Sump Pump hose length - how long of a hose/pipe can I safely connect to my sump pump without risk of damage or wearing it out? My current setup is that the pump, pumps up a PVC pipe (9') then out to the exterior which is 15', from the exterior I have about 30' of PVS which is sloped, then about 90' of flex sump pump hose to get the water away from the house. Am I putting too much stress on the pump?

Also, does it help to have the PVC pipe vented to prevent vapor lock or doesn't this matter?

Thank you for your help.

R.M.

That 9' of "Head" as they call it is what really matters. Head is the maximum change in verticle distance it has to pump. Anything downhill once it gets up doesn't matter. Check valves and "weep holes" have different purposes. Some pumps are designed not to like check valves.

What you don't want is the pump to have the water rush down and fill the sump when it shuts off.

Weep holes, a 1/8" hole below the water level on the discharge side is sometimes required with a check valve. This allows the discharge pipe to eventually drain.

Shallow pits cause the pump to short-cycle.

The sump pump generally doesn't fill the discharge continuously.

I doubt that you have anything to worry about. You haven't suggested that the pump has issues.

KISS nailed it with,
That 9' of "Head" as they call it is what really matters. Head is the maximum change in verticle distance it has to pump. Anything downhill once it gets up doesn't matter. You are only pumping against 3.9 PSI head pressure and if you've sloped the rest of the line you have no worries. He was bang on again with his concerns about back-wash when the pump shuts down.
What you don't want is the pump to have the water rush down and fill the sump when it shuts off. you should install a check valve at the pumps outlet so this doesn't happen. All in all, a great post by KISS that covered all bases. Good luck, Tom