this Robertshaw Ranco Uni-Line control supports 120/240V AC applications with a pilot duty rating of 240VA

Does this unit prevent backflow

Featuring a 21°F fixed differential between high and low cut-ins

Thermal Stability: Optimized for operation in extreme mechanical room or outdoor ambient temperatures

Maxitrol 210D-1 Regulator Els PW 29614 this Robertshaw Ranco Uni-Line controlThe Maxitrol 210D 1 Regulator is a specialized gas pressure regulator designed for high capacity applications requiring precise control and rapid response. Featuring a 1" NPT connection, this lock up style gas regulator utilizes a balanced valve design to maintain consistent outlet pressure despite significant fluctuations in inlet pressure. It is rated for a 10 PSI max inlet pressure and comes factory set with a 3 8" wc outlet pressure range, making