Air Compressor Continuous Run Unloader

The pilot valve the vent valve and the check valve.

Air compressor continuous run unloader.

Can be applied to any 30 cfm or less electric or gas engine driven compressor. Pilot unloader valves are necessary for the proper functioning of most of the continuous run type of compressors those with motors that run all the time. Some compressors are not able to stop and start frequently enough to supply compressed air to high volume demand plant. In constant speed mode the pilot valve is in control and the compressor will run continuously as described above.

When the the air compressor unloader valve is working correctly the pressure in the tank has dropped to below the normal cut in pressure level of the pressure switch the pressure switch trips to allow power to flow through it and the motor starts. A little air bleeds from the hole all the time the compressor is running and for a few seconds after the compressor stops effectively venting air from over the small piston. Continuous run unloader control converts any pressure switch control compressor to a constant speed unloader type. Since the mark iii is a vent unloader built in compressor head unloaders are not required.

Compressor for starting or warm up with air pressure in the tank. To unload flip lever to in line position. I have a small 1 5 hp continuous run compressor and wanted to turn it into non continuous. An air compressor set up for dual control utilizes a pressure switch and a pilot valve allowing the user to switch between start stop mode and constant speed mode.

When in start stop mode the pressure switch takes over. The mark iii combines all components required for a continuous run compressor application. Be sure to return lever to operating position after starting engine or the pump will not operate at preset pressures. Built to withstand constant use in a contractor or commercial setting these compressors will work as long and as hard as you do.

A compressor with this type of unloader typically has a pressure switch that is inserted into the tank under the compressor cover and that style of switch has no place. While this type of valve is most commonly used on gas powered air compressors it can also be used on electric models. Manual knob electric dual control. Allows you to either run the unit as start stop or constant run.

Piloted unloader valves combine a pilot valve and an unloader valve to run an air compressor continuously. If you re looking for a heavy duty air compressor that can be used 8 10 hours a day a continuous duty air compressor is the right fit for you. If the cycle time between high and low air pressure set points is too frequent this increases compressor wear and can. Pilot valve check valve and suction or vent unloader valve.