Rol-Air 131B 131B Pilot Unloader Valve

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Model No: 131B
Website Product ID: 77025

There are few components on an air compressor that can multi-task quite like the piloted unloader valve. This single component can activate an engine idle control, divert air from the tank when it reaches the top pressure setting and can reduce oil consumption by equalizing pressure between the pump and check valve. The following blog post will help you understand the piloted unloader valve by pointing out its components, explaining how it works and describing the adjustment process.

Features

Piloted unloader valves combine a pilot valve and an unloader valve to run an air compressor continuously. While this type of valve is most commonly used on gas-powered air compressors, it can also be used on electric models. While the air compressor is running, the pilot remains closed until the pressure reaches the unload setting. When that happens, the pilot opens and pressurizes the unloader valve, causing the unloader valve to open and excess air from the compressor to vent to atmosphere. As the compressed air is used and the pressure drops to the load setting, the pilot closes and depressurizes the unloader valve. The unloader valve then closes and the pressure begins to build again and repeats the cycle.

Specifications

Includes