Custom Masters/Flo King
Phone: 407-331-4634
Fax: 407-331-0575

FAQ

WHAT IS THE PURPOSE OF THE WEEP HOLE ON THE FLO KING PUMP BODY?

When a Flo King pump is used without a filter cartridge or other device attached to the intake or Discharge Port, it is providing maximum flow rate. In these cases, depending on solution viscosity and other factors, liquid may be pumped a little faster than can be expelled through the pump Discharge Port. A relatively small volume of excess solution may then climb up the pump body, past the Discharge Port, and exit through the weep hole(s).

The weep hole closest to the Discharge Port is also an important indicator to check the solution level in your tank. Solution should be at least 0.5 inch (1.27 mm) above the weep hole on the Lab Series, 1 inch (2.54 cm) above the weep hole on the BX650 and BX1200, 3 inches (7.62 cm) above the lower weep hole on the BX3000 and BXL2500, and 4 inches (10 cm) above the lower weep hole on the BX5000 and BXL5000.

Explanation: As shown below, the impeller is spinning just beneath the Weep Hole and must be submerged in solution for proper priming and to prevent aeration and turbulence at the solution surface.

cutaway

• Note that the BX3000, BX5000, BXL2500 and BXL5000 models have both upper and lower weep holes, as shown in the illustration below. The Lab Series, BX650 and BX1200 have only a lower weep hole.

bx3000 drawing

If excessive solution emerges from the upper weep hole or from underneath the Motor Base, close to the motor, refer to this link.