ARO 637440-2 Dual Inlet/Outlet Kit for Diaphragm Pumps

The ARO 637440-2 is the dash-2 version of the 637440 dual inlet/outlet kit from ARO (Ingersoll Rand). It is matched to 41 pump parts lists in our catalog, mostly PW20P-YPS and PD20P-YPS models.

On an air-operated double diaphragm pump, a dual inlet/outlet setup gives each chamber its own suction and discharge port, so one pump can move two separate fluids. Our data does not list what ships in the kit or its materials. Match the -2 suffix to your pump's parts list before you order.

When to Use This Kit

• You plan to run two separate fluid streams through one PD20P or PW20P pump.
• The existing dual-port connections on your pump leak or show cracks.
• Your pump's parts list names 637440-2 instead of another dash number.

Fits These ARO Pumps

• ARO PW20P-YPS-PTT
• ARO PW20P-YPS-PAA
• ARO PW20P-YPS-PTL
• ARO PW20P-YPS-KTL
• ARO PW20P-YPS-KTT
• ARO PD20P-YPS-KTL
• ARO PD20P-YPS-KTT
• ARO PD20P-YPS-PAA

That is 8 of the 41 matched pumps; 33 more models also list this kit.