ARO 637396-TA EXP Service Kit, Santoprene Diaphragm, PTFE Balls
1 in. fluid section kit for PD10P pumps with a Santoprene diaphragm, PTFE balls and a copper washer
ARO 637396-TA rebuilds a 1 in. fluid section on PD10P pumps. It teams a Santoprene diaphragm with Teflon/PTFE balls and a copper washer.
Kit 637396-TA covers the 1 in. fluid section of three PD10P double diaphragm pumps. It pairs Teflon/PTFE check balls with a Santoprene diaphragm, so the hard, slick ball material sits alongside a flexible elastomer membrane.
Its notes list these components: diaphragm, ball, O-ring, U-cup, gasket, copper washer and a grease package. Swapping all of them at once means the seals and the wear parts start fresh together after reassembly.
When to Use This Kit
- Suction lift is weaker and priming takes longer than normal.
- The PTFE balls show scoring or no longer seal against their seats.
- Product has escaped past the diaphragm into the air exhaust.
Fits These ARO Pumps
Pumps that list 637396-TA as their fluid section kit:
Two of these end in PTA and one in KTA, so check the full code on the nameplate rather than the suffix alone. Keep the grease package for the parts that the manual says to lubricate.
| Brand | ARO |
|---|---|
| Product Type | Kit |
| Material - Diaphragm | Santoprene |
| Material - Balls | Teflon/PTFE |
| Notes | Service Kit (1" Diaphragm Pump Fluid Section), Includes: Grease Package; Gasket; U-Cup; O-Ring; Copper Washer; Ball; Diaphragm |
