The Murphy 45APEF-S-1500 is a 4.5-inch panel-mounted pressure regulator with a pressure range of 0 - 1500 Psi.
It belongs to the 45APE series Swichgage instruments, which are mechanical instruments for pressure indication. This regulator includes two adjustable SPDT switches that can be used for starting and stopping equipment, triggering alarms, and shutting down equipment.
It employs a Bourdon tube sensing unit with stainless steel double-sector gear movement to accurately drive the pointer to display actual pressure readings.
The low-trip and high-trip points can be independently adjusted on the pre-metering lens, and the switch operator pointer is easy to calibrate, accurately triggering the quick-action switch with pressure changes to meet various pressure control requirements.