PC200_Manual_REV_G-1.pdf - 第23页

PC200 PVA Revis ion G (201 9) 23 of 56 Assembl e the Valve This sec tion shows h ow to asse mble PC200 series valves (St and ard PC200R p roces s is shown). Some installation steps tha t involve rods, lip seals, sle eve …

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PC200
PVA
Revision G (2019)
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5. Clean the fluid section.
6. Use a pick to remove large amounts of material. Do not mix the materials.
7. Use solvent as necessary to clean hard to get to locations.
Figure 28: Clean the Fluid Section
8. Clean the separation block and manifold. Make sure to clean all grooves and
ports.
9. Clean the piston-rod assembly.
NOTE: RW-series PC200 uses two different size rods.
10. Clean the rods.
11. Use a wrench to hold one rod and a use hex key to loosen the screw that
holds the rod in position in the piston.
12. Remove both rods. Examine the rods and make sure there is no material on
them. Clean the screws if necessary.
13. Use the hook and pick set to remove the O-ring on the piston.
14. Clean the piston and the O-ring.
Figure 29: Clean the Piston-Rod Assembly
PC200
PVA
Revision G (2019)
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Assemble the Valve
This section shows how to assemble PC200 series valves (Standard PC200R process
is shown).
Some installation steps that involve rods, lip seals, sleeve bearings, and O-rings will
differ between the R and RW series of the PC200. Not all options are shown. Valve
series are closely related. When procedures are different from what is shown, “Notes”
are given. If you have questions about procedure steps, parts, or content, contact PVA’s
customer service department.
Procedure
1. Apply removable thread lock to a machine screw.
2. Put the screw with thread lock in the piston.
3. Put a rod in into the countersunk side of the piston.
Figure 30: Install Screw in the Piston-Rod Assembly
4. Use a 3/16” wrench (or an adjustable wrench) on the flats of each rod to hold
them in place and tighten the screw with a 7/64” hex key. The screw will
engage the rod.
5. Repeat steps 1-4 for the second rod and machine screw.
Figure 31: Rods and Piston
NOTE: RW-series PC200 uses two different size rods.
PC200
PVA
Revision G (2019)
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Figure 32: Tighten Rods
NOTE: Make sure the rods are tight and cannot turn freely by hand.
6. Put the 123 Buna O-ring on the piston.
Figure 33: Put the O-ring on the Piston
7. Align the sleeve bearings with the two holes in the top of the separation
block.
8. Use a press to push the sleeve bearings into the bottom holes of the
separation block until they are flush with the bottom of the block.
Figure 34: Sleeve Bearings Installed in the Separation Block
Note: RW-series PC200 uses two different size sleeve bearings.
9. Use your hands to push two lip seals (Teflon® seals shown), O-ring side up,
into the seal plate holes. Do not to damage them.
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