Nova-Tech LMI Series AA-B-C-E-J-P Metering Pumps - Manual (Page 20)

20
Pump models equipped with high-viscosity liquid ends are not
equipped with foot valves. Flooded suction is recommended. A 1/2"
NPT connector is included for flooded suction installations.
The ceramic weight, when installed, positions the foot valve in a
vertical position.
1. Attach the foot valve to one end of the suction tubing (see
Tubing Connections, Section 4.3).
2. Slide the ceramic weight over the tubing end until it contacts
the top of the foot valve coupling nut.
3. Place foot valve and tubing into the solution tank. Check that
the foot valve is vertical and approximately 2 inches (50 mm)
from the bottom of the tank or drum (see illustration). Connect
the other end of the tubing to the suction side of the pump
head (bottom side) (see Tubing Connections, Section 4.3).
Proper Foot Valve Position
LMI
Pump
Use Ceramic
Weight
Foot Valve
Must Remain
Vertical
Foot Valve
Tilted Sideways WILL NOT PRIME
INCORRECT
2.0 in. (50 mm)
for Sediment Accumulation
CORRECT
LMI
Pump
4.7 Foot Valve/Suction Tubing Installation
The Foot Valve acts as a check valve to keep the pump primed
in suction lift applications.
The foot valve is designed to be submersed in the solution tank
or drum and must sit in a vertical position at the bottom. Position
approximately 2 inches (50 mm) off the bottom if the tank or
drum contains sediment.