Valves are used to regulate the flow of fluids in piping systems. They are used to throttle flow, shut-off flow, reduce pressure, relieve pressure and prevent backflow. Valves are one of the simplest components in most piping systems, but the importance of proper valve selection cannot be overemphasized. Premature valve failure can result in loss of fluid pressure containment, which often leads to undesirable consequences. Before attempting to select a valve, the engineer should first gain a basic understanding of each type of valve and how it operates.
This course covers the fundamentals of valves, including the different types of valves commercially available and how they operate. The course material covers Module 4 - "Valves" in the DOE Mechanical Science Fundamentals Handbook, which is an excellent source of information in the Engineering Sciences.
The student must take a multiple-choice quiz consisting of twenty-five questions at the end of this course to obtain PDH credits.
Specific Knowledge or Skill Obtained
This course teaches the following specific knowledge and skills:
- The purpose of valves and the basic components of a valve, including the body, bonnet, disk, seat, etc.
- Construction, operation and relative merits of different types of throttling and shutoff valves, including gate, globe, ball, needle, butterfly, diaphragm, plug and pinch valves.
- Types of check valves, including swing, tilting disk, lift, piston and butterfly check valves.
- Construction and operating differences of relief valves and safety valves.
- Construction and principle of operation for different types of actuators, including manual, electric motor, pneumatic, hydraulic and solenoid actuators.
Click on the following link to the PDF document to review the course material before taking the quiz for credit.
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