Inlet Difference; Figure 12 - Double O-Ring Inlet; Figure 13 - Single O-Ring Inlet - Graco QEN AutoPump AP4+ Operation Manual

Inlet Difference

The initial launch of the new AP4 Xtreme comes with a double o-ring inlet. If the pump has the inlet pictured in figure
13, replace both o-rings when serviced. If the pump has either inlet pictured in figure 14, only a single o-ring will need to
be replaced.

Figure 12 - Double O-Ring Inlet

Figure 13 - Single O-Ring Inlet

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