasses pretty easily. I also recommend that you take silicone and seal around the pipes... just as a back up on sewer gasses. Once the pump is placed into the pit you should be able to align the lid the way that works best for you.

And the gate valve and the check valve are best installed on the vertical piping if possible. If not, these can be installed on a 45 degree angle or even the horizontal but you will need to be sure to orient the check valve so it closes properly.

MARK

PLDConsulting · Jan 19, 2010, 06:58 AM

Mark,

Yes the vertical placement make much more sense. All the diagrams I have seen show it installed horizontal, go figure...

What model would be best, the M264 or M267. Would the M264 work (cheaper)?

Once again, thank you for your help, and the willingness to take the time to explain things.

Paul

massplumber2008 · Jan 20, 2010, 07:02 AM

Hi PLD...

Some people prefer the check valve to be horizontal as it can reduce the slam of the check valve flapper, but it can also clog pretty easily on the horizontal.. Stick with it on the vertcial... never been an issue for me as I HANG my pipes correctly... *hint hint*.

The M264 has a .4 HP motor and the M267 has a .5 HP motor.

I only install the M267... here is NOT the place to skimp on horsepower... :)

Good luck!

MARK