What is the function of inlet and outlet valve in a dead weight tester?

In a dead weight tester, the inlet valve allows the introduction of pressure from the test medium (such as air or oil) into the system, while the outlet valve enables the release of this pressure. The inlet valve helps to maintain the desired pressure level for calibration, ensuring accurate readings. Conversely, the outlet valve is crucial for venting excess pressure or for safely releasing the medium when adjustments or maintenance are needed. Together, they facilitate precise control and measurement of pressure during testing.