Precise Adjustment: Easy-to-access adjustable superheat screw allows for field calibration to meet site-specific cooling demands

maintaining airtight integrity in high-demand environments

the York limit control utilizes a bimetallic disc for reliable snap-action switching

and larger 325-9 series vent-limited regulators

" correcting for short-cycling caused by poor thermostat placement

Johnson Controls P70AA-118 Pressure Control Els PW 17895 Precise Adjustment: Easy-to-access adjustable superheatThe Johnson Controls P70AA 118 is a professional grade single pole high pressure control designed specifically for condenser fan cycling and high side pressure management in commercial refrigeration and HVAC systems. As a veteran preferred SPST pressure switch, it features a "Close High, Open Low" action, ensuring precise head pressure control across a broad range of 100 to 400 psi. This model is the direct technical replacement for the legacy P70AA