Exam 14: Piping and Valves

What can cause leakage and make the valve difficult to open or close?

What type of valve is a flow-regulating device that uses a flow-control element shaped like a hollowed out ball, attached to an external handle, to increase or decrease flow?

What piping is connected using male and female threads?

What type of valve is a flow-regulating device that uses a disc-shaped flow-control element to increase or decrease flow?

What type of valves are used in service as single-direction flow control?

What can cause damage to the valve to the point that it will not seat and stop flow when closed?

What construction material can be used in high-temperature applications?

Which of the following is the symbol for a safety valve?

What causes valve stem seizure or thread damage makes the valve difficult to open and close?

What safety device opens more slowly and with less volume?

What type of valve is flow-regulating device that uses a flexible, chemical resistant, rubber-type diaphragm to control flow instead of a typical flow-control element?

What valve should be used if the fluid passing through is very thick or corrosive?

What type of fitting allows four pipes to be connected together at 90-degree angles?

What is the connection method of choice for critical service piping?

What can result from improper material selection?

What is the most common type of material for piping?

What type of fitting is a short length of pipe with threads on both ends?

What should you do to verify valve position?

What type of weld is used if one pipe is small enough to fit snugly inside the other?

What type of fitting fits over the open end of a pipe to seal it?