Jack wrote:
Hello,
Is a check valve necessary for a sump pump installation?
.
I have about 8 ft - 1 1/2" pvc pump coming up out of the pit to a 90
degree elbow which is then exiting the house. There is an 1/8" bleed
hole at the fitting near the pump. The pump is a high-output model
than is in place just for extreme emergencies. The pit has some
small holes in the bottom to assist drainage.
.
It seems like the check valve would hinder water flow. Therefore, is
a check valve necessary?
Thank you for your time.

Use the check valve. It will make the whole thing more efficient and
the pump will run less. It will not hinder the flow.

--
Joseph Meehan

Dia duit