Service First SWT04164 FRS1 Flame Rollout Switch 1/2" NPT

Trane SWT01649 1/2" Reverse Flow Switch 105 Open 95 Close NPT

Trane SWT04156 Reverse Air Flow Switch

1/4" 24V Inlet Water Solenoid Valve N/C Normally Closed Flow Switch Quick Con...

Trane SWT01696 Reverse Flow Switch 140 Degrees Open 130 Degrees Close

Service First SWT01259 3-1/2 in. 24V High/Low Limit Switch

GEMS FS-400P Flow Switch | 1/2" NPT | Liquid Flow Sensor 133805