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.
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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
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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