Description
The Johnson Controls P70JA-18 is a heavy-duty adjustable differential high-limit pressure control designed for severe HVAC applications. This long-cycle life switch has a 1/4” NPT pressure connection and operates at a pressure range of 50-450 psi to regulate pressure safely and effectively. The P70JA-18 works on the “Open Hi” concept, which means that when the pressure goes high to a certain limit, it will turn on or off the HVAC equipment. It is therefore essentialthat critical systems such as compressors and pumps run below the pressure threshold levels and thus no harm is caused and the most out of the equipment is gained.
