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pressure switches and gauges

PressureTrol® Pressure monitoring on/off controllers L404F, T, V

Mercury free pressure controls with automatic limit protection for pressure systems up to 300 psi, or oil burner systems up to 150 psi. Can be used with steam, air, non-combustible gases, or fluids non-corrosive to the pressure sensing element.

Overview
L404F PressureTrol® Controllers provide operating control with automatic limit protection for pressure systems of up to 2070 kPa, or 300 psi. These controllers may be used with steam, air, or noncombustible gases, or fluids noncorrosive to the pressure sensing element. L404T,V PressureTrol® Controllers are for use on oil burner systems for pressures up to 1035 kPa or 150 psi. L404T features high pressure limits and breaks a circuit on oil pressure rise above setpoint. L404V is for low pressure limits and makes a circuit on oil pressure rise above setpoint.

Features & Benefits:
Models available in a series of control ranges, and pressure scales in kPa and psi
  • All models automatically reset and have an adjustable differential
  • Models have snap switch to open or close a circuit on a pressure rise
  • Case has a clear plastic cover so setpoints can be observed
  • 1/4 inch—18 NPT connection for pipe on diaphragm assembly
  • Ground screw terminal
Specifications

Overview

  • Models
    • L404F, L404T, L404V

Pressure Specifications

  • Maximum Diaphragm Pressure
    • Up to 350 psi (2410 kPa)
  • Operating Pressure Range
    • 10 to 150 psi
    • 2 to 15 psi
    • 20 to 300 psi (model dependent)
    • 5 to 50 psi
  • Maximum System Pressure
    • L404F: Up to 300 psi (2070 kPa)
    • L404T/L404V: Up to 150 psi (1035 kPa)

Environmental Conditions

  • Ambient Temperature Limits
    • Max 150 deg F (66 deg C)

Electrical Specifications

  • Maintenance Interval
    • Occasional scaleplate adjustment; annual checkout recommended

Measurement, Media & Physical Properties

  • Differential Range
    • Adjustable; varies by model (e.g., 2 to 6 psi, 6 to 14 psi, 20 to 50 psi)

Electrical & Signal Specifications

  • Electrical Rating
    • 120 VAC: 8.0 A (Full Load), 48.0 A (Locked Rotor)
    • 240 VAC: 5.1 A (Full Load), 30.6 A (Locked Rotor)

Control, Logic & Functional Behavior

  • Control Functions
    • Operating control with automatic reset

Mechanical Design, Layout & Construction Options

  • Conduit Entries
    • Knockouts for 1/2 in conduit

Installation & Mounting Specifications

  • Mounting Types
    • 1/4-18 NPT pipe fitting or surface mount via case knockouts

Actuation, Control & Motion Characteristics

  • Switch Action
    • Snap switch: breaks R-B, makes R-W on pressure rise
  • Switch Type
    • MicroSwitch® snap‑acting switch

Applications & Compatibility

  • Applications
    • L404F: Steam, air, non‑combustible gases, non‑corrosive fluids
    • L404T: High oil pressure limit (breaks circuit on pressure rise)
    • L404V: Low oil pressure limit (makes circuit on pressure rise)

Safety, Protection & Reliability

  • Reset Type
    • Automatic reset

Standards & Certifications

  • Approvals
    • UL Listed (MP466), CSA Approved (LR1620), WEEE Directive 2012/19/EU - Waste Electrical and Electronic Equipment Directive

Material Specifications

  • Material
    • Rigid case with clear plastic cover

Overview

  • Models
    • L404F, L404T, L404V

Pressure Specifications

  • Maximum Diaphragm Pressure
    • Up to 350 psi (2410 kPa)
  • Operating Pressure Range
    • 10 to 150 psi
    • 2 to 15 psi
    • 20 to 300 psi (model dependent)
    • 5 to 50 psi
  • Maximum System Pressure
    • L404F: Up to 300 psi (2070 kPa)
    • L404T/L404V: Up to 150 psi (1035 kPa)

Environmental Conditions

  • Ambient Temperature Limits
    • Max 150 deg F (66 deg C)

Electrical Specifications

  • Maintenance Interval
    • Occasional scaleplate adjustment; annual checkout recommended

Measurement, Media & Physical Properties

  • Differential Range
    • Adjustable; varies by model (e.g., 2 to 6 psi, 6 to 14 psi, 20 to 50 psi)

Electrical & Signal Specifications

  • Electrical Rating
    • 120 VAC: 8.0 A (Full Load), 48.0 A (Locked Rotor)
    • 240 VAC: 5.1 A (Full Load), 30.6 A (Locked Rotor)

Control, Logic & Functional Behavior

  • Control Functions
    • Operating control with automatic reset

Mechanical Design, Layout & Construction Options

  • Conduit Entries
    • Knockouts for 1/2 in conduit

Installation & Mounting Specifications

  • Mounting Types
    • 1/4-18 NPT pipe fitting or surface mount via case knockouts

Actuation, Control & Motion Characteristics

  • Switch Action
    • Snap switch: breaks R-B, makes R-W on pressure rise
  • Switch Type
    • MicroSwitch® snap‑acting switch

Applications & Compatibility

  • Applications
    • L404F: Steam, air, non‑combustible gases, non‑corrosive fluids
    • L404T: High oil pressure limit (breaks circuit on pressure rise)
    • L404V: Low oil pressure limit (makes circuit on pressure rise)

Safety, Protection & Reliability

  • Reset Type
    • Automatic reset

Standards & Certifications

  • Approvals
    • UL Listed (MP466), CSA Approved (LR1620), WEEE Directive 2012/19/EU - Waste Electrical and Electronic Equipment Directive

Material Specifications

  • Material
    • Rigid case with clear plastic cover
  • Models : L404F, L404T, L404V
  • Maximum Diaphragm Pressure : Up to 350 psi (2410 kPa)
  • Ambient Temperature Limits : Max 150 deg F (66 deg C)
  • Operating Pressure Range : 10 to 150 psi|2 to 15 psi|20 to 300 psi (model dependent)|5 to 50 psi
  • Maximum System Pressure : L404F: Up to 300 psi (2070 kPa)|L404T/L404V: Up to 150 psi (1035 kPa)
  • Maintenance Interval : Occasional scaleplate adjustment; annual checkout recommended
  • Differential Range : Adjustable; varies by model (e.g., 2 to 6 psi, 6 to 14 psi, 20 to 50 psi)
  • Electrical Rating : 120 VAC: 8.0 A (Full Load), 48.0 A (Locked Rotor)|240 VAC: 5.1 A (Full Load), 30.6 A (Locked Rotor)
  • Control Functions : Operating control with automatic reset
  • Conduit Entries : Knockouts for 1/2 in conduit
  • Mounting Types : 1/4-18 NPT pipe fitting or surface mount via case knockouts
  • Switch Action : Snap switch: breaks R-B, makes R-W on pressure rise
  • Applications : L404F: Steam, air, non‑combustible gases, non‑corrosive fluids|L404T: High oil pressure limit (breaks circuit on pressure rise)|L404V: Low oil pressure limit (makes circuit on pressure rise)
  • Switch Type : MicroSwitch® snap‑acting switch
  • Reset Type : Automatic reset
  • Approvals : UL Listed (MP466), CSA Approved (LR1620), WEEE Directive 2012/19/EU - Waste Electrical and Electronic Equipment Directive
  • Material : Rigid case with clear plastic cover
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4074BWJ/U
LIMIT STOP ASSEMBLY FOR L404/L604. INCL
4074BWJ/U
LIMIT STOP ASSEMBLY FOR L404/L604. INCL
L404F1060/U
PRESSURETROL
L404F1060/U
PRESSURETROL
L404F1078/U
PRESSURETROL
L404F1078/U
PRESSURETROL
L404F1094/U
PRESSURE SWITCH
L404F1094/U
PRESSURE SWITCH
L404F1102/U
10-150PSI PRESSURETOL
L404F1102/U
10-150PSI PRESSURETOL
L404F1219/U
PRESSURETROL 2-15PSI
L404F1219/U
PRESSURETROL 2-15PSI
L404F1227/U
PRESSURETROL
L404F1227/U
PRESSURETROL
L404F1235/U
PRESSURETROL 20-300PSI
L404F1235/U
PRESSURETROL 20-300PSI
L404F1243/U
PRESSURETROL 2-50PSI
L404F1243/U
PRESSURETROL 2-50PSI
L404F1367/U
PRESSURETROL
L404F1367/U
PRESSURETROL