Pressuretrol Controller

Pressure Range PSIG: 0.5-9; Diff. PSIG: Additive: 1-5;

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  • 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

Pressure Range PSIG: 0.5-9; Diff. PSIG: Additive: 1-5;


Maximum operating pressure rating: 20 PSI; ambient temperature rating: 150°F |Dimensions (case): 4-15/32" H x 3-3/8" W x 2-1/4" D

Product Specifications

Diff. PSIGAdditive: 1-5
Pressure Range PSIG0.5-9
Shipping Weight1.10
Shipping Width3.70
Shipping Length3.20
Shipping Height5.20

Compliance & Notes

Harmonize Code9032200000

See catalog page 498 for additional notes and/or restrictions.

Warranty Information

WARRANTY - Johnstone Supply will administer and promptly process all warranties in accordance with the manufacturer's specific warranty policies and procedures.

WHOLESALE ONLY - Identification is required of purchasers. Possession of Johnstone's catalog does not constitute an offer to sell by Johnstone or the right to purchase from us.

RETURNS - All returns are subject to a restocking charge.

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See other: Honeywell - Miscellaneous
See all: Honeywell Products

Mfg. #: PA404A1033