Hydroline Filter Gauge – GR-40 / GS-40 Differential Pressure Indicator
The Hydroline GR-40 and GS-40 are pressure differential gauge indicators for monitoring hydraulic filter condition at a glance. A green/red visual display tells operators when an element is due for replacement, reducing the risk of bypassed contamination from a blocked filter.
Key Specifications
- 40 mm diameter indicator body
- Visual models: GR-40 (return line) | GS-40 (suction line)
- Electrical models: ER (return line) | ES (suction line)
- Return line: range 0.5–8 bar | trip pressure 0.4 ±0.05 bar
- Suction line: range 0.15–8 bar | trip pressure 0.1 ±0.02 bar
- Connection: 1/8" BSPT (indicator port)
- Display: Green (serviceable) / Red (change element)
- Mounting: via indicator port on compatible Hydroline filter bodies
| Model | Type | Application | Pressure Range (bar) | Trip Pressure (bar) | Connection | Indicator Output | Diameter (mm) |
| GR-40 | Visual | Return line | 0.5–8 | 0.4 ±0.05 | 1/8" BSPT | Green/Red flag | 40 |
| GS-40 | Visual | Suction line | 0.15–8 | 0.1 ±0.02 | 1/8" BSPT | Green/Red flag | 40 |
| ER | Electrical | Return line | 0.5–8 | 0.4 ±0.05 | 1/8" BSPT | Electrical switch | 40 |
| ES | Electrical | Suction line | 0.15–8 | 0.1 ±0.02 | 1/8" BSPT | Electrical switch | 40 |
