Maintain the High-Pressure Lines and Components

Maintaining proper cone angles on the body and tube is critical in creating a high-pressure seal. The seal is created when the angled metal edges of the tube cone seat press against the metal edges inside the body cone. The body cone inside has a slightly larger angle of the high-pressure fitting. This slight difference in angles between the body and tube cones creates a tight, metal-to-metal seal between both components. See 401542, Diagram, Exploded, HP System Components, ProtoMAX for part numbers. See the Maintenance Schedule for the recommended frequency for this task.


To avoid injury or damage, always make sure there is no high-pressure water in the lines, see Prepare the High-Pressure Lines for Repair before repairing high-pressure lines or components.