The /U indicates "universal" or retail packaging

Optimized Water Flow: Calibrated to provide the correct dispersion pattern for Honeywell humidifier evaporative media

What is the difference between a normally closed and normally open solenoid valve

the 920673A features a balanced port design that compensates for varying head pressures

Direct Compatibility: Exact fit for 1/4-inch and 3/8-inch NPT solenoid valves used in HVACR controls

Lennox 10U66 Pressure Switch 322838-752 The /U indicates "universal" orThe Lennox 10U66 Pressure Switch is a critical safety component designed for heavy duty HVACR applications, specifically engineered to monitor high side refrigerant pressures. This 670# M R Hi Pressure Switch acts as a fail safe mechanism, protecting the compressor and system piping from catastrophic failure caused by extreme pressure spikes. It features a specific actuation point of 640 PSI and is built with a manual reset (M R) configuration,