Gate Valve Pictures

gate valve
A valve with a sliding part that controls the extent of the aperture
A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid.
(GATE VALVES) have a wheel type handle. Several turns of the handle are required to turn off a gate valve. Gate valves are most commonly used on main line pipes with high water pressure or high water flow.
A valve that lets you completely stop, but not modulate, the flow within a pipe.

pictures
Describe (someone or something) in a certain way
(picture) visualize: imagine; conceive of; see in one's mind; "I can't see him on horseback!"; "I can see what will happen"; "I can see a risk in this strategy"
Represent (someone or something) in a photograph or picture
Form a mental image of
(pictural) pictorial: pertaining to or consisting of pictures; "pictorial perspective"; "pictorial records"
(picture) a visual representation (of an object or scene or person or abstraction) produced on a surface; "they showed us the pictures of their wedding"; "a movie is a series of images projected so rapidly that the eye integrates them"