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A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [1]
A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [ 1 ] Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave.
BTO/C – break to open/close (valve torque) BTU – British thermal units; BTU – Board of Trade Unit (1 kWh) (historical) BU – bottom up; BUL – bottom-up lag; BUR – build-up rate; BVO – ball valve operator; bwd – barrels of water per day (often used in reference to oil production) bwipd – barrels of water injected per day
The Chevrolet Inline-4 engine was one of Chevrolet's first automobile engines, designed by Arthur Mason and introduced in 1913. Chevrolet founder Billy Durant, who previously had owned Buick which had pioneered the overhead valve engine, used the same basic engine design for Chevrolet: exposed pushrods and rocker arms which actuated valves in the detachable crossflow cylinder head.
Working with his son George Schrader, in 1891 they produced the Schrader valve, which was patented in the U.S. in 1893. [2] [4] Two years later George patented the valve cap for protecting the valve from the elements, and in 1898 the design was improved with the introduction of a replaceable valve core. The valve became popular in the early ...
1. input airflow; 2. output airflow; 3. valve tubing; 4. valve casing; 5. internal rotor; 6. valve ports, or "knuckles"; 7. rotor spindle. A rotary valve (also called rotary-motion valve) is a type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes. [1]