Which fitting is popular for connecting hydraulic lines on transport category aircraft?

Permaswage fittings are a popular choice for connecting hydraulic lines on transport category aircraft due to their reliability and performance in high-pressure environments. These fittings provide a robust and leak-free connection, which is critical in aviation applications where safety and reliability are paramount. The Permaswage system utilizes a unique design that allows for a permanent, crimped connection, making it ideal for harsh operating conditions typically encountered in aircraft hydraulic systems.

Additionally, the installation of Permaswage fittings does not require special tools or processes that may be associated with other types of fittings, leading to more straightforward maintenance and assembly. Their ability to handle high-pressure hydraulics while maintaining a compact profile also makes them preferable for aircraft design, where space and weight savings are crucial factors.

This makes Permaswage fittings particularly suited for the rigorous demands of aerospace hydraulics, ensuring that hydraulic systems function effectively throughout the life of the aircraft.