The 90018-037 is a PRESSURE SWITCH 10-100 PSI W/ 1/2MNPT COND CONN manufactured by BLUE WHITE. This pressure switch is designed to accurately measure and control pressure within the 10-100 PSI range. With its 1/2" MNPT connection, it provides easy installation and a secure connection. Suitable for various applications, this switch ensures precise pressure control for your systems.