Honeywell Pressuretrol Controllers
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Honeywell Pressuretrol Controllers
L404F Pressuretrol Controllers: Provides operating control with automatic limit protection for pressure systems up to 300 psi.
PA404 Pressuretrol Controllers: Series 40 (2-wire, SPST) Pressuretrol controller for use in 24, 120, 240 or 277 volt control circuits or in self powered applications.
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Honeywell Pressuretrol Controllers
L404F Pressuretrol Controllers: Provides operating control with automatic limit protection for pressure systems up to 300 psi.
- Use with steam, air, noncombustible gases, or fluids non-corrosive to pressure sensing element
- Models have snap-acting switching to open or close a circuit on pressure rise
- Adjustable differentials
- Adjustments made by screws on top of case
- Mount using 1/4 inch-18 NPT internal pipe threads or saurface mount through base of case
- Ground screw terminal
PA404 Pressuretrol Controllers: Series 40 (2-wire, SPST) Pressuretrol controller for use in 24, 120, 240 or 277 volt control circuits or in self powered applications.
- Pressure actuated high limit, safety control for steam heating boilers
- Used with suspension-type unit heaters to make the fan circuit when a pressure rise indicates the presence of steam
- Models have snap-acting SPST MICRO SWITCH
- Sensitive pressure-actuated diaphragm expands or contracts with pressure variations, moving lever mechanism
- Screw on top of case allows set point adjustment without removing cover
- Differential is adjusted by means of a dial located inside the case