The procedure outlined above will establish the
desired downstream pressure and provide the correct
setting of the control valve.
The ejector strainer assembly should be cleaned
at regular intervals in accordance with PMS
requirements. Remove the 3/4-inch union ring and
plug from the housing, wash in solvent, and then
blow the screen out with air. At 6-month intervals,
the regulating valve should be completely dismantled
and thoroughly cleaned. The pilot valve and control
valve should be inspected carefully for excessive
wear, and, if necessary, replaced. All gages used in
the pressure-regulating valve system are removed,
cleaned, and calibrated every 12 months. Upon
installation of new parts or repairs made on parts, all
piping connections are pressure tested to check for
leakage of fuel.
The MOGAS pumps on LPHs are centrifugal
pumps with a rated capacity of 50 gpm at 90 psi.
MOGAS pumps are typically called transfer
pumps. See chapter 4 for information of centrifugal
The Sylphon packless globe valve (fig. 6-13) is used
to stop the hazardous leakage of gasoline past the
Figure 6-13.Sylphon packless globe valve.