engineer approved™
Copyright © 2021 White Knight Fluid Handling | AGraco company
P: 435.783.6040 | support@wkuidhandling.com | https://wkuidhandling.com
Ver. 1.0.2 | 26Aug 2021
Subject to change without notice
Suction Lift
PSA140SS pumps have an initial
suction lift capacity of 3 ft. For best
results minimize suction lift.
Liquid Inlet/Outlet Connections
PSA140SS liquid ports are not
NPT nor any other standard. Use of
connectors other than those supplied
by White Knight will damage the pump
and void the warranty.
Liquid Line Restriction
PSA140SS pumps may be controlled
by closing liquid outlet lines. However,
restricting liquid supply lines increases
wear and should be avoided. Do NOT
pump against a closed liquid inlet. It
will damage the pump and void the
warranty.
Running Dry
PSA140SS pumps use the pumped
liquid to lubricate their shafts. The
pumps will cycle faster and wear more
than normal when run dry, which may
cause damage and loss of self-prime
abilities. PSA140SS pumps should
not run dry after start-up and are not
warrantied under dry run conditions.
Pulse Dampener with Shuttle Valve
Air supply pressure to PSA140SS
pumps should be at least ten psi higher
than the liquid line pressure when
using a pulsation dampener. Failure to
do so may cause erratic operation.
Cross Contamination
PSA140SS pumps use porous
material that may retain chemicals.
Take precautions to avoid cross
contamination.
2. Installation
2.1 Precautions
Handling
Do NOT lift pump by shuttle valve assembly
nor air tubing.
Installation Orientation
PSA140SS pumps must be installed in an
upright position. The check valves are actuated
by gravity and/or ow, and they will not seat if
the pump is not upright.
Timer Mode
PSA140SS pumps require an end of stroke
detection mechanism (pressure switch) to
prevent over stroking in timer mode. Operating
a PSA140SS in timer mode without stroke
detection will void the pump warranty.
Required Air Flow (Shuttle Valve)
PSA140SS pumps require 3/8 in minimum
orice with unrestricted air ow.
Required Air Flow (Solenoid Valve)
PSA140SS pumps require a 3 Cv solenoid.
Using a reduced Cv will reduce ow rates.
Using a valve with more than 20% greater
Cv will change operating parameters, reduce
pump life and void the warranty.
Under Supply of Air
PSA140SS pumps operate erratically or stall
when air supply is insucient. Ensure use
of air supply pressures higher than averaged
air consumption lines in performance charts.
Air supply lines and ttings must meet minimal
inner diameter requirements shown in the
installation instructions.
Air Supply Pressure
Operating PSA140SS pumps ~35% below max
air pressure may signicantly extend pump life.
PSA140SS pumps require 20 psi minimum air
pressure.
PSA140SS Owner’s Manual
