

Restores accurate pressure regulation in high-flow back pressure regulators, helping maintain consistent fluid flow and system performance.
| Compatible Equipment | Application |
|---|---|
| Graco 25R457 High-Flow Back Pressure Regulators (BPR) | Diaphragm repair and fluid pressure regulation maintenance |
| Graco 25R647 High-Flow Mechanical Back Pressure Regulators (BPR) | Restores regulator sealing and pressure control performance |
| Graco Fluid Handling and Circulation Systems Using High-Flow BPRs | Maintains consistent fluid circulation and pressure management |
| Industrial Coating and Finishing Systems Equipped with Compatible BPR Assemblies | Supports reliable fluid flow and system efficiency |
The Graco 25R842 Kit, Diaphragm, Fluid, Hi Fl, Bpr is a genuine OEM repair kit designed for servicing high-flow back pressure regulators (BPRs) used in Graco fluid handling systems. The kit contains diaphragm and sealing components required to restore proper regulator operation and maintain accurate fluid pressure control.
Over time, diaphragm components can wear due to pressure cycling and exposure to coatings, adhesives, and other process fluids. Replacing these components with the Graco 25R842 kit helps maintain regulator responsiveness, reduce leakage, and support consistent system performance. The kit is specifically identified by Graco as the diaphragm repair kit for high-flow BPR models 25R457 and 25R647.
The diaphragm is a critical component within a back pressure regulator. It reacts to pressure changes and helps control fluid flow throughout the system. A worn or damaged diaphragm can lead to unstable pressure, reduced coating consistency, increased maintenance requirements, and unnecessary downtime.
| Part Number | 25R842 |
|---|---|
| Product Type | Fluid Diaphragm Repair Kit |
| Application | High-Flow Back Pressure Regulator (BPR) Service |
| Manufacturer | Graco |
| Compatible BPR Models | 25R457 and 25R647 |
| Primary Function | Pressure regulation restoration and diaphragm replacement |