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Instantly add the Series L4 FLOTECT Float Switch and 50,000+ more product series to your store or catalog  
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Dwyer FLOTECT Float Switch, Series L4

Series L4 FLOTECT Float Switch

Brand: Dwyer Instruments, LLC
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Rugged and reliable the Series L4 Flotect® Float Switch operates automatically to indicate tank level.

Perfect for starting or stopping pumps, opening or closing valves, or actuating level alarm signals.

A unique magnetically actuated switching design gives superior performance. 

There are no bellows, springs, or seals to fail. Instead, the free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm. Float arm hinge design limits the arm angle to prevent vertical hang up.
Features
  • Unique magnetically actuated switching design gives superior performance
  • No bellows, springs, or seals to fail
  • Free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm
  • Float arm hinge design limits the arm angle to prevent vertical hang up

1 - 12 of 1,920 Part Numbers
L4
L4
DWYER Float Switch, Brass Body, 316 SST Float, Side Wall Mounting.
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 430 Stainless Steel
  • Certificates - Standard Housing Approvals (ATEX, CE, CSA, FM, IECEx, UL)
  • Mounting - Horizontal Instllation
  • Pressure Limit - Standard
L4-150
L4-150
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 430 Stainless Steel
  • Certificates - Standard Housing Approvals (ATEX, CE, CSA, FM, IECEx, UL)
  • Mounting - Horizontal Instllation
  • Pressure Limit - 150 psig (10.3 bar)
L4-300
L4-300
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 430 Stainless Steel
  • Certificates - Standard Housing Approvals (ATEX, CE, CSA, FM, IECEx, UL)
  • Mounting - Horizontal Instllation
  • Pressure Limit - 300 psig (20.7 bar)
L4-316
L4-316
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - Standard Housing Approvals (ATEX, CE, CSA, FM, IECEx, UL)
  • Mounting - Horizontal Instllation
  • Pressure Limit - Standard
L4-316-150
L4-316-150
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - Standard Housing Approvals (ATEX, CE, CSA, FM, IECEx, UL)
  • Mounting - Horizontal Instllation
  • Pressure Limit - 150 psig (10.3 bar)
L4-316-300
L4-316-300
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - Standard Housing Approvals (ATEX, CE, CSA, FM, IECEx, UL)
  • Mounting - Horizontal Instllation
  • Pressure Limit - 300 psig (20.7 bar)
L4-316-50
L4-316-50
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - Standard Housing Approvals (ATEX, CE, CSA, FM, IECEx, UL)
  • Mounting - Horizontal Instllation
  • Pressure Limit - 50 psig (3.5 bar)
L4-316-AT
L4-316-AT
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - ATEX Compliant Construction
  • Mounting - Horizontal Instllation
  • Pressure Limit - Standard
L4-316-AT-150
L4-316-AT-150
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - ATEX Compliant Construction
  • Mounting - Horizontal Instllation
  • Pressure Limit - 150 psig (10.3 bar)
L4-316-AT-300
L4-316-AT-300
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - ATEX Compliant Construction
  • Mounting - Horizontal Instllation
  • Pressure Limit - 300 psig (20.7 bar)
L4-316-AT-50
L4-316-AT-50
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - ATEX Compliant Construction
  • Mounting - Horizontal Instllation
  • Pressure Limit - 50 psig (3.5 bar)
L4-316-AT-TOP
L4-316-AT-TOP
  • Body Material - Brass Body, Side Wall Mounting
  • Electrical Contacts - Standard
  • Switch Type - SPDT Snap Switch
  • Temperature Options - -20° to 135° C (4° to 275° F)
  • Relay - Standard
  • Magnet Keeper Material - 316 Stainless Steel
  • Certificates - ATEX Compliant Construction
  • Mounting - Top Mount
  • Pressure Limit - Standard
1 - 12 of 1,920 Part Numbers

View_Details

Specifications

Brand

Ambient Temperature Range

  • -20° to 73° C (-4° to 163° F)

Approvals & Certifications

  • ATEX
  • CE
  • CSA
  • Ex
  • FM
  • IEC Ex
  • UL

Deadband

  • 3/4” (19 mm) for Standard Float

Electrical Connectors

  • 16 AWG, 6” (152 mm) Long
  • Terminal Block

Electrical Rating

  • 1 A at 125 Vac
  • 1 A Resistive, 5 A Inductive at 30 Vdc
  • 10 A at 125/250 Vac
  • 5 A at 125/250 Vac
  • 5 A Resistive, 3 A Inductive at 30 Vdc

Enclosure, Body Material

  • 316 Stainless Steel
  • Brass

Environmental Protection

  • Explosion-proof
  • Weatherproof

Fluid Specific Gravity

  • 0.7 Min. with Standard Float

Media

  • Liquids & Gases

Mounting

  • Side Mounting

NPT Connection

  • 1-1/2” NPT Male
  • 2-1/2” NPT Male

Pressure Range

  • psig: 100 to 2,000 (kPa: 690 to 13,800, bar: 6.9 to 138)

Process Temperature

  • -20° to 73° C (-4° to 163° F)

Sensor / Probe Style

  • Float

Sensor Orientation

  • Horizontal Installation Standard
  • Vertical Top Mount

Switch Type

  • DPDT
  • SPDT

Temperature Range

  • -20° to 135° C (-4° to 275° F)

Wetted Materials

  • 316 Stainless Steel
  • 430 Stainless Steel
  • Nickel

  • Direct Pump Control for Maintaining Level
  • Automatic Tank Dump Operations
  • Level Control
  • Valve Control
  • Control Levels or Provide Alarms in: 
    • Sumps
    • Scrubber Systems
    • Hydro-Pneumatic Tanks
    • Low Pressure Boilers
    • and Various Water/Wastewater Treatment Processes

Documentation

Data Sheets

Approvals

Catalogs

Manuals

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