Gasboy Gilbarco Global Pumping Unit Operation Manual - Manual (Page 10)

Pumping Unit Operation and Maintenance Float and Air Separator
Page 6 MDE-4447A Global Pumping Unit Operation and Service Manual · May 2008
Float and Air Separator
The pumping unit eliminates air and vapor by using the air separator and float assembly. The
float assembly employed is as shown in
Figure 3-2 .
Figure 3-2: Float Assembly
Adjustable Bypass Valve
The pumping unit uses an adjustable bypass valve assembly in order to limit the pumping unit
pressure when the motor is running and no fuel is being dispensed. The adjustable bypass
assembly includes the following:
• Valve spring
• Guide
• Cover
• Adjustment screw
• Brass cap
Note: The same bypass assembly is used on all pumping units. See Figure 3-3 .
Figure 3-3: Bypass Valve
Before gasoline can be accurately measured by the meter, air and vapors must be eliminated.
IMPORTANT INFORMATION
Enlarge Top Hole to
7/16 inch
Flat Side Pointing
Away from Float