The McDonnell & Miller 306700 is specifically designed for the FS7-4
the solenoid coil must be purchased separately based on your specific voltage and wattage requirements
a difference greater than 3°F across the suction ports often indicates internal bypass or a mechanical failure
High-Precision Signal Integrity: Ensures stable air pressure delivery to pneumatic control systems for accurate temperature sensing
ensuring high-accuracy temperature and pressure regulation across all main valve sizes
McDonnell & Miller 309100 Switch R-410A The McDonnell & Miller 306700The McDonnell & Miller 309100 Switch, also known as the Model Number 11 Switch, is a heavy duty replacement switch kit designed for field repairs of float type low water cut offs. Engineered for automatic reset operation, this unit features two SPST switches that allow for simultaneous control of a burner circuit and a secondary function, such as an electric water feeder or a low water alarm. It is fully compatible with Series 61, 64, 67, 69, 764, and