This specific blend is optimized for HFC and HCFC refrigerants—including R410A

The Weil McLain 383-500-630 Gauge Assembly is a high-precision OEM replacement component engineered specifically for Weil McLain Ultra series boilers

crucial for sensitive control circuits

ideal for monitoring flue gas pressure

Field technicians should verify flame rectification current using a multimeter in series with the sensor lead to ensure it meets the HVAC furnace parts specification of the OEM controller

Cleveland Controls AFS-305 Switch Els PW 17895 This specific blend is optimizedThe Cleveland Controls AFS 305 is a high performance differential pressure switch engineered for precise monitoring of air flow and pressure in commercial HVACR systems. This manual reset air switch features an adjustable set point range from 0. 40" 0. 06" to 12. 0" w. c., making it ideal for clogged filter detection and burner fan supervision. Built with a robust SPDT contact arrangement and a 1 2 PSI maximum pressure rating, the AFS 305 ensures