- 20 -
Good conditions
Unacceptable conditions
Trapped air
Trapped air
Trapped air
7. In flooded suction, install a gate valve on a suction line for easier overhaul & inspection. Keep this valve open at
any time during operation.
8. Install a flushing line for cleaning the pump after handling a harmful liquid.
9. A
suction pipe I.D. should be equal to or larger than a pump inlet I.D..
Suction lift application
10. One end of a suction line should always be at least 500 mm lower than a liquid level in a supply tank for the pre-
vention of air ingress.
11. Provide a screen in a supply tank for the prevention of foreign matter interfusion (Clean the screen periodically.).
The distance between the end of a suction line and the bottom of a suction tank should be 1.5 times wider than a
suction line I.D..
12. Be sure to install a foot valve at one end of a suction line.
Installation
