Sigma Manifold gauges

Sigma Manifold Gauge Set – Professional HVAC/R Diagnostic Tool

Precision Pressure Monitoring for Refrigeration Systems

Industrial-grade gauge set for accurate system diagnostics, charging, and servicing across all HVAC/R applications.

Key Features:

✓ Dual 3″ color-coded gauges (blue/low, red/high)
✓ Rugged brass manifold with 4-way valve control
✓ Kink-resistant hoses with ball-valve ends
✓ Wide refrigerant compatibility (R22, R134a, R410A, R404A)
✓ PSI/kPa dual-scale readings

Technical Specifications:

• Pressure Ranges:
  • Low side: 0-250 PSI (-30inHg to 250 PSI)
  • High side: 0-800 PSI

• Hose Length: 60″ (1.5m)

• Connections: 1/4″ SAE flare

• Accuracy: ±2% full scale

• Included Accessories:
  • 3 service hoses
  • Thermal case
  • Quick-reference chart

Professional Applications:

✔ System pressure diagnostics
✔ Refrigerant charging/recovery
✔ Vacuum evacuation (-30inHg capability)
✔ Leak detection and troubleshooting
✔ Automotive AC servicing
✔ Heat pump maintenance

Why Choose Sigma Gauges?

• Instant system status assessment
• Durable enough for daily jobsite use
• Simplifies complex diagnostics
• Maintains calibration under vibration
• Trusted by HVAC technicians worldwide

Safety & Maintenance:

• Regular calibration recommended

• Store in protective case

• Replace hoses every 2 years

• Clean after each use

Available in standard and R134a-specific configurations!