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LF20-H Pressure Switch

Brand: Mamco

The LF20-H is a high pressure/low set point pressure switch for applications that see sudden pressure spikes and high pressures which can result in early switch failures. 

This series has been strengthened to prevent cracking of the base with plated steel and screw machined components in a three piece design. 

Modifications to the effective area of the pressure cavity, size of the diaphragm button and diaphragm o-ring are what makes the switch capable of handling sudden pressure transients and high system pressures that are common in applications such as braking, transmission and hydraulic systems.
Features
  • Designed to perform in higher pressure environments
  • Various diaphragm materials are available to make it compatible with many mediums
  • Many electrical terminations are available
  • We offer an adjustment screw for fine tuning if required
  • Tough, versatile choice for many OEM applications

Specifications

Brand

Operating Temperature

  • -40° to 120° C (-40° to 248° F)

Cover Material

  • Glass Reinfornced Polyester

Adjustment Type

  • Factory Set (Pre-Set)

Switch Type

  • Blade Contact
  • Direction Action
  • SPDT
  • SPST

Electrical Connectors

  • 1/4” Blade Terminal
  • 8-32 Screw Terminal
  • Metri-Pack
  • Wire Leads

Diaphragm Material

  • Polyimide

Set Point - Decreasing

  • bar: 0.68 to 27.58
  • kPa: 68.95 to 2,758
  • psi: 10 to 400

Set Point - Increasing

  • bar: 0.68 to 27.58
  • kPa: 68.95 to 2,758
  • psi: 10 to 400

Electrical Rating

  • 0.5 A at 240 Vac Inductive
  • 1 A at 120 Vac Inductive
  • 15 A at 6 Vdc Resistive
  • 4 A at 24 Vdc Resistive
  • 8 A at 12 Vdc Resistive

Media

  • Air
  • Hydrocarbons
  • Jet Fuels
  • Motor Oils & Transmission Oils
  • Water

Burst Pressure

  • psi: 4,000 (kPa: 27,580, bar: 275)

Applications

  • Braking, Transmission & Hydraulic Systems
  • OEM Applications

BSP Connection

  • G 1/4” Male
  • G 1/8” Male
  • 1/4” BSPT Male
  • 1/8” BSPT Male

NPT Connection

  • 1/4” NPT Male
  • 1/8” NPT Male

Electrical Contacts

  • Gold-Plated
  • Normally Closed
  • Normally Open
  • Silver Alloy

Operating Pressure

  • psi: 500 (kPa: 3,450, bar: 35) - Max.

System Pressure

  • bar: 137.9
  • kPa: 13,790
  • psi: 2,000

Approvals & Certifications

  • ISO 9001: 2000

Materials of Construction

  • Plated Steel - Base Material
  • Stainless Steel - Base Material

Proof Pressure

  • psi: 2,000 (kPa: 13,800, bar: 138)

  • Braking, Transmission & Hydraulic Systems
  • OEM Applications

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