What are the different types of push-in brass fitting

Push-In Brass Fitting is a connection element widely used in pneumatic systems, automation equipment, liquid transmission and industrial pipelines. With its easy installation, excellent sealing performance and strong durability, it has become an indispensable key component in the modern industrial field. According to its structural form, functional use and connection method, Push-In Brass Fitting can be divided into multiple types to adapt to different working conditions and system requirements.

Straight Union
Straight Push-In Brass Fitting is the most basic and most frequently used type of connector, mainly used for the straight connection of two sections of the same size pipeline.
Features:
Quick plug-in design, high pipeline installation efficiency;
Metal circlips and sealing rings are used inside to ensure a firm connection without leakage;
Compact appearance, suitable for space-constrained scenarios.
Common forms: Straight Male Connector, Straight Female Connector, Straight Tube Connector.
Application scenarios: automated assembly lines, packaging equipment, factory air compressor systems.

Elbow Fitting
Elbow fittings are used to achieve 90-degree turns in pipes, and are suitable for flexible pipe layout in complex structures or narrow spaces.
Features:
Precision machined brass body, high strength, and anti-deformation;
Adjustable direction type can adapt to different installation requirements;
More compact layout, effectively saving installation space.
Common forms: Male Elbow, Female Elbow, Push-In Elbow, Swivel Elbow.
Application scenarios: pneumatic control systems, CNC machine tools, and robot arm pipeline connections.

Tee Fitting
Tee-type quick-plug fittings are used in one-in-two-out or two-in-one-out scenarios to achieve fluid diversion or confluence operations.
Features:
Compact structure, one-piece brass material ensures pressure resistance;
Quick plug and thread can be combined with various interface forms;
Adapt to various pipe routing directions to improve system flexibility.
Common forms: Equal Tee, Male Branch Tee, Female Branch Tee, Reducer Tee.
Application scenarios: gas source distribution, vacuum system, multi-cylinder collaborative operation platform.

Cross Fitting
Cross Fitting is used in multi-pipe intersection occasions to achieve complex branch wiring.
Features:
Can connect four gas sources or liquid pipelines at the same time;
Strong sealing and pressure bearing capacity, suitable for high-load systems;
Precision brass casting, one-piece molding, excellent corrosion resistance.
Application scenarios: large-scale pneumatic distribution system, multi-channel sensor signal integration platform.

Reducer Fitting
Reducer fittings are suitable for connecting pipes with different outer diameters to achieve transition conversion of pipe diameters in the system.
Features:
Quickly complete size adaptation to avoid complex pipe changes;
Internal sealing structure adapts to pressure balance of different diameters;
Multiple caliber combinations, support customization.
Common forms: straight reducer, three-way reducer, thread reducer, etc.
Application scenarios: laboratory gas systems, non-standard customized equipment, energy-saving transformation projects.

Plug/Cap Fitting
Used for pipeline closure, test port blocking or temporary termination of pipeline connection.
Features:
Plug-in design, easy to disassemble and assemble;
Configured with sealing ring to avoid leakage;
Both threaded and quick-plug types are available.
Application scenarios: maintenance and repair blocking, terminal unused interface processing, fluid testing conditions.

Self-locking Fitting
Self-locking quick-plug fittings have an internal anti-loosening mechanism and can be used in industrial environments with high vibration and high-frequency plugging and unplugging.
Features:
The internal double locking mechanism prevents the tube from slipping during vibration;
Applicable to systems with unstable pressure or frequent operation;
Enhance system stability and reduce maintenance costs.
Application scenarios: rail transit, automated assembly lines, vibration test platforms.

Swivel Fitting
Swivel Push-In Brass Fitting can achieve a rotation function within a certain angle range, suitable for dynamic connections or active parts of equipment.
Features:
Brass plus nickel plating process, effective anti-corrosion and anti-rust;
The joint can rotate with the movement of the equipment during work to avoid hose knotting or breaking;
Precise structure and low rotation resistance.
Application scenarios: robot end effector, automatic filling machine, 3D printing robot arm.