The Graco 15A039 Air Valve Seat ensures proper sealing and air flow control in select Graco diaphragm pumps. Key points to know:
The Graco 15A039 Air Valve Seat is a critical component in the air‑valve assembly of select Graco diaphragm pumps. It provides a stable seat for the air valve and houses the O-rings that control air flow, ensuring efficient and reliable pump operation.
| Feature | Description |
|---|---|
| Part Number | 15A039 |
| Function | Provides a seat for the air valve and retains the O-rings that regulate air flow |
| Sealing | Houses O-rings to ensure proper air passage switching |
| Material | Durable precision-machined component for longevity and proper sealing |
| Maintenance | Replace when worn, cracked, or during an air-valve rebuild |
| Specification | Details |
|---|---|
| Installation | Seat is inserted or pried in using service procedure; ensure alignment with spring-locating pin |
| O-Ring Locations | Supports multiple O-rings (e.g., #43, #44, #80) to control air flow; check and replace during rebuild |
| Torque Spec | Air valve cover screws: 6 N·m (4.4 ft-lb) |
| Alignment | Air valve seat must be correctly oriented to ensure proper valve function |
