Cleveland DFS-221 Air Pressure Sensing SwitchCleveland DFS 221 Air Pressure Sensing Switch delivers precise low pressure control for industrial systems. This SPDT fixed point air pressure sensing switch activates at a fixed set point of 0. 05 in. W. C. (Model 18407), providing dependable, repeatable performance in tight pressure environments. Ideal for automation and control circuits, the DFS 221 uses a SPDT output to switch circuits on or off as pressure crosses the set point. Built for

a die-cast aluminum body with NEMA 1 enclosure

Direct replacement for 9006106205

ensuring rapid response under fault conditions while remaining compatible with common residential heater configurations

Integrated flow interlock for enhanced protection

along with a rugged aluminum body

Maintenance-friendly design minimizes downtime and simplifies servicing

a Monel and phosphor bronze element

Secondary 10

It is compatible with standard pilot assemblies and provides reliable safety signals

With operating pressures from 5 to 150 PSI (air/inert gas) and suitable ranges for water and oil

Built for versatility

ensuring reliable start-up and safe operation across a range of appliances