General · Lesson 7 of 40
Fluid Lines and Fittings
Rigid tubing and flexible hose: materials, identification and sizes, cutting, bending, flaring and beading, the main fitting types, torque and witness marks, and how to inspect, repair, test and install lines and hoses.
11 min read
Last reviewed
Part of A&P Complete
This lesson is in the full course
- Match common tubing and hose materials to the systems and pressures they suit
- Identify tubing by size, wall thickness, color code and line markers, and work out a tube's inside diameter
- Describe how rigid tubing is cut, bent, flared and beaded, and the limits that make a tube unacceptable
- Explain why fittings are torqued to prescribed values and how flareless fittings are tightened
- Apply the handbook's rules for installing, inspecting and testing flexible hose