Catalytic Coking Reformate Blending Version 20191120
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Participation: Prize 1 Wealth； Correct answer: 3 Wealth as a reward. https://bbs.hcbbs.com/static/image/hrline/2.gif https://bbs.hcbbs.com/static/image/hrline/3.gif True or False: Butterfly valves are also known as flap valves; they regulate the flow rate by allowing the valve disc to rotate within the valve body, thereby changing the flow area of the valve. Answer: Correct https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answer will be announced automatically after two days.
A butterfly valve is a type of valve that operates by rotating a disc through the rotation of its valve stem. Within the cylindrical passage of the butterfly valve’s body, the disc-shaped element rotates around an axis; it is this rotation of the disc that is used for flow control. When the disc reaches 90 degrees, the valve is in its fully open position. The flow rate of the medium can be adjusted by changing the angle of the disc. Butterfly valves are generally installed along the diameter direction of pipelines