
ARO 637375-TT EXP Fluid Section Service Kit
EXP fluid section kit for ARO PD15 pumps with PTFE/Santoprene diaphragm and Teflon/PTFE balls
Fluid section service kit for ARO PD15 EXP pumps in TT trim, specified with PTFE/Santoprene diaphragms and Teflon/PTFE balls. Fits 21 pumps.
This kit targets the fluid section of ARO EXP pumps in the PD15 line. The 637375-TT variant pairs PTFE/Santoprene diaphragm material with Teflon/PTFE balls, so it belongs on PD15 models whose code ends in TT.
The fluid section is the wetted half of the pump. Diaphragms flex to draw in and push out product, and ball checks steer the flow from inlet to outlet. Renewing these wear items at once brings the pump back without replacing its housings.
When to Use This Kit
- Discharge pressure fades or the stroke rate climbs with no change in demand.
- Traces of fluid appear in the exhaust air.
- Back-flow at the inlet suggests a ball is not seating.
Fits These ARO Pumps
- ARO PD15A-AAS-STT
- ARO PD15A-BSS-STT
- ARO PD15A-BAP-STT
- ARO PD15A-ACP-ETT
- ARO PD15A-ASS-STT
- ARO PD15R-BSS-STT
- ARO PD15A-YSS-STT
- ARO PD15A-BCP-ETT
Another 13 pumps also list this kit, bringing the total to 21. Match your nameplate model to be sure.
| Brand | ARO |
|---|---|
| Product Type | Kit |
| Material - Diaphragm | PTFE/Santoprene |
| Material - Balls | Teflon/PTFE |
