Honeywell PA404B1023 Pressuretrol Controller

Honeywell PA404B1023 Pressuretrol Controller. The PA404 is a series 40 (2-wire, SPST) pressuretrol controller for use in 24, 120, 240 or 277 volt control circuits or in self powered (millivoltage) applications.

Features:

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.

Specifications:

Manufacturer: Honeywell
Manufacturer Part Number: PA404B1023
Product: Controller
Pressure Range: 5-9 Psi Adjustable Pressure Range
Differential Range: 1-5 Psi Adjustable Differential Range
Operating Pressure: 20 Psi Maximum Safe Operating Pressure
Thread: 1/4" Female Threads
Material: Stainless Steel
Weight: 1.21LB
Dimensions: 3.7x5.5x3.1