GLYCOL PUMP
17
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Repair Guide
STEP 21
DISCHARGE BLOCK
Replace if seats are not flush with block surface
Note: Put seats in block. Take a straight edge and lay it
across the seats. They should be close to flush with the
block surface (Fig. 21.1). If seats sit low, this may cause a
leak between block and body.
INSPECTING PARTS
Figure 21.1
Figure 22.1
Figure 23.1
STEP 22
MAIN PISTON BODY
Replace if Main Piston Body has nicks or washouts around
communicating holes (Fig. 22.1)
Repair if there is wear in the body due
to seats impact. (Fig 22.2)
NOTE: After continuous hammering of Check Valves on
discharge seats, the seats can wear the body surface.
Figure 22.2
STEP 23
SUCTION AND DISCHARGE SEATS
Replace if there is excessive wear on seats (Fig. 23.1), or
if the segments of the Collet on Suction Seat are bent, or
if Check Valve doesn’t fit freely in seats.
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