This course dives further into piping systems by discussing the smaller components that make piping systems function, including fittings, common and special valves, strainers, filters, traps, and accessories. Preventative and repair maintenance for these components are also discussed.

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.


This course gives you the opportunity to earn IACET CEUs through our parent company Certus. As an IACET Accredited Provider, Certus offers IACET CEUs for its learning events that comply with the ANSI/IACET Continuing Education and Training Standard. To earn IACET CEUs, you must:

  • Complete all lessons in the course,
  • Correctly answer every quiz question posed through the course, and
  • Complete the course evaluation.

Assessment Information: This online course presents each section with commentary, a graphic illustration or photograph, and requires the learner to answer multiple choice questions after reviewing the content. The learner must complete all multiple-choice questions for each section correctly to get IACET CEUs, a certificate of completion, or state license renewal credit for the course. If the learner's first response is incorrect, learners will be immediately allowed to answer the question again until the correct answer is chosen. Question choices are randomized, so each participant will have a unique testing experience

Prerequisites: This course has no prerequisites.

Course Demonstration Video

  • Course ID(s): 25-2021
  • Approved By: Maine Drinking Water Program

Instructor Bio

Ralph Stevens

Ralph Stevens is a water Subject Matter Expert, licensed in California, Nevada and Arizona as a Grade 3 Wastewater Treatment Plant Operator. Ralph has worked in wastewater for almost 50 years, starting as an operator in a wastewater treatment plant and serving most recently as the Maintenance Reliability Supervisor for the Clark County Water Reclamation District. He is a certified Class Trainer for the California Water Environment Association (CWEA) and has served as the Operations and Maintenance Chairperson for the same organization. He has won a number of awards for his work, including CWEA Electrical and Instrumentation Person of the Year (2015), Safety Plant of the Year (2017), and the WEF Burke Safety Award (2019). Ralph goes out of his way to help and protect staff and the environment.