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HIGH PRESSURE MOTOR VALVES REPAIR MANUAL
PISTON BALANCED INSPECTION of PARTS
PISTON ROD
Replace:
• If piston rod is bent (Fig. 1.1)
PISTON
Figure 1.1
Replace:
• If the parts present corrosion in the
outside surface (Fig. 2.1)
SEAT
Figure 2.1
Replace:
• In the presence of dings, nicks or corrosion
(Fig. 3.1)
RATIO PLUG
Figure 3.1
Replace:
• In the presence of scratches, corrosion
and wear (Fig. 4.1)
Note: This is one of the most affected
parts due to the severe impact of the particles
that flow trough the valve.
CAGE
Figure 4.1
Replace:
• If the Cage has lost its shape
(Fig. 5.1)
Note: If the valve was improperly disassembled,
there is a high possibility to
have a Cage out-of-round.
Figure 5.1
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