Cleveland Controls DFS-448-452 Sensing Switch 321702-401 Standardized Connections: Utilizes 1/2" NPT

Standardized Connections: Utilizes 1/2" NPT threading for compatibility with standard HVAC gas manifold assemblies

this switch eliminates "dry run" conditions that can lead to pump failure and ensures total flood protection for the facility

preventing the fan from shutting down after the cool-down cycle

Built to handle standard 208/230V input

This 1/2-inch NPT gas valve features a compact 3-13/16" swing radius

Cleveland Controls DFS-448-452 Sensing Switch 321702-401 Standardized Connections: Utilizes 1/2" NPTThe Cleveland Controls DFS 448 452 is a fixed set point air pressure sensing switch designed for critical airflow proving in duct heaters, air handlers, and energy management systems. Engineered for technicians who need a "set and forget" solution, this differential pressure switch features a non adjustable set point of 0. 05" W. C. (+0. 025 0. 005"), ensuring precise activation when system pressures rise. Its SPDT snap acting switch allows for