Cleveland Controls DFS-221-228 Pressure Switch Industry Standards: UL 5085 approved

Industry Standards: UL 5085 approved and safety agency recognized for reliable Class 2 power supply performance

By facilitating continuous air venting

as an OEM part

including the 143-80-1

High Pressure Rating: Robust design with a maximum working pressure of 650 psi

Cleveland Controls DFS-221-228 Pressure Switch Industry Standards: UL 5085 approvedThe Cleveland Controls DFS 221 228 is a high reliability, non adjustable airflow proving switch designed for critical monitoring in duct heaters, ovens, and sophisticated energy management systems. Engineered for technicians who require a "set and forget" solution, this SPDT air pressure switch is factory fixed to operate on a pressure rise of 0. 05 0. 02" w. c., ensuring precise safety interlocks. Its compact, open mounted design is specifically