Because these thermostats work in tandem to cycle the heating elements

it ensures a specific fit and proper electrical resistance matching for 24-volt control circuits

Is this the correct replacement for the older PRD series

and bracket

Emerson Alco 049189 Solenoid Valve 30067439-890 Because these thermostats work inThe Emerson Alco 049189 Solenoid Valve (model 200RB5T5M) is a heavy duty, 2 way normally closed solenoid valve engineered for precise refrigerant flow control in commercial refrigeration and HVAC systems. As a pilot operated valve, it utilizes a 5 8" ODF sweat connection with extended copper ends, allowing technicians to braze the unit into the liquid, suction, or discharge line without disassembling the internal components. This model is