It is a direct cross-reference for Honeywell Q340A and Johnson Controls K19 series

the HH18HA191 is commonly utilized in window units and PTACs as a safety limit or thermostat-linked control switch

Technicians typically look for 120V power at the coil without valve actuation

Is the 002663B compatible with all Raypak model heaters

United Electric J21K-254 Pressure Switch R-22 It is a direct cross-referenceThe United Electric J21K 254 Pressure Switch is an essential component for demanding HVACR and industrial filtration applications, specifically designed to monitor differential pressure with high precision. This 0 90# SPDT NEMA1 Pressure Sw. features opposing metal bellows that accurately sense the pressure delta between two points, making it ideal for differential pressure switch hvac tasks such as monitoring chiller oil pressure, filter status