Pneumatic fittings are components used to join sections of pipes, tubes, and hoses in pneumatic systems (pressurized gas). They are designed to have tighter seals and lower pressure requirements than hydraulic fittings, and are often used in pneumatic logic control systems and instrumentation. Pressure fittings are widely used in all types of compressed air systems, but they are most commonly found in applications with cylinders, tools, and pneumatic equipment. They can also be used for aquatic applications, however additional measures must be taken to ensure safety (controlled overpressure, compatibility with water, insertion ring, etc.).
As a general rule, it is always better to have a single longer hose than to have several hoses connected together. The ends of the hoses can be used to connect the couplings to the hoses or (potentially) to connect two hoses together. Uneven Y connections are available for connecting a larger diameter hose to two smaller diameter hoses. Unequal Union T-connections can also be used for connecting a smaller diameter hose to two larger diameter hoses.
When selecting the right type of fitting for your air-operated system, it is important to consider the type of material that will be used for the connection. Common materials include brass, stainless steel, aluminum, and plastic. Each material has its own advantages and disadvantages depending on the application. For example, brass fittings are corrosion-resistant and durable but may not be suitable for high-pressure applications.
Stainless steel fittings are strong and durable but may be more expensive than other materials. Aluminum fittings are lightweight and cost-effective but may not be suitable for high-temperature applications. Plastic fittings are lightweight and cost-effective but may not be suitable for high-pressure applications. It is also important to consider the type of connection that will be used.
Common types of connections include threaded connections, compression connections, barbed connections, and push-to-connect connections. Threaded connections are the most common type of connection and are typically used for low-pressure applications. Compression connections are typically used for high-pressure applications and require special tools for installation. Barbed connections are typically used for low-pressure applications and require clamps or other securing devices for installation.
Push-to-connect connections are typically used for low-pressure applications and require no special tools or clamps for installation.