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  1. Detection - Measurement
  2. Flow, Pressure and Level Measurements
  3. Diaphragm pressure switch
  4. ZHEJIANG LEFOO CONTROLS CO., LTD
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Diaphragm pressure switch LF708
SPDTfor liquidsfor water

Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water - image - 2
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water - image - 3
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water - image - 4
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water - image - 5
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water - image - 6
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water - image - 7
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water - image - 8
Diaphragm pressure switch - LF708 - ZHEJIANG LEFOO CONTROLS CO., LTD - SPDT / for liquids / for water - image - 9
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Characteristics

Technology
diaphragm
Contact type
SPDT
Fluid
for liquids, for water, for oil, for gas
Material
stainless steel, brass, steel
Protection level
IP65, IP67
Applications
industrial, HVAC, for the food industry, for the beverage industry, for the petrochemical industry, for the automotive industry, medical, for agricultural applications, for the energy sector
Other characteristics
high-pressure
Pressure range

Min.: 0 bar
(0 psi)

Max.: 160 bar
(2,320.6 psi)

Switching power: current

4 A

Burst pressure

80 bar, 300 bar
(1,160.3 psi, 4,351.13 psi)

Process temperature

Min.: -40 °C
(-40 °F)

Max.: 100 °C
(212 °F)

Description

Product Overview
In industrial and automotive systems the LF708 diaphragm pressure switch monitors process pressure and sends an electrical signal when a preset value is reached to start machinery or trigger alarms. SPDT contact arrangement. Observe material-dependent pressure limits; do not exceed burst pressure.

Parameters
Body material: zinc-plated steel / stainless steel / brass
Contact: silver–cadmium alloy (gold plating available)
Max voltage: 42 VDC (up to MAX 100 VAC)
Max current: 4 A
Operating temperature: -40 °C to +100 °C (diaphragm dependent)
Mechanical life: 1,000,000 cycles
Electrical life: 100,000 cycles
Pollution degree: normal
Protection: IP00 (terminals 1–2) / IP67 (terminals 3–8) / IP65 (terminal 9)
Top cover: P54 (terminals 1–2)
Side cover: P55 (terminals 1–2)
Applicable standard: EN 60730-1
Max working pressure: zinc-plated steel / stainless steel: 160 bar; brass: 40 bar
Burst pressure: zinc-plated steel / stainless steel: 300 bar; brass: 80 bar
Weight: ≈85 g
Conversion: 1 kgf/cm² = 14.2 psi; 1 bar = 14.5 psi

Documents & Drawings
  • Diaphragm Pressure Switch LF708 (PDF)
  • CE Certificate - Pressure Switch LF708 Series (PDF)

Related Application
  • HVAC
  • Cleanroom
  • Refrigeration
  • Building automation
  • Water & wastewater
  • Food & beverage
  • Oil & gas
  • Petrochemicals
  • Machine building & automation
  • Engineering equipment
  • Home appliances
  • Power & energy
  • Agriculture
  • Commercial equipment
  • Chemical processing
  • Laboratory & medical devices

Technical specifications
  • Model: LF708
  • Type: Diaphragm pressure switch
  • Contact form: SPDT
  • Body materials: zinc-plated steel, stainless steel, brass
  • Max working pressure: up to 160 bar (material dependent)
  • Burst pressure: up to 300 bar (material dependent)
  • Max voltage: up to 100 VAC (42 V typical)
  • Max current: 4 A
  • Operating temperature: -40 °C to +100 °C (dependent on diaphragm)
  • Mechanical life: 1,000,000 cycles
  • Electrical life: 100,000 cycles
  • Protection levels: IP00 / IP67 / IP65 (terminal dependent)
  • Applicable standard: EN 60730-1
  • Weight: ≈85 g

Catalogs

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Mechanical Pressure Switch

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