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the S1-3500-405P/A is the current manufacturer-specified replacement for the legacy S1-3500-4051 and 3500-405P models
The EVOLZ is a direct-fit TRV head
This 15-degree differential is critical for preventing short cycling while ensuring continuous liquid line or airflow protection
it includes factory-set dial stops that must be calibrated to match the original equipment specifications to prevent system damage
Schneider Electric (Barber Colman) 2353-502 Relay 30067439-890 the S1-3500-405P/A is the currentThe Schneider Electric (Barber Colman) 2353 502 is a robust Pneumodular Diverting Relay designed for heavy duty switching and interlocking in pneumatic control systems. This snap acting, positive two position device is engineered to convert proportional pneumatic signals into definitive outputs for final control elements. With an adjustable set point range of 4 to 20 psig and a fixed 3. 0 0. 1 psig differential, it provides precise airflow management
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