L404F1078/U Pressure Switch for Industrial Steam & Air Pressure Monitoring - View 1
Honeywell

L404F1078/U Pressure Switch for Industrial Steam & Air Pressure Monitoring

Pressure Switch for Industrial Steam & Air Pressure Monitoring

Technical Specifications

ParameterSpecification
Product TypePressureTrol Controller
Pressure Range5 to 50 psi
Differential Range6 to 14 psi
Connection Size1/4 inch NPT internal pipe thread
Switch TypeSPDT snap-acting switch
Sensor ElementStainless steel diaphragm
Operating Temperature Range-35°F to 150°F
MountingPipe or surface mounting
ApplicationSteam, air, non-combustible gases, non-corrosive fluids

Notes

Product Overview

The L404F1078/U PressureTrol Controller is a pressure monitoring and control device suited for industrial steam, air, and non-combustible gas systems. It offers adjustable pressure range and differential settings for precise control and automatic limit protection. The controller uses a reliable SPDT snap-acting switch to open or close electrical circuits on pressure rise.

This model is commonly used in boiler systems, HVAC applications, and industrial pressure control systems requiring robust and repeatable pressure regulation. It accepts pipe mounting via a 1/4 inch NPT internal connection or optional surface mount.


Key Features

  • Adjustable operating pressure from 5 to 50 psi
  • Adjustable differential range of 6 to 14 psi
  • SPDT snap-acting switch for reliable operation
  • Stainless steel diaphragm sensing element
  • Provides automatic limit protection
  • Easy mounting with standard pipe or surface mount
  • Suitable for steam, air, and non-corrosive fluid systems

Packaging & Delivery

  • Individually packed with protective industrial carton
  • Export-ready packaging available
  • Standard shipping via air, sea, or courier
  • Bulk shipping options for distributors and projects

Frequently Asked Questions (FAQ)

Q: What applications is this controller suitable for?
A: It is suitable for steam, air, and non-combustible gas pressure control in industrial systems.

Q: What is the pressure range on the L404F1078/U?
A: It operates from 5 to 50 psi with an adjustable differential.

Q: What type of switch does it use?
A: It uses a SPDT snap-acting switch.

Q: How is this unit mounted?
A: It mounts via 1/4 inch NPT internal pipe threads or surface mount.

Q: Is this controller suitable for boiler systems?
A: Yes, it is commonly used in boiler and HVAC pressure control systems.

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