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  • LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump
  • LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump
  • LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump
  • LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump
  • LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump
  • LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump
LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump

LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump

  • 5 - 49 Pieces
    $30
  • 50 - 499 Pieces
    $25
  • 500 - 999 Pieces
    $23
  • >= 1000 Pieces
    $21

Customization:

Customized logo（Min.Order: 1000 pieces）
Customized packaging（Min.Order: 1000 pieces）
Graphic customization（Min.Order: 1000 pieces）
View product details

LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Automatic Pressure Regulation: The LEFOO LF55 pressure switch automatically controls and stabilizes water or air pressure in systems, featuring an adjustable differential setting to maintain optimal performance.
  • Dual Pressure Monitoring: Equipped with a dual-scale pressure gauge (bar/psi), it provides real-time pressure readings in both metric and imperial units, enhancing versatility across global applications.

Key features

  • 1. Corrosion-Resistant Brass Connection Port

    • With a corrosion-resistant brass connection port and durable metal casing, you can ensure reliable operation in harsh environments with water or air media, outperforming plastic-based models*

  • 2. Dual-Pressure Scale for Global Compatibility

    • With a dual-pressure scale (bar/psi), you can easily monitor pressure in both units without conversion, reducing setup time by up to 50% compared to single-scale models*

  • 3. High-Voltage Performance for Industrial Use

    • With a 250V rating and SPDT contact arrangement, you can handle high-power systems like industrial pumps or HVAC units, surpassing standard 120V models in heavy-duty applications*

  • 4. Commercial-Grade Reliability for Continuous Operation

    • Designed for commercial HVAC and industrial pumps, this switch ensures continuous operation in demanding environments, reducing downtime compared to residential-grade switches*

  • 5. Certified for Global Safety Standards

    • With CQC and CE certifications, you can ensure compliance with safety standards in China and the EU, enhancing trust over non-certified alternatives*

Product details

LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch Water Pump

The LEFOO LF55 Adjustable Differential Automatic Water Pressure Switch is a robust industrial solution designed for precise pressure control in refrigeration, HVAC, steam boilers, pumps, and air compressor systems. With a durable plastic/metal casing and a dual-scale pressure gauge (0-200 bar / 0-3000 psi), it ensures reliable performance across diverse applications. Certified to CQC standards and featuring an SPDT contact arrangement, this switch guarantees safety and compatibility with global systems.

Technical specifications

FeatureSpecificationBenefit
Pressure Range0-200 bar / 0-3000 psi (dual-scale)Seamless unit conversion for global use
MaterialDurable plastic/metal casing, brass portCorrosion resistance and long lifespan
CertificationsCQC, CE-compliantSafety assurance for industrial use
Voltage Compatibility250V rated, SPDT contactSafe operation in high-voltage systems
Media CompatibilityWater, airVersatile for fluid or gas applications

Customization guide

Adjustable differential pressure settings allow users to calibrate the switch to specific operational ranges (e.g., 0.5–1.5 bar). Customizable connection port materials (brass, stainless steel) and casing durability levels can be tailored to meet extreme temperature or corrosion-resistant requirements.

Get inspired

With its dual-pressure scale and rugged design, the LEFOO LF55 excels in HVAC systems where quick pressure adjustments are critical. The CE certification ensures compliance with EU safety standards, making it ideal for global industrial deployments.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Pressure Range0-150 bar0-200 bar0-250 bar (+25%)*
Casing MaterialReinforced plasticMetal alloyStainless steel
Max Voltage250V250V380V (+52%)*
CertificationsCQCCQC + CECQC + CE + UL

Supplier's note

  1. Technical Breakthroughs:

    • Dual-Scale Gauge: Enables real-time monitoring in bar/psi units without conversion tools.
    • Adjustable Differential: Reduces energy waste by 20% in HVAC systems through precise pressure control.
    • Stainless Steel Pro Model: Achieves 3x corrosion resistance compared to standard models, ideal for marine or chemical environments.

  2. Optimal Version Selection:

    • Base Model: Best for residential HVAC or small-scale pumps requiring basic pressure control.
    • Advanced Model: Suitable for commercial boilers or industrial air compressors needing metal durability.
    • Pro Model: Tailored for extreme environments (e.g., offshore platforms) where high voltage (380V) and chemical resistance are critical. With its tripled corrosion resistance, the Pro version ensures safe handling of corrosive media like seawater or industrial fluids.

Frequently asked questions

  • Which applications is the LEFOO LF55 Pressure Switch best suited for in industrial settings?

  • How do I clean and maintain the metal connection port of the LEFOO LF55?

  • Why is the metal connection port better than plastic in high-pressure HVAC systems?

  • Can the LEFOO LF55’s pressure range be customized for specific systems?

  • Is the LEFOO LF55 certified for safety in commercial water systems?

  • What makes the LEFOO LF55 suitable for high-pressure water pump systems?

  • How often should I inspect the SPDT contacts for optimal performance?

  • Does the LEFOO LF55 support both water and air media seamlessly?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Pressure RangeIndustrial HVAC, BoilersIndustry: 0-100 bar (ISO 10775);
Our Base: 0-200 bar (▲100%);
Our Advanced: 0-300 bar (▲300%)		Base supports high-pressure HVAC systems; Advanced handles extreme industrial needsIndustry standard insufficient for heavy-duty applications
Voltage RatingHigh-Voltage PumpsIndustry: 220V (IEC 60947-5-1);
Our Base: 250V (▲13.6%);
Our Advanced: 300V (▲36.4%)		Meets higher voltage demands in industrial settingsIndustry may not meet newer high-voltage requirements
Media CompatibilityAir Compressors, Water PumpsIndustry: Water only (ASTM F1510);
Our Base: Water & Air (▲Diverse);
Our Advanced: +Oil (▲Expanded)		Supports dual media; Advanced adds oil compatibilityIndustry limited to water-only systems
Contact ArrangementMulti-Signal Control SystemsIndustry: SPST (IEC 60947-5-1);
Our Base: SPDT (▲Dual Control);
Our Advanced: 3PDT (▲Triple Control)		Allows more control options; Advanced offers even more versatilityIndustry standard may require additional components
CertificationsGlobal Deployment (EU, China, US)Industry: CE (EN 60947);
Our Base: CE + CQC (▲Dual Compliance);
Our Advanced: +UL (▲Triple Compliance)		Meets EU/China standards; Advanced adds US certificationIndustry lacks regional certifications
Durability & MaterialHarsh Environments (Construction Sites)Industry: Plastic (ISO 1043);
Our Base: Durable Plastic/Metal (▲Sturdy		MIL-STD-810G);
Our Advanced: Full Metal (▲Rugged		MIL-STD-810G)

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