Sanborn E112732 Pressure Switch With Four Port Unloader Valve

Sanborn E112732 Pressure Switch With Four Port Unloader Valve is a Sanborn-brand compressor control that governs start/stop cycling with a 140 psi ON setting and a 175 psi OFF setting, designed to keep tank pressure within a stable range. The unit includes a four-port unloader valve that provides dedicated venting paths to unload the compressor head during shutdown, enabling a smoother restart on the next cycle. As a replacement part built by Sanborn, it is intended for air compressors that require a 140/175 psi four-port configuration, offering a compact, OEM-style solution for reliable performance in routine maintenance and service scenarios.