Welch Vacuum 1420H-02 Adapter Kit, 5 Foot

in this video we will demonstrate how to operate the vacuum and pressure regulators for welch singlehead wobble piston pumps welch singlehead wobble piston pumps can be used for either vacuum or pressure service and have vacuumed to 27.6 inches of mercury and pressure to 100 psi the pumps use air bleed type regulator valves with knobs for controlling the vacuum and pressure functions turning the knobs of the air bleed valves is how the pressure settings are controlled and varied dial gauges display the vacuum and pressure settings a valve fully opened counterclockwise is the minimum regulator setting the valve fully closed clockwise is the maximum regulator setting to demonstrate we'll turn on the pump and show how to regulate the vacuum when the valve is fully open the vacuum gauge is indicating near atmospheric pressure turning the control knob clockwise increases the vacuum as seen o