Start with the nameplate or label
The first photograph should clearly show the brand, model, code, serial number and any pressure, flow or electrical data. If the label is damaged, take several images with side lighting and different angles.
Similar characters, dashes and suffixes often define important variants. A photograph reduces copying errors.
Photographs that help identification
- General view: the installed component and its relationship to the equipment.
- Nameplate or engraving: focused, high-resolution image.
- Hydraulic connections: number, position and apparent size.
- Electrical connection: connector, coil, stated voltage and wiring.
- Mounting: bolts, flanges, cavity or installation surface.
- Scale: include a ruler or reference when drawings are unavailable.
Describe the application
Components that look alike can have different configurations. Identify the machine in which the component operates, the motion or variable it controls and the problem that has occurred.
| Information | Useful example |
|---|---|
| Equipment | Brand, model, year and process area. |
| Function | Controls pressure, flow, direction, position or braking. |
| Condition | Leak, slow response, physical damage, electrical failure or preventive replacement. |
| Operation | Pressure, flow, temperature, fluid and duty cycle, when available. |
| Objective | Like-for-like replacement, compatible alternative, repair or redesign. |
Attach available documentation
- Data sheet or equipment manual page showing the component.
- Hydraulic diagram or partial circuit schematic.
- Previous purchase order or quotation.
- Maintenance report or failure description.
- Photographs of the new and installed component, when available.
What if the component is obsolete?
The assessment may require reviewing function, interfaces, performance and available space. A similar code does not guarantee interchangeability. Some cases have a direct replacement; others require changes to the manifold, connections, electrical control or system parameters.
Do not dismantle or work on pressurised systems without company safety procedures and competent personnel.