The SIP 1/4" 4-Way Pressure Switch is an important component for any air compressor, helping to maintain the proper pressure level demanded by the operator and air-powered equipment. This is achieved by starting the compressor motor when the pressure is lower, and stopping it when the required pressure is reached.This easy-to-install switch offers 3x 1/4" BSP ports and adjustable cut-off pressure.• 1/4" 4-way pressure switch with 3x 1/4" BSP ports• Easily adjustable cut-off pressure via built-in switch• Designed to start and stop electric compressor motors• Manufactured for long-lasting and reliable use• Integrated bleed facility with 6mm pipe entry