MD Piping Systems: Part 2

After completing this course, the licensee should be able to: 

• Explain how expansion joints and vibration dampeners work.

• Contrast screwed, flanged, and welded connections, and tell why one type of joint may be prefer‐ red for a given application.

• Discuss the main functions of fittings. 

• Identify common pipe and tube fittings.

• Demonstrate a knowledge of the symbols used to represent joints and fittings on schematic drawings of piping systems.

• Explain the various ways in which valves control fluid flow in piping systems.

• Identify gate, globe, needle, ball, butterfly, plug, and check valves, and tell what each is used for. 

• Explain how and why quick-opening valves are used in industrial piping applications.

• Describe routine inspection, lubrication, and maintenance procedures for common valves.

• Explain how diaphragm valves work.

• Describe the functions of the three main types of blowdown valves. 

• Tell how regulating valves, relief valves, and reducing valves are used in industrial piping systems.

• Describe how different kinds of actuators open and close valves in response to pneumatic, hydraulic, or electrical signals.

• Discuss the protective uses of strainers and filters in piping systems.

• Explain how the relationship between pressure and temperature affects steam lines and creates the need for steam traps.

• Describe proper steam trap maintenance. 

• Explain how and why air-vent and water-drain valves are used.

• Describe how a heat exchanger works in a fluid system.

• Describe how different types of gauges are used to measure pressure and temperature in piping systems.

• Explain why rotary pressure joints are necessary in some applications.

• Describe the functions of accumulators and receivers. 

• Tell how actuators and intensifiers are used in fluid- power systems.

• Discuss the principles of preventive maintenance and repair maintenance as they apply to piping systems.