SP Pump Diagnostics and Repair
B-17
Part 1128350_02
E 2020 Nordson Corporation
RemovethePressureCheckValveforDoubleActingPumps
NOTE: The pressure check valve seat is tightened to a high torque and
thread locker is applied at the factory. Nordson does not recommend
removing the pressure check valve. If it is contaminated with char or foreign
material, try cleaning it with heated solvent first.
1. Unscrew the pressure check valve seat.
2. Remove the check ball.
Special Reassembly Instructions
S Tighten the pressure check valve seat to 100 – 120 in-lbs
(11.3 – 13.6 N m).
Remove the Pressure Check Valve for Single Acting Pumps
The pressure check valve for single acting pumps is located in the filter
manifold. See figure 8-14 in Parts (Section 8).
1. Remove the pressure check valve plug (item 11 in figure 8-14).
2. Remove the following components:
- Spring (item 13 in figure 8-14)
- Guide (item 14 in figure 8-14)
- Ball (item 15 in figure 8-14)
3. Usea6mmhexkeytoremovetheseat(item17infigure8-14).Turn
counterclockwise to remove.
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