ARO 637140-33 Kit Assembly, Viton Diaphragm and Viton Balls
Kit assembly with a Viton diaphragm and Viton check balls for 666057, 66605J and 66605K pumps
ARO 637140-33 is a kit assembly with Viton as the diaphragm and ball material. It matches three ARO double diaphragm pumps in our catalog.
Kit assembly 637140-33 from ARO (Ingersoll Rand) is the all-Viton choice in the 637140 kit line. Both the diaphragm and the check balls are Viton, a fluoroelastomer, so the two main soft parts touching your fluid share one material.
In service, the diaphragm acts as a moving wall between the air chamber and the fluid chamber. The balls work as one-way checks at the inlet and outlet. No pump size or parts count is listed for this kit, so use the parts manual for your pump to see which items it replaces.
When to Use This Kit
- A diaphragm has torn and the exhaust is spitting product.
- Balls look swollen, flattened or pitted, so the valves no longer close fully.
- Stroke rate climbs while delivered volume drops.
Fits These ARO Pumps
Three pumps in our catalog call for 637140-33 in their parts lists:
If your nameplate shows a model that is not here, open that pump page to find the kit it uses.
| Brand | ARO |
|---|---|
| Product Type | Kit |
| Material - Diaphragm | Viton |
| Material - Balls | Viton |
