The Hydac ST10-4 is a high-quality test coupling designed for reliable and safe pressure monitoring and diagnostics in hydraulic and pneumatic systems. It allows for the quick and easy connection of pressure gauges, sensors, or other measuring devices without system shutdown. Featuring a robust steel construction and a protective metal cap, the ST10-4 ensures a leak-free connection even under high pressure, preventing fluid loss and contamination. Its standardized design makes it a versatile component for maintenance, troubleshooting, and system analysis across various industrial applications.