NJ 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.