Air conditioning refrigerant fluorine filling tube three color filling tube R22 R134 R410a refrigerant filling tube fluorine filling tube

The three-color fluorinated hose is a special connecting hose used for refrigerant charging/recovery in air conditioning maintenance. The high and low pressure interfaces are distinguished by color (blue – low pressure, red – high pressure, yellow – refrigerant tank). Its core function is to safely connect the equipment and the refrigerant tank to achieve accurate charging and system
pressure monitoring.

1. Components:
– Three-color hoses: blue (low pressure), red (high pressure), and yellow (refrigerant tank connection);
– Anti-backflow ejector valve: A built-in check valve prevents refrigerant backflow;
– Pressure-resistant hose: Rubber/nylon reinforcement (pressure resistance ≥ 3.5 MPa) for refrigerant corrosion resistance;
2. Core Functions:
– Safe Connection: Standardized colors prevent misconnection (blue for low-pressure valves, red for high-pressure valves, and yellow for refrigerant tanks);
– Pressure Monitoring: Real-time reading of high and low pressure values via a gauge valve assembly;
3. Applications:
– Refrigerant filling, vacuum pumping, and refrigerant recovery for air conditioning/refrigeration equipment;
– System leak detection and pressure testing;
4. Safety Features:
– Explosion-proof design: Tear-resistant hose and detachable connection;
– Operating Instructions: The hose must be purged of air before use to prevent the ingress of moisture and impurities;
– Do not mix refrigerants: Refrigerants such as R22 and R410A require dedicated tubing (marked on the tubing).

This accessory is a fundamental safety tool for refrigeration maintenance. Improper use can result in refrigerant leaks, system contamination, or personal injury.