and original PS1-X5K series

or the difference between two points depending on how you plumb the 1/8" NPT and barb fittings

technicians must ensure the system is properly flushed and charged with Polyolester (POE) oil if transitioning from an R-22 mineral oil setup

and seat ring to address both external leaks and internal bypass

making it indispensable for maintaining damper actuator or valve drive accuracy in high-demand commercial environments

Lennox 97M75 Kit 322838-752 and original PS1-X5K seriesThe Lennox 97M75 Rebuild Kit is an essential field replacement component designed for precise refrigerant metering and system restoration. This replacement RFC kit features a . 057 orifice, ensuring calibrated liquid flow through the expansion device to maintain correct superheat levels and optimize evaporator coil efficiency. Engineered for high pressure cooling environments, the assembly provides the necessary sealing integrity required to prevent