ARO 637165-44 PTFE/Santoprene Diaphragm Pump Repair Kit
Diaphragm pump repair kit with PTFE/Santoprene diaphragm material and Teflon/PTFE check balls.
ARO 637165-44 pairs a PTFE/Santoprene diaphragm with Teflon/PTFE balls for rebuilding the wetted wear parts of an ARO diaphragm pump.
The ARO 637165-44 repair kit rebuilds the parts of an ARO (Ingersoll Rand) air-operated diaphragm pump that take the most wear. Its diaphragm material is listed as PTFE/Santoprene, and its check balls are Teflon/PTFE. A PTFE/Santoprene diaphragm typically places a chemically resistant PTFE face against the fluid, with a flexible Santoprene layer behind it to carry the flexing load.
PTFE balls are a common choice where the pumped liquid would attack rubber elastomers. An operator's manual is listed among the documents for this kit; use it to follow the correct teardown and reassembly steps.
When to Use This Kit
- Liquid shows up at the air exhaust, a sign that a diaphragm has split or cracked.
- Output falls off or prime is hard to hold even though air supply is steady.
- Inspection of the check valves turns up balls with flat spots, scoring or chips.
Our catalog has no confirmed pump fit list for the 637165-44. Before ordering, read the model and serial number off the nameplate and find the repair kit called out in that pump's parts list.
Related ARO Parts
These items are linked to this kit in our catalog:
- ARO 94616 diaphragm
- ARO 94617 diaphragm
- ARO 93358-4 PTFE ball
- ARO 93363-1 PTFE O-ring
- ARO 95910 O-ring
- ARO Y328-16 O-ring
- ARO Y328-208 O-ring
| Brand | ARO |
|---|---|
| Product Type | Kit |
| Material - Diaphragm | PTFE/Santoprene |
| Material - Balls | Teflon/PTFE |
