Discharge side near the pump. I've never know anyone to put a
check valve on the suction side. Always on the discharge.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
..

"Sudy Nim" wrote in message
...
Is it better to have the check valve located at the base of the
pump
near the inlet or further away on the discharge pipe above the
pump?
Also, would two check valves be of advantage, one at the base
another
a couple of feet above the base? TIA