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

Click the file icon to view the file online, or right-click on the file icon and select "Save Target As..." to download the file to your computer for later viewing.
Tip: If you want to print a large file, download it to your PC first.

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 Lesman.com
Operating Range Sustained
Pressure
Adjustable
Differential
Sensor Element Includes Catalog
Number
If the model you need isn't listed here, call Lesman Inside Sales at 800-953-7626.
2 to 25 PSI 25 PSI 2 to 6 PSI Stainless Steel DiaphragmSiphon Loop L404F1060
5 to 50 PSI 85 PSI 6 to 14 PSI Stainless Steel Diaphragm Ground Screw L404F1375
10 to 150 PSI225 PSI 10 to 22 PSI Stainless Steel Diaphragm   L404F1102
20 to 300 PSI 350 PSI 20 to 50 PSI Phosphor-Bronze Bellows   L404F1094

 

See our full combustion safety and efficiency instrumentation offering.

Flame safeguard systems
Flame safeguard systems
Plug-in modules
Keyboards, purge timer cards,
and annunciator panels
Flame detectors
Flame detectors
Flame amplifiers
Flame signal amplifiers
Pressure controls
Pressure controls
Temperature controls
Temperature controls
valves and motors
Shutoff valves, control valves,
and actuators
combustion efficiency analyzers
Combustion efficiency and
emissions analyzers

 

Videos

Subscribe to the Lesman Instrument Company YouTube channel.Lesman Instrument Company on YouTube

Video is a great way to learn about instruments and technology, and it's available whenever you need it. Watch step-by-step instructions on how to configure a transmitter, tune a controller, or troubleshoot a safety valve. We'll post videos we create, and those our manufacturer partners share with us, so you don't have to look in multiple places to find the video training you need.

Subscribe to Lesman's YouTube channel, and you'll get email notifications as soon as we add new training videos and webinars.