ARO 637440-3 Dual Inlet/Outlet Kit

Part 637440-3 is the dash-3 entry in ARO's 637440 line of dual inlet/outlet kits. Product data on file does not explain how dash-3 differs from the other suffixes, so treat the number printed in your pump manual as the deciding detail.

With a dual inlet/outlet arrangement, the two diaphragm chambers draw and discharge through separate connections instead of shared manifolds. That allows a single pump to handle two liquids at the same time. This kit is called out in 41 ARO parts lists, among them the 2-inch non-metallic EXP Series PD20P-YPS-KTT.

Signs You Need the -3 Kit

• Your PD20P-YPS or PW20P-YPS manual calls for the dash-3 suffix.
• Two products need to be moved by one pump without mixing.
• Fluid weeps from the split inlet or outlet ports during operation.

ARO Pumps That List 637440-3

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

Another 33 ARO pump models outside this sample use it as well.