Please visit Prince Manufacturing Corporations YouTube Channel to view the video of these guidelines.
Click HERE to see our SV (12 gpm) and Series 20 (20 gpm) Stack Valve features.
SV Parts Manuals and Catalog pages to see both manual and solenoid operated.
Series 20 Parts Manuals and Catalog pages to see both manual and solenoid operated.
Make sure the environment is clean. Avoid areas near grinding or even dusty
areas.
Use a clean table that is free of dust and debris. The tools should be clean.
Leave the parts and sections in their plastic bags until
you are ready for them.
Gather and organize the parts needed for the assembly.
This will include:
An inlet
and an outlet casting
The
work sections. There can be up to 10 of
these per valve bank
The handle kit (one handle per work section)
The tie
rods kit
And the
o-rings.
Inspect the ground mating surfaces making sure they are
free of burrs or outward protrusions.
They must be free of scratches or dings in the mating
areas of the o-rings.
You’ll notice a light film of hydraulic oil on these
sections. It remains on the sections
because each valve is tested in our quality control program. That film keeps the metal in ideal condition
during shipping and should remain during assembly.
Lay the sections down, grooves up.
Put the o-rings in place after dipping each one in the
hydraulic fluid that resides in these plastic bags. This gives them a light oil film of
lubrication.
Pinched o-rings will cause leakage so make sure they are
fully seated. There are typically 4 o-rings for each grooved section;
for the SV family the larger o-ring goes in the round center groove and one of
the smaller rings is re-oriented to fit in the “race track” groove. The Series 20 family has orings of uniform
size. There may be extra orings in the
kits you receive.
Thread nuts on one end of the tie rods, leaving
approximately a quarter inch of threads extending from the nut and place lock
washers inside the nuts.
Insert the tie rods through the inlet casting holes or
the outlet casting holes…
depending on if you are assembling a Series 20 valve or
an SV model, then place that cover section on the table like this…
with the o-rings facing up. The grooves are on the Inlet Side of the
Series 20 sections and on the downstream side of the SV family.
Repeat the o-ring steps for one work section at a
time. Do not use grease or any lubricant
other than the hydraulic oil as that could cause leaking.
Lift the work sections and place them over the tie rods,
making sure the o-rings face up and make contact with a flat surface, avoiding
o-ring to o-ring contact.
After all work sections have been added, slide the inlet
or the outlet section over the tie rods with the threaded ports facing up.
Place lock washers on the tie rods, then lightly snug up the
nuts by hand.
Rotate the assembly to a horizontal position. In order to keep it level, place a spacer
block under the front edge of the inlet casting. Using a torque wrench on one end and a socket wrench on
the other, lightly tighten all three tie rods to about two-thirds torque.
Now you’re ready to progressively tighten the tie rod
nuts to 12 and a half foot pounds of torque on the 3rd and final
pass. (The Series 20 family of valves is tightened to 30 – 32 ft.-lbs.)
The handle assembly merely requires aligning the
holes…and inserting the bolts and a cotter key.
Use the handles or a handle fixture to shift all spools
fully in and out…making sure there is no binding.
If a spool binds or for spring-center operators, does not
return to center with spring force, loosen the nuts to about 1/3 torque and re-torque
progressively in two passes. If it still
binds you probably have a pinched o-ring or contamination between sections.
Sectional valves from Prince Manufacturing
Corporation…delivering to your bottom line through standard products and
customized solutions. Be sure to visit
our website www.princehyd.com
