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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

Environmental Conditions

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

Actuation, Control & Motion Characteristics

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

Safety, Protection & Reliability

  • Reset Type
    • Automatic reset

Pressure Specifications

  • 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)
  • Maximum Diaphragm Pressure
    • Up to 350 psi (2410 kPa)

Installation & Mounting Specifications

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

Overview

  • Models
    • L404F, L404T, L404V

Material Specifications

  • Material
    • Rigid case with clear plastic cover

Electrical Specifications

  • Maintenance Interval
    • Occasional scaleplate adjustment; annual checkout recommended

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)

Measurement, Media & Physical Properties

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

Control, Logic & Functional Behavior

  • Control Functions
    • Operating control with automatic reset

Mechanical Design, Layout & Construction Options

  • Conduit Entries
    • Knockouts for 1/2 in conduit

Standards & Certifications

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

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)

Environmental Conditions

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

Actuation, Control & Motion Characteristics

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

Safety, Protection & Reliability

  • Reset Type
    • Automatic reset

Pressure Specifications

  • 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)
  • Maximum Diaphragm Pressure
    • Up to 350 psi (2410 kPa)

Installation & Mounting Specifications

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

Overview

  • Models
    • L404F, L404T, L404V

Material Specifications

  • Material
    • Rigid case with clear plastic cover

Electrical Specifications

  • Maintenance Interval
    • Occasional scaleplate adjustment; annual checkout recommended

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)

Measurement, Media & Physical Properties

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

Control, Logic & Functional Behavior

  • Control Functions
    • Operating control with automatic reset

Mechanical Design, Layout & Construction Options

  • Conduit Entries
    • Knockouts for 1/2 in conduit

Standards & Certifications

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

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)
  • Ambient Temperature Limits : Max 150 deg F (66 deg C)
  • Switch Type : MicroSwitch® snap‑acting switch
  • Switch Action : Snap switch: breaks R-B, makes R-W on pressure rise
  • Reset Type : Automatic reset
  • Operating Pressure Range : 10 to 150 psi|2 to 15 psi|20 to 300 psi (model dependent)|5 to 50 psi
  • Mounting Types : 1/4-18 NPT pipe fitting or surface mount via case knockouts
  • Models : L404F, L404T, L404V
  • Maximum System Pressure : L404F: Up to 300 psi (2070 kPa)|L404T/L404V: Up to 150 psi (1035 kPa)
  • Maximum Diaphragm Pressure : Up to 350 psi (2410 kPa)
  • Material : Rigid case with clear plastic cover
  • Maintenance Interval : Occasional scaleplate adjustment; annual checkout recommended
  • 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)
  • Differential Range : Adjustable; varies by model (e.g., 2 to 6 psi, 6 to 14 psi, 20 to 50 psi)
  • Control Functions : Operating control with automatic reset
  • Conduit Entries : Knockouts for 1/2 in conduit
  • Approvals : UL Listed (MP466), CSA Approved (LR1620), WEEE Directive 2012/19/EU - Waste Electrical and Electronic Equipment Directive
  • 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)
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LIMIT STOP ASSEMBLY FOR L404/L604. INCL
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EC16072
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