Mastercool 53000-300 High Pressure Replacement Gauge 300 Bar

Replacement High-Pressure Gauge 300 Bar/4400 Psi — For Nitrogen Regulators

The Mastercool 53000-300 is a replacement high-pressure gauge designed for nitrogen pressure testing regulators. Featuring a 300 bar (4400 psi) maximum pressure rating, this professional-quality gauge ensures accurate pressure monitoring during nitrogen leak testing operations on HVAC/R and automotive A/C systems.

Key Features

• 300 Bar / 4400 Psi: High-pressure rating for nitrogen testing
• Replacement Gauge: Direct replacement for worn or damaged gauges
• Accurate Pressure Monitoring: Reliable pressure readings
• Professional Quality: Built for daily workshop use
• Durable Construction: Long-lasting performance

Technical Specifications

• Model: 53000-300
• Type: Replacement high-pressure gauge
• Maximum Pressure: 300 bar (4400 psi)
• Application: Nitrogen pressure testing regulators
• Barcode: 700376115109
• SKU: 53000-300
• HS Code: 84148080

Applications

• Replacement gauge for nitrogen pressure testing regulators
• HVAC/R system leak testing
• Automotive A/C leak testing
• Commercial refrigeration leak detection
• Professional nitrogen pressure testing

Compatible Nitrogen Regulator Kits

• 53030 — Nitrogen Pressure Testing Regulator Kit UK (BS3)
• 53025-001-A — Nitrogen Regulator Kit Automotive (without bottle)
• 53035-001 — Nitrogen Regulator Kit HVAC (without bottle & adapter UK)
• 53035-001-A — Nitrogen Regulator Kit Automotive (without bottle & adapter UK)
• 53055-001 — Complete ITA Regulator Kit (without bottle & adapter)

Related Replacement Gauges

• 53000-70 — Low-Pressure Gauge for Nitrogen Regulator (70 bar)
• 53000-42 — Leak Testing Gauge with Pointer for 53042

Why Choose the 53000-300?

• High Pressure Rating: 300 bar/4400 psi for nitrogen testing applications
• Direct Replacement: Fits Mastercool nitrogen regulators
• Accurate Readings: Reliable pressure monitoring
• Professional Quality: Built to Mastercool standards
• Durable: Long-lasting construction for daily use

Perfect For

• HVAC/R service technicians
• Automotive A/C specialists
• Commercial refrigeration technicians
• Workshops performing nitrogen leak testing
• Mobile service operations
• Maintenance and repair of nitrogen regulators

Nitrogen Pressure Testing

Nitrogen pressure testing is the professional standard for leak detection in HVAC/R and automotive A/C systems because:

• Safety: Nitrogen is inert and non-flammable
• Cost-Effective: Detect leaks before charging with expensive refrigerant
• Professional Standard: Industry best practice
• System Protection: Identifies leaks before refrigerant is introduced
• Environmental: No refrigerant emissions during leak testing

When to Replace

Replace the pressure gauge when you notice:

• Inaccurate pressure readings
• Damaged or cracked gauge face
• Needle sticking or not returning to zero
• Visible damage to gauge body
• Leaking connections

Maintenance

• Regular Inspection: Check gauge condition and accuracy periodically
• Calibration: Verify accuracy against known pressure source
• Storage: Store the regulator in a clean, dry environment
• Protection: Avoid dropping or impact damage to gauge
• Replacement: Replace the gauge when accuracy is compromised

Safety Guidelines

• Never exceed maximum pressure rating of 300 bar/4400 psi
• Always use nitrogen for pressure testing, never oxygen or compressed air
• Ensure proper gauge installation and sealing
• Follow the manufacturer's recommendations for test pressure
• Use appropriate personal protective equipment

Professional Quality: Mastercool replacement gauges are built to the same high standards as original equipment, ensuring continued reliable performance of your nitrogen pressure testing regulator. The 53000-300 high-pressure gauge maintains the accuracy essential for professional leak detection.