Dwyer Instruments PG-7000-153-P1 Pressure Switch 322056-301 the 1170004 manual reset provides

the 1170004 manual reset provides an added layer of safety over automatic reset models

The 1173779 is a 2-speed motor

use a manometer to verify the vacuum pressure meets the 1

The 3-pole configuration allows for simultaneous switching of three separate power lines

the 4-wire configuration simplifies wiring to the defrost thermostat and contactor

Dwyer Instruments PG-7000-153-P1 Pressure Switch 322056-301 the 1170004 manual reset providesThe Dwyer Instruments PG 7000 153 P1 is a gas pressure switch designed for accurate monitoring and control of low pressure air and gas systems. This differential pressure switch operates within a 1 to 30 inch water column range, making it suitable for HVAC applications involving airflow proving, filter monitoring, and burner system safety. Equipped with an SPDT snap switch, it provides reliable and fast contact response for consistent system control.