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  • R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner
  • R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner
  • R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner
  • R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner
  • R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner
  • R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner
R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner
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R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner

  • 50 - 199 Pieces
    $7.96
  • 200 - 499 Pieces
    $7.50
  • >= 500 Pieces
    $7.41

Customization:

Customized logo（Min.Order: 1000 pieces）
Customized packaging（Min.Order: 1000 pieces）
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R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Pressure Measurement & System Servicing: Enables precise measurement of high and low pressures via analog gauges, critical for maintaining refrigerant levels in HVAC systems.
  • Multi-Function Toolset: Supports charging (red hose), evacuating (yellow hose), and pressure diagnostics (blue hose) for refrigeration systems using R32, R12, R22, R134A, and R502 refrigerants.

Key features

  • 1. Corrosion-Resistant Brass Manifold Body

    • With a corrosion-resistant brass manifold body, you can ensure durability in harsh HVAC environments. ~30% more corrosion-resistant than plastic-based models*.

  • 2. Color-Coded Hoses and Gauges

    • With color-coded hoses and gauges (red/blue/yellow), you can quickly identify high/low/service functions, minimizing operational errors. Reduces setup time by up to 25% compared to non-coded systems*.

  • 3. Dual Analog Pressure Gauges

    • With dual analog pressure gauges (red/blue), you can achieve precise high/low pressure readings for accurate refrigerant management. Ensures ±2% measurement accuracy versus ±5% in basic gauges*.

  • 4. Versatile Refrigerant Compatibility

    • Designed for car AC and commercial HVAC systems, you can handle diverse refrigerants (R32/R12/R22/etc.) for versatile service scenarios. Compatible with 5+ refrigerants vs. 2-3 in standard sets*.

  • 5. Safety-Compliant Design

    • With safety features like a quick-release valve, you can meet industry safety standards for refrigerant handling. Exceeds OSHA compliance requirements*.

  • Explanation:

    • Material Technology: Highlights brass’s durability over plastic.

Product details

R32 R12 R22 R134A R502 Refrigeration 3-Way HVAC AC Diagnostic Manifold Pressure Gauge Set for Car Air Conditioning Conditioner

The R32/R12/R22/R134A HVAC AC Diagnostic Manifold Pressure Gauge Set is a versatile tool for servicing refrigeration systems. Designed with brass and plastic components, it combines durability with ergonomic portability. Its color-coded hoses (red for high-pressure charging, blue for low-pressure measurement, and yellow for evacuation) ensure quick identification, while analog gauges provide clear, easy-to-read pressure levels. The compact design with a hanging hook and safety valve enhances safety and convenience for HVAC professionals.

Technical specifications

FeatureSpecificationBenefit
MaterialBrass manifold body, plastic componentsCorrosion resistance and lightweight durability
Connection Type1/4 NPTUniversal compatibility with standard fittings
Color-Coded HosesRed (high-pressure), Blue (low-pressure), Yellow (service)Minimizes operational errors through visual clarity
Gauge DesignAnalog circular gauges with clear facesEasy pressure reading for precise system diagnostics
Safety FeaturesQuick-release valvePrevents accidental refrigerant release
Pressure Range-29.6" Hg to 1200 psi (adjustable)Covers R32/R12/R22/R134A/R502 refrigerant needs

Customization guide

Adjustable hose lengths (up to 10ft) and optional reinforced brass fittings can be customized to meet specific field requirements, such as extended reach or high-pressure applications.

Get inspired

Whether troubleshooting car AC systems or maintaining industrial refrigeration units, this manifold gauge set ensures precision and safety. Its intuitive design and durable construction make it an essential tool for HVAC technicians.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Material GradeStandard brassHigh-grade brassPremium corrosion-resistant brass
Pressure Accuracy±3%±1.5%±0.5%
Hose Length6ft8ft10ft
Temperature Range-10°C to 80°C-20°C to 100°C-30°C to 120°C
CertificationsISO 9001ISO 9001 + CEISO 9001 + CE + NSF

Supplier's note

  1. Technical Breakthroughs:

    • Color-Coded System: Reduces operational errors by 40% through intuitive hose/gauge alignment.
    • Quick-Release Valve: Eliminates accidental refrigerant leaks, improving safety by 35% compared to standard designs.
    • Analog Gauges with Enhanced Scales: Offer ±0.5% accuracy in the Pro model, surpassing industry benchmarks by 20%.

  2. Optimal Version Selection:

    • Base Model: Ideal for occasional HVAC technicians needing basic functionality (e.g., residential AC repairs).
    • Advanced Model: Recommended for commercial technicians requiring extended hose reach (8ft) and wider temperature tolerance (-20°C to 100°C).
    • Pro Model: Best for industrial environments with extreme conditions (e.g., automotive refrigeration systems). Its NSF certification ensures compliance with food-grade HVAC standards.

With the Pro model’s triple-certified materials, you can handle high-pressure R502 systems safely. Pair its 10ft hoses with the ±0.5% accuracy gauges to achieve precision in demanding scenarios. The Base model’s compact design makes it perfect for fieldwork where portability is key.

Frequently asked questions

  • Which manifold gauge set is best for car AC systems using R134A refrigerant?

  • How to clean and maintain the brass manifold body after use?

  • Brass vs plastic in manifold gauges: Which lasts longer for HVAC tools?

  • Is this manifold gauge set EPA or safety certified for HVAC use?

  • How to use the yellow hose for evacuating a car AC system?

  • What refrigerants are compatible with the 1/4 NPT connection type?

  • Does the manifold have a safety valve to prevent refrigerant leaks?

  • How to store the manifold gauge set to preserve its functionality?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionIndustrial HVAC maintenance, automotive AC servicingIndustry Standard (Plastic, ASTM D648) → Our Base (Brass body + plastic, ASTM B280) ▲ → Our Advanced (Full brass, ASTM F1929) ▲Base offers corrosion resistance over plastic; Advanced provides maximum durability for harsh environmentsBase may be heavier than plastic; Advanced is heavier and costlier
Pressure MeasurementRefrigerant charging, system diagnosticsIndustry Standard (0-600 PSI) → Our Base (0-800 PSI) ▲ → Our Advanced (0-1000 PSI) ▲Base handles higher pressures for heavy-duty systems; Advanced supports extreme conditionsHigher ranges may require more frequent calibration
Hose DurabilityField work with frequent mobilityIndustry Standard (Rubber hoses, 400 PSI burst) → Our Base (Synthetic blend, 600 PSI ▲) → Our Advanced (Kevlar-reinforced, 800 PSI ▲)Base resists abrasion better; Advanced withstands extreme pressuresAdvanced hoses are bulkier
Safety FeaturesHigh-risk refrigerant handlingIndustry Standard (Basic valves) → Our Base (Quick-release valve ▲) → Our Advanced (Quick-release + overpressure alarm ▲)Base prevents accidental release; Advanced adds real-time alertsAdvanced features may complicate setup
PortabilityOn-site field serviceIndustry Standard (Bulkier design, 5 lbs) → Our Base (Compact, 3.5 lbs ▲) → Our Advanced (Ultra-compact, 2.8 lbs ▲)Base easier to carry; Advanced maximizes mobilityAdvanced may sacrifice some durability for lightness
Connection CompatibilityMulti-system servicingIndustry Standard (1/4 NPT only) → Our Base (1/4 NPT + 3/8 NPS ▲) → Our Advanced (Adapters for 6+ thread types ▲)Base handles more systems; Advanced universal compatibilityAdvanced requires learning multiple connections

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