While it features a 7/8" ID Connection

ensuring consistent pull-in and hold-in force

3-inch ceramic body

this is a model-specific part

Daikin-McQuay 403585101 Pressure Switch 320788-703 While it features a 7/8"The Daikin McQuay 403585101 Low Pressure Switch is an essential OEM safety component designed to maintain system integrity by monitoring refrigerant levels and preventing compressor operation during loss of charge or restricted airflow conditions. Specifically engineered for Daikin and McQuay HVACR units, this low pressure cutout switch (LPCO) features a factory set 21 PSIG open (cut out) and 50 PSIG close (cut in auto reset) parameter. By integrating