53123-A
Refillable Universal UV Dye/Oil Injector — Professional Leak Detection
The Mastercool 53123-A is a refillable piston-type UV dye and oil injector designed for professional HVAC/R and automotive A/C leak detection. Featuring a 60ml capacity, auto shut-off valve adapter, and 1/4" connection, this versatile injector allows you to inject UV dye or oil into A/C systems for accurate leak location. Simply connect to the low side of the system and twist the handle until you reach the desired amount.
Key Features
- Refillable Design: Reusable injector reduces waste and cost
- 60ml Capacity: Sufficient volume for multiple applications
- Piston-Type Operation: Precise control of injection amount
- Auto Shut-Off Valve Adapter: Prevents refrigerant loss during injection
- 1/4" Connection: Standard SAE fitting for universal compatibility
- Dual Purpose: Inject UV dye or oil as needed
- Easy Operation: Twist handle to inject desired amount
- Professional Quality: Built for daily workshop use
Technical Specifications
- Model: 53123-A
- Type: Refillable piston-type UV dye/oil injector
- Capacity: 60ml (2 oz)
- Connection: 1/4" SAE with auto shut-off valve adapter
- Compatible Refrigerants: R134a and other standard refrigerants
- Includes: Injector with auto shut-off valve adapter (dye not included)
- Barcode: 700376102765
- SKU: 53123-A
- HS Code: 84189910
Applications
- UV dye injection for leak detection
- Oil injection for A/C system lubrication
- HVAC/R system leak diagnostics
- Automotive A/C leak detection
- Commercial refrigeration leak testing
- Professional A/C service and maintenance
Related Injector Models
With UV Dye Included:
- 53123 — Refillable Universal Dye Injector with auto shut-off valve adapter and 2 oz bottle of concentrated A/C dye (25 applications)
R134a Specific Models:
- 53134 — Refillable Dye Injector with R134a 13mm connection and 2 oz bottle of concentrated A/C dye (25 applications)
- 53134-A — Refillable Dye Injector (without dye) with R134a 13mm connection
Alternative Connection:
- 53322 — Refillable Dye Injector with 1/4" auto shut-off valve connection and 2 oz bottle of concentrated A/C dye (25 applications)
R1234yf Version:
Replacement Hose:
Complete UV Leak Detection Kits:
Why Choose the 53123-A?
- Refillable: Cost-effective and environmentally friendly
- Versatile: Inject UV dye or oil as needed
- Precise Control: Piston-type design for accurate dosing
- Auto Shut-Off Valve: Prevents refrigerant loss during injection
- Universal Compatibility: 1/4" SAE connection works with most systems
- Professional Quality: Built for daily workshop use
- Easy to Use: Simple twist-handle operation
- 60ml Capacity: Sufficient for multiple applications
Perfect For
- HVAC/R service technicians
- Automotive A/C specialists
- Commercial refrigeration technicians
- Workshop and service centres
- Mobile A/C service operations
- Fleet maintenance facilities
- Professional leak detection operations
Operation
- Fill injector with UV dye or oil (up to 60ml capacity)
- Connect auto shut-off valve adapter to low-side service port
- Ensure A/C system is running or pressurised
- Twist handle slowly to inject desired amount into system
- Monitor injection amount (typically 1-2 oz for automotive A/C, more for larger systems)
- Disconnect injector when complete
- Allow dye to circulate through system (run A/C for 10-15 minutes)
- Use UV light to locate leaks (dye will fluoresce at leak points)
UV Dye Leak Detection Process
- Inject Dye: Use 53123-A to inject UV dye into A/C system
- Circulate: Run system for 10-15 minutes to distribute dye
- Inspect with UV Light: Use UV leak detection light to scan system
- Locate Leaks: Dye will fluoresce bright yellow-green at leak points
- Mark Leaks: Identify exact leak location for repair
- Repair: Fix identified leaks
- Verify: Re-inspect with UV light after repair
Refillable vs Disposable Injectors
Refillable (53123-A - This Model):
- Cost-effective for regular use
- Environmentally friendly - less waste
- Refill with your choice of UV dye or oil
- Professional quality construction
- Long-term investment for workshops
Disposable:
- Convenient for occasional use
- Pre-filled with dye
- No cleaning required
- Higher cost per application
The 53123-A refillable injector is ideal for professional workshops performing regular leak detection, offering significant cost savings over disposable injectors.
UV Dye Types
The 53123-A can be filled with various UV dyes:
- Universal A/C Dye: Works with all refrigerants
- POE Oil Compatible: For systems using polyolester oil
- PAG Oil Compatible: For systems using polyalkylene glycol oil
- Concentrated Dye: Typically 25 applications per 2 oz bottle
Always use UV dye compatible with your system's refrigerant and oil type.
Auto Shut-Off Valve Adapter
The included auto shut-off valve adapter provides several benefits:
- Prevents Refrigerant Loss: Valve closes when injector is disconnected
- Safe Operation: Minimises refrigerant emissions
- Convenient: No need to recover refrigerant before injection
- Professional Standard: Industry best practice for dye injection
Maintenance
- Cleaning: Rinse injector with appropriate solvent after each use
- Storage: Store in clean, dry environment
- Inspection: Check seals and piston for wear regularly
- Replacement Parts: Hose assembly available (53223-001D)
Safety Guidelines
- Always wear safety glasses when working with pressurised systems
- Ensure adequate ventilation
- Follow manufacturer's recommendations for dye quantity
- Do not overfill A/C system with dye
- Use appropriate UV dye for refrigerant and oil type
- Follow proper refrigerant handling procedures
Professional Quality: Mastercool UV dye injectors are built to professional standards for reliable, accurate leak detection in HVAC/R and automotive A/C service environments. The 53123-A refillable injector provides cost-effective, versatile dye and oil injection for professional leak detection operations.