
ARO 637303-VV Diaphragm Pump Service Kit, Viton, 3 in.
Viton service kit for the 3 in. fluid section of ARO PD30A and PD30S diaphragm pumps
ARO 637303-VV is a Viton service kit for 3 in. PD30A and PD30S fluid sections, with diaphragms, balls, cushions, U-cups, O-rings and gaskets.
Sized for the 3 in. diaphragm pump fluid section, the ARO 637303-VV serves the PD30A and PD30S pump series. Diaphragms and balls are both Viton. The spec notes list a grease package, gasket, U-cup, O-ring, cushion, diaphragm and ball.
A cushion appears in this kit where the 1 in. 637401 kits list a washer. The grease package lets you lubricate seals and O-rings as you reassemble, and the gasket restores the sealing faces you open during teardown.
When a PD30 Pump Needs This Kit
- Exhaust air carries product, a sign a diaphragm has torn.
- Output stays low even with full air supply.
- Viton balls or diaphragms show deformation or chemical attack.
Fits These ARO Pumps
- ARO PD30A-AAP-KVV-C
- ARO PD30A-AAS-FVV-C
- ARO PD30A-AAS-SVV-C
- ARO PD30S-AHS-LVV-C
- ARO PD30A-BAS-FVV-C
- ARO PD30A-BAP-KVV-C
- ARO PD30S-FSS-SVV-C
- ARO PD30A-BAP-FVV-C
Two more models complete the list of 10. Every listed pump carries the -C suffix, so check that revision letter on your nameplate.
| Brand | ARO |
|---|---|
| Product Type | Kit |
| Material - Diaphragm | Viton |
| Material - Balls | Viton |
| Notes | Service Kit (3" Diaphragm Pump Fluid Section), Includes: Grease Package; Gasket; U-Cup; O-Ring; Cushion; Diaphragm; Ball |
