Main types and application scenarios
Pneumatic connectors
Function: Used for connecting compressed air pipelines, such as the connection between the exhaust port of the main unit and the oil-gas separator, or between the cooler and the air storage tank.
Common types:
Threaded connectors (such as G threads, NPT threads): Sealed by threads, suitable for high-pressure gas pipelines (usually 10-16 bar).
Quick-connect connectors: Used for temporary or low-pressure pipeline connections, facilitating quick disassembly and assembly (such as temporary test interfaces for pressure gauges and sensors).
Material: Mostly brass, stainless steel or high-strength engineering plastics, with high-pressure resistance and corrosion resistance properties.
Hydraulic/oil circuit connectors
Application: Connects the lubrication circuit, such as the connection between the oil pump and the cooler, or between the temperature control valve and the main unit.
Features: Requires strict sealing to prevent leakage, usually using conical surface sealing or O-ring sealing, compatible with the chemical properties of the special lubricating oil for air compressors.
Common forms: Socket-type joints, flange connectors (for large units), expansion-type joints, etc.
Electrical connectors
Function: Transmits electrical signals or power, such as the connection between the control system and sensors (pressure, temperature), motor junction boxes, and solenoid valves. Type:
Circular connectors (such as M12, M16): Used for sensor signal transmission, with waterproof and dustproof capabilities (IP65/IP67).
Terminal blocks, plugs and sockets: Used for power connections within motors and control cabinets, some with locking structures to prevent detachment.
Features: Resistant to vibration, anti-electromagnetic interference, adaptable to temperature and humidity changes in industrial environments.
Mechanical structure connectors
Application: Mechanical connection of equipment components, such as the fixed connection between the main unit cover and the housing, and the cooling device and the frame.
Form: Bolt groups, flange connectors, locating pins, etc., to ensure component assembly accuracy and structural stability.
Core features of the original factory connectors
Precise adaptation: Designed based on the specific model (such as GA series, G series, etc.) of pipeline dimensions, pressure ratings and interface standards to ensure connection sealing and compatibility.
Reliable materials:
Pneumatic / hydraulic connectors use corrosion-resistant materials (such as 316 stainless steel for humid environments) to prevent water vapor or lubricating oil corrosion in compressed air.
Electrical connectors use temperature-resistant flame-retardant materials to meet industrial safety standards.
Excellent sealing performance: Equipped with original factory seals (such as nitrile rubber O-rings, PTFE sealing tape), with extremely low leakage rate, meeting the high-pressure sealing requirements of air compressors.
High durability: Tested for vibration and pressure cycling, with a service life matching the entire machine, reducing maintenance frequency.
Common problems and replacement precautions
Fault manifestations:
Gas / oil leakage (loose joints, aging sealing components).
Signal interruption or poor contact (oxidation of electrical connectors, bent pins).
Loose connection parts or abnormal noise (loosening of mechanical connectors' bolts).
