This kit typically focuses on the collector box assembly and gaskets

meaning it stops the flow of media until the 24Vac coil is energized

the 93-7B-HD is the head mechanism only

it is designed to meet strict ASME Section IV safety standards for saturated steam service

and commercial air handlers where quiet

Trane SWT3209 Switch 321702-401 This kit typically focuses onThe Trane SWT3209 is a heavy duty high pressure cutout switch designed for critical safety monitoring in commercial HVAC systems. This SPST manual reset switch is engineered to protect the compressor and refrigerant circuit by opening the electrical circuit when internal pressures exceed safe operating limits. Specifically rated for high pressure applications, the SWT3209 features a factory calibrated 650 PSI open setpoint and a 500 PSI close