OTC 4277 Hydraulic Flow Meter
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OTC 4277 Hydraulic Flow Meter
The OTC 4277 Hydraulic Flow Meter, 50 GPM is a rugged, accurate tool for diagnosing and commissioning hydraulic systems in agricultural, industrial, and mobile machinery. It’s engineered with a steel case, built-in loading valve, glycerin-filled pressure gauge, and an integrated thermometer to allow you to test systems under real operating conditions. The meter handles high flow (up to 54 GPM), high pressure (up to 6,000 PSI), and elevated temperatures, making it suitable for pump, valve, cylinder, and motor performance testing.
With a flow accuracy of ±4% of full scale and pressure gauge accuracy of ±1.6%, the OTC 4277 provides reliable readings so you can identify inefficiencies, internal leaks, or worn components. The bi-directional flow indicator and extra burst discs protect against overpressure events, reducing risk of fluid spills and system damage. Ideal for professional workshops, field service, and heavy equipment maintenance.
OTC 4277 Specifications
| Flow Range | 4 – 54 GPM (15 – 204 L/min) |
| Max Working Pressure | 6,000 PSI (420 bar) |
| Pressure Gauge Accuracy | ±1.6% of full scale |
| Flow Accuracy | ±4% of full scale |
| Temperature Range (Continuous / Intermittent) | Continuous to 180°F (80°C), intermittent up to 230°F (110°C) |
| Port Connections | Inlet: 1-5/16”-12 UN #16 SAE ORB; Outlet: 1-1/16”-12 UN #12 SAE ORB |
| Pressure Drop at Full Flow | Approx |