Jenkins Butterfly Valves

butterfly valves
A valve consisting of a disk rotating on an axis across the diameter of a pipe to regulate the flow, as in the throttles of many engines
A valve consisting of a pair of semicircular plates that are attached to a spindle across a pipe and hinged to allow flow only one way
A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off.
(butterfly valve) a valve in a carburetor that consists of a disc that turns and acts as a throttle
(BUTTERFLY VALVE) A valve with a circular body and a rotary motion disk closure member which is pivotally supported by its stem. Butterfly valves come in various styles including eccentric and high-performance valves.

jenkins
Up Jenkins, also know by the shortened name Jenkins, is a party game in which players conceal a small coin (or in some variations a ring) in their palm as they slap it on a table with their bare hands.
"Jenkins" is the thirteenth episode of the fifth season of the CBS situation comedy How I Met Your Mother and 101st episode overall. It originally aired on January 18, 2010. The episode hit a season high with 10.52 million viewers and high overall ratings.
Roy (Harris), Baron Jenkins of Hillhead (1920–2003), English politician and scholar. He was a member of Parliament 1948–76 and 1982–87 and then served as chancellor of Oxford University. Notable works: Mr. Attlee (1948), Truman (1986), and Gladstone (1995)
Jenkins is a lunar crater that lies along the equator of the Moon, near the eastern limb. It is attached to the eastern rim of the slightly larger crater Schubert X, intruding somewhat into the interior.