Honeywell L404 Pressuretrol® Pressure Limiting Controllers

Honeywell's L404F Pressuretrol is an operating control with automatic limit protection for pressure systems up to 300 PSI. You can use it with steam, air, noncombustible gases, or fluids that are not corrosive to the pressure sensing element.

All Pressuretrol models feature automatic reset with adjustable differentials.

Key Specifications

  • For use with steam, air, non-combustible gases, or fluids non-corrosive to sensing elements
  • SPDT snap action switches to open or close a circuit on pressure rise
  • 120 VAC switch rating: 8.0 AFL, 48.0 ALR, 10.0 Amp resistive
  • Adjustments are made by screws on top of the case
  • Clear plastic cover on the case make setpoints easy to see
  • Mount using 1/4"-18 NPT internal pipe threads, or surface mount through the base of the case

Specifications, Manuals, and Supporting Literature

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Model Selection Guide

Use this table to find the right model for your application. Click the model number to order in our secure online store.

Models Available to Buy Online at
Operating RangeSustained
Sensor ElementIncludesCatalog
If the model you need isn't listed here, call Lesman Inside Sales at 800-953-7626.
2 to 25 PSI25 PSI2 to 6 PSIStainless Steel DiaphragmSiphon Loop L404F1060
5 to 50 PSI85 PSI6 to 14 PSIStainless Steel DiaphragmGround Screw L404F1375
10 to 150 PSI225 PSI10 to 22 PSIStainless Steel Diaphragm  L404F1102
20 to 300 PSI350 PSI20 to 50 PSIPhosphor-Bronze Bellows  L404F1094