Q Process Technology Equipment Ch. 5 Test A. Valve Disc B. Diaphragm valve C. Plug valve D. Gate valve E. Weir diaphragm valve F. Louvers G. Ball check valve H. Valve body I. Ball valve J. Check valve K. Block valve M. Bonnett N. Control valve O. Butterfly valve P. Damper Q. Valve seat R. Multi-port valve S. Throttling T. Swing check valve U. Needle valve V. Valve knocker W. Safety valve X. Rising stem valve Y. Straight through diaphragm valve Z. Valve stem a. Globe valve b. Handwheel c. Lift check valve d. Manual valve e. Non-rising stem value f. Packing g. Plug valve h. Relief valve 1.___a valve used to limit the flow of fluids to one direction; available in both horizontal and vertical designs. 2.___-a type of valve that uses a flow control element shaped like a hollowed-out ball attached to an external handle to control flow. 3__-a valve used to block flow to and from equipment and piping systems(e.g., during outage or maintenance). Block valves differ from some other types of valves, in that they should not be used to throttle flow. 4.__-a bell-shaped dome mounted on the body of a valve where the valve disc is held when the valve is opened. 5__-a type of valve that uses a disc-shaped flow control element to control flow. 6.___-a type of valve that allows flow in only one direction and is used to prevent reversal of flow in a pipe. 7.__-a valve through which flow is controlled by a signal from a controller. 8.__-a movable plate that regulates the flow of air or flue gases. 9.__-a type of valve that uses a flexible, chemical-resistant, rubber-type membrane (diaphragm) to control flow. 10.__-a long, slender shaft that attaches to the flow control element in a valve. 11.___-movable, slanted slats that are used to adjust the flow of air. 12.__ -a positive shutoff valve that uses a gate or guillotine that, when moved between two seats, causes a tight shutoff; it should never be used to throttle flow. 13.___ a type of valve that uses a disc and seat to regulate the flow of fluid. 14.__the mechanism that raises and lowers a valve stem to control the flow of fluid through a valve. 15.___ a valve, with a design similar to that of a globe valve, which allows flow in only one direction; it can be installed in both horizontal and vertical lines. 16.__a hand-operated valve that is opened or closed using a handwheel or lever. 17.__a device usually attached to a chain operator, used to facilitate the movement (opening or closing) of an overhead valve. 18.__ a section of a valve where the flow control element rests when the valve is completely closed; it is designed to maintain a leak-tight seal when the valve is shut. 19__-a valve that contains a dam-like device, sometimes called a saddle, that functions as a seat for the diaphragm. 20__-a type of valve used to split or redirect a single flow into multiple directions or direct flows from multiple sources to the same destination 21.__a variation of a globe valve that controls small flows using a long, tapered plug. 22.__a valve in which the stem does not rise through the handwheel when the valve is opened or closed. 23.__-a substance such as Teflon or graphite-coated material that is used inside the stuffing box to prevent leakage from occurring around the valve stem. 24.__-a type of valve that uses a flow control element shaped like a hollowed-out plug attached to an external handle to control flow. 25.__-a safety device designed to open slowly if the pressure of a liquid in a closed space, such as a vessel or a pipe, exceeds a preset level. 26.__a valve in which the stem rises out of the valve handwheel when the valve is opened. 27.__a safety device designed to open quickly if the pressure of a gas in a closed vessel exceeds a preset level. 28.__-a valve that contains a flexible membrane(diaphragm) that extends across the valve opening, long diaphragm movements are required to operate it; better for viscous liquids than the weir diaphragm valve. 29.___valve used to control the direction of flow and prevent contamination or damage to equipment caused by backflow. 30__-partially opening or closing a valve to restrict or regulate fluid flow rates. 31.__the lower portion of the valve, contains the fluids flowing through the valve. 32__-the section of a valve that attaches to the stem and that can fully or partially block the fluid flowing through the valve. Knowledge 33. (True or False) Gate valves are the most common type of valve designed for on/off service and NOT for throttling a process 34. Globe valves use a to regulate the flow: a. Disc and seat b. Gate c. Diaphragm d. Plate 35. Check valves are used to prevent in piping when the flow stops: a. overflow b.continuous flow c. trickle flow d. backflow 36. Which of the following are types of check valves? (Select all that apply) a. Swing b. Lift c. Butterfly d. Gate 37. (True or False) A ball valve opens completely with a quarter tum of the stem using the valve handle. 38. (True or False) The two types of diaphragm valves are membrane diaphragm valves and straight through diaphragm valves 39. A______ valve would be selected for use with extremely viscous or corrosive materials. a. globe b. plug c. diaphragm d. ball 40. (True or False) Safety valves operate quickly to prevent over-pressurization by gases, which can cause equipment damage or injury. 41. A can be used to address pluggage in small valves. a. valve wrench b. rod-out tool C. chain operator d. welding rod PreviousNext