A proper grounding surface is required for the flame rectification circuit to complete

Place probes on both terminals

Universal Compatibility: Supports a broad electrical range of 120-277VAC

As a legitimate York replacement part

spring-assisted closing mechanism prevents the shockwaves associated with standard swing check valves

Antunes Controls 8021204007 Pressure Switch 30067439-890 A proper grounding surface isThe Antunes Controls 8021204007 is a precision engineered Air Differential Pressure Switch designed for monitoring thin air flows in commercial HVACR and industrial combustion systems. This SPDT pressure switch features an adjustable set point range from 0. 17 to 6. 0 inches water column, providing versatile performance for proof of airflow and filter monitoring applications. Built with a rugged die cast aluminum housing and an integrated cover, it