Open as PDF
Model PH90Operating Procedures
Install the plunger insert into the plunger tube by
positioning the end of the insert with the beveled edge
and smaller hole to enter into the plunger tube first.
Install the plunger nut onto the plunger tube.
Install the knob o--ring into the groove provided in the
Install the plunger t ube assembly onto the plunger
assembly by inserting the plunger assembly into the
larger opening on the plunger tube. Push the plunger
assembly, compressing the spring, until the threaded
end of the stem projects through the smaller opening
on the plunger tube and the insert. (See Figure 115.)
Install the knob with the knob o--ring onto the threaded
end of the plunger assembly. Hold the plunger
assembly so that the plunger tube, compressing the
spring, is pulled toward the piston end as far as it will
go. Tighten the knob by turning it clockwise.
Lubricate and install the 1” o--r ing onto the groove
provided on the discharge tube. (See Figure 116.)
Lubricate and install the 1--5/16” o--ring into the valve
body. (See Figure 117.)
Install the discharge tube onto the smaller opening in
the valve body by aligning the flats on the discharge
tube with the locking grooves on the valve body. Push
down the discharge tube until it is seated into the valve
body opening. Turn the discharge tube clockwise to
fully engage it into locking grooves on the valve body.