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- The PA404 is a series 40 (2-wire, SPST) pressure controller for use in 24, 120, 240 or 277 volt control circuits or in self powered (millivoltage) applications.
Resideo Pressuretrol® Pressure Controller, 0.5 to 9 psi Control Range, SPST Switch, Snap Acting Electronic, 1 to 5 psi Differential Pressure Range, Enamel, Gray, 4-15/32 in H x 3-3/8 in W x 2-1/4 in D
- Pressure controller breaks an electrical circuit to shut down the burner if steam pressure rises above a safe level
- 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
- A screw on top of the case allows set point adjustments without removing the cover
- Differential is adjusted by means of a dial located inside the case
- Control Range0.5 to 9 psiSwitch ActionSnap Acting ElectronicSwitch TypeSPSTColorGrayDifferential Pressure Range1 to 5 psiDimensions4-15/32 in H x 3-3/8 in W x 2-1/4 in DFinishEnamelManufacturerResideo TechnologiesManufacturer #PA404A1033/U