The female side features a 3/4" NPS (Nominal Pipe Size) straight thread

Its lightweight construction minimizes startup torque requirements

What is the difference between 396021 and 90-396021

Check your existing mounting holes

York S1-025-26366-009 Temp Control The female side features aThe York S1 025 26366 009 is a high performance SPDT Temp Control specifically engineered for precision in heating and cooling applications. As a Single Pole Double Throw switch, this component provides versatile circuit management by either opening or closing electrical paths based on thermal thresholds. It is factory calibrated to a 195F Open and 130F Close setpoint, making it an essential high limit switch for safeguarding HVAC equipment against