9 • DP/SP Service
Doc. 065031-04 1/08 263
6. The check valves are installed in the primary pump head (see Figure 9-2).
7. Disconnect the tubing connections from the inlet and outlet check valves.
8. Using the 1/2-inch wrench (P/N 062336) provided in the Ship Kit (DP Ship
Kit, P/N 062463; SP Ship Kit, P/N 063342), loosen both check valve
assemblies.
9. Remove both check valve assemblies from the pump head.
NOTE The inlet check valve assembly housing has a 1/4-28
port; the outlet check valve assembly housing has a
smaller, 10-32 port (see Figure 9-3
).
Figure 9-2. DP/SP Check Valve Connections
Inlet Check
Valve
Outlet Check
Valve
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