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  1. Detection - Measurement
  2. Flow, Pressure and Level Measurements
  3. Mechanical pressure switch
  4. ZHEJIANG LEFOO CONTROLS CO., LTD
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Mechanical pressure switch LF08H
relativefor hydrocarbonsfor air

Mechanical pressure switch - LF08H - ZHEJIANG LEFOO CONTROLS CO., LTD - relative / for hydrocarbons / for air
Mechanical pressure switch - LF08H - ZHEJIANG LEFOO CONTROLS CO., LTD - relative / for hydrocarbons / for air
Mechanical pressure switch - LF08H - ZHEJIANG LEFOO CONTROLS CO., LTD - relative / for hydrocarbons / for air - image - 2
Mechanical pressure switch - LF08H - ZHEJIANG LEFOO CONTROLS CO., LTD - relative / for hydrocarbons / for air - image - 3
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Characteristics

Technology
mechanical
Pressure type
relative
Fluid
for water, for oil, for hydrocarbons, for air
Protection level
IP67
Applications
HVAC, for cooling compressors, for the food industry, for the automotive industry, for the pharmaceutical industry, for the energy sector
Other characteristics
adjustable, high-pressure, low-pressure
Pressure range

Min.: 0.2 bar
(2.9 psi)

Max.: 65 bar
(942.75 psi)

Switching power: current

3 A, 6 A

Burst pressure

Min.: 345 bar
(5,003.8 psi)

Max.: 345 bar
(5,003.8 psi)

Process temperature

Min.: -40 °C
(-40 °F)

Max.: 135 °C
(275 °F)

Description

Product overview
This pressure switch is designed for cooler fans and other pressure-control applications requiring frequent start cycles and extended service life. It is suitable for systems where reliable pressure switching and environmental protection are required.

Parameters
Model: LF08H
Pressure setting range (gauge): 0.02 MPa to 6.5 MPa; low-pressure versions < 1.0 MPa; high-pressure versions ≥ 1.0 MPa

Operating pressure / Tolerance / Withstand maximum pressure
0.02 ≤ p < 0.6 MPa — Tolerance: ±0.03 MPa — Withstand maximum pressure: 1.5 MPa
0.6 ≤ p < 1.0 MPa — Tolerance: ±0.05 MPa — Withstand maximum pressure: 2.0 MPa
1.0 ≤ p < 2.0 MPa — Tolerance: ±0.07 MPa — Withstand maximum pressure: 3.0 MPa
2.0 ≤ p < 3.0 MPa — Tolerance: ±0.10 MPa — Withstand maximum pressure: 4.0 MPa
3.0 ≤ p < 4.0 MPa — Tolerance: ±0.15 MPa — Withstand maximum pressure: 5.5 MPa
4.0 ≤ p < 5.0 MPa — Tolerance: ±0.20 MPa — Withstand maximum pressure: 6.5 MPa
5.0 ≤ p < 6.5 MPa — Tolerance: ±0.25 MPa — Withstand maximum pressure: 8.0 MPa

Burst pressure
Burst pressure (gauge): 34.5 MPa × 1 min — no damage, no leakage

Operating temperature
Ambient temperature — Low pressure: -40℃ to 65℃; High pressure: -40℃ to 120℃
Medium temperature — Low pressure: -40℃ to 80℃; High pressure: -40℃ to 135℃

Electrical parameters
24–250 VAC / 0.02–6 A; 8–36 VDC / 0.02–3 A; 600 VAC / 0.02–3 A
Also available: 120 VAC / 6 A; 250 VAC / 6 A (CE)

Compatible media
Air, water, oil, lubricants, refrigerants and similar hydrocarbons

Service life
Mechanical life: 100,000 operations; Electrical life: 30,000 operations (CE). Customizable for extended life options

Ingress protection & Certification
IP67
Certification: CE

Conversion
1 bar = 14.5 psi; 1 MPa = 10 bar

Applications
  • HVAC
  • Cleanroom systems
  • Refrigeration
  • Building automation
  • Water & wastewater
  • Food & beverage
  • Oil & gas
  • Petrochemicals
  • Machinery manufacturing & automation
  • Engineering equipment
  • Home appliances
  • Power & energy
  • Agriculture
  • Chemical processing
  • Laboratory & medical devices


Dimensions & Documents
Dimensional drawing and product datasheet (PDF) available in associated documentation

Characteristics / Technical specifications
  • Model: LF08H
  • Pressure setting range: 0.02 MPa to 6.5 MPa
  • Operating tolerances: ±0.03 to ±0.25 MPa depending on set range
  • Withstand maximum pressure by range: 1.5 MPa to 8.0 MPa depending on set range
  • Burst pressure: 34.5 MPa × 1 min (no damage, no leakage)
  • Operating temperatures: see ambient and medium temperature ranges above
  • Electrical ratings: multiple AC/DC options as specified
  • Compatible media: air, water, oil, lubricants, refrigerants, similar hydrocarbons
  • Mechanical life: 100,000 cycles; Electrical life: 30,000 cycles (CE); options for extended life
  • Ingress protection: IP67
  • Certification: CE

Catalogs

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Mechanical Pressure Switch

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.