Honeywell PA404A1033/U Pressuretrol Controller, Gray

The Honeywell PA404A1033/U Pressuretrol Pressure Controller provides precise, reliable control of pressure systems with an adjustable range of 0.5 to 9 PSI and a durable snap-acting SPST switch design.

The Honeywell PA404A1033/U Pressuretrol Pressure Controller is designed for controlling pressure in steam, air, and water systems. Featuring a control range of 0.5 to 9 PSI and an adjustable differential of 1 to 5 PSI, this unit ensures dependable operation and accurate system regulation. The rugged, gray enamel-finished steel housing and snap-acting SPST switch provide long-lasting durability and consistent performance in demanding environments. Ideal for residential, commercial, and light industrial boiler control applications.

• Model number PA404A1033/U identifies the Honeywell Pressuretrol Pressure Controller with 0.5–9 PSI control range and SPST snap-acting switch.
• Designed for pressure control in steam heating systems and other low-pressure applications.
• Provides automatic pressure cutoff and restart to maintain system efficiency and safety.

Technical Data & Performance

• Product Type: Pressure Controller (Pressuretrol).
• Brand: Honeywell.
• Model: PA404A1033/U.
• Function: Pressure control for steam, air, or water systems.
• Control Range: 0.5 to 9 PSI.
• Differential Range: 1 to 5 PSI adjustable.
• Switch Type: SPST (Single-Pole Single-Throw).
• Switch Action: Snap-acting for quick, positive operation.
• Pressure Connection: 1/4-inch NPT female, located on the bottom of the controller.
• Electrical Rating: 120 VAC, 240 VAC standard control voltage.
• Electrical Switch Rating: 8.0A @ 120 VAC; 5.1A @ 240 VAC (resistive load).
• Medium Compatibility: Air, steam, or water (non-corrosive media).
• Contact Type: Silver alloy contacts for long service life and reliable conductivity.
• Actuator Mechanism: Bellows-type sensor responsive to pressure changes.
• Accuracy: ±0.3 PSI typical (depending on range and operating conditions).
• Mounting Type: Surface or bracket mount for vertical positioning.
• Housing Material: Enamel-coated steel for mechanical strength and corrosion resistance.
• Housing Finish: Gray enamel.
• Cover Type: Removable front cover for easy access to adjustment controls.
• Enclosure Rating: NEMA 1 – suitable for indoor applications.
• Ambient Operating Temperature Range: 32°F to 150°F (0°C to 65°C).
• Storage Temperature Range: -40°F to 160°F (-40°C to 71°C).
• Humidity Range: 0–95% RH, non-condensing.
• Pressure Relief: Factory calibrated and field adjustable for system requirements.
• Adjustment Mechanism:
  • Main scale adjustment screw sets pressure cut-in point.
  • Internal differential screw sets cut-out differential.
• Compliance:
  • Complies with UL 353 and CSA C22.2 No. 24 safety standards.
  • Meets ANSI/ASME CSD-1 boiler safety code requirements when installed properly.
• Dimensions (Approximate):
  • Height: 4-15/32 inches (114 mm).
  • Width: 3-3/8 inches (86 mm).
  • Depth: 2-1/4 inches (57 mm).
• Weight: ~1 lb (0.45 kg).
• Mounting Hardware: Included.
• Packaging: Supplied as a complete pressure control unit with instructions and mounting accessories.
• Warranty: Covered by Honeywell’s Limited Manufacturer’s Warranty for product quality and reliability.

Applications & Benefits

• Provides automatic pressure control for low-pressure steam and air systems.
• Adjustable range and differential allow precise system calibration.
• Snap-acting SPST switch ensures reliable contact operation under varying pressures.
• Durable enamel-coated housing protects against corrosion and impact.
• Ideal for residential, commercial, and industrial boiler applications.
• Easy-to-adjust controls simplify installation, calibration, and servicing.