Pressure and area, how to calculate them
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I’ve noticed that things like hydraulic control valves, ball valves, pressure reducers, relief valves, and slow-closing check valves are all assembled using the same valve body; they all consist of a valve stem and a cushion that divide them into two parts. What I want to ask is: does anyone know how to calculate water pressure in relation to area? I heard it has something to do with hydraulic principles, but I don’t understand it. That is, for the same pressure, what is the relationship between different areas? Is there any formula for this? Or could someone explain to me clearly the application and principles of control valves? I’m just looking for practical experience, without delving into any theoretical aspects
What we usually refer to as pressure actually means stress, that is, the pressure per unit area. At the same pressure, the larger the area, the lower the pressure.
Pressure is denoted by F, and area by S. F=PxS
Reply to 3# Little Thumb: What does “P” mean? Haha, I graduated from elementary school yet I still don’t quite understand it!
Reply to 4# Hongsheng Valve Repair: P is the force per unit area, that is, pressure. It can be measured with a pressure gauge; also, knowing the force F applied and the area S allows one to calculate P.
Reply to 1# Hongsheng Valve Repair: The Bernoulli equation can be used as a reference for accurate calculations