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1/4" FPT, 0.25 to 12 VDC 0.25 A, 0.5 to 9 PSI Operating/1 to 5 PSI Differential, SPST, Diaphragm, Additive Differential, Pressuretrol Controller
The PA404A is a Pressure Actuated High Limit, Safety Control for Steam Heating Boilers
It Breaks an Electrical Circuit to Shut Down the Burner if Steam Pressure Rises Above a Safe Level
The PA404B is Used with Suspension-Type Unit Heaters to Make the Fan Circuit When a Pressure Rise Indicates the Presence of Steam
Each Model Contains an SPST Micro Switch Snap Acting Switch
Sensitive Pressure-Actuated Diaphragm Expands or Contracts with Pressure Variations, Moving a Lever Mechanism Which Operates the Snap Switch
A Screw on Top of the Case Allows Set Point Adjustment without Removing the Cover
Differential is Adjusted by Means of a Dial Located Inside the Case
Item#:
71201
Manufacturer Item:
PA404A1033/U
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