The SIP 3/8" 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 port and adjustable cut-off pressure. � 3/8" 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