- #1
ice109
- 1,714
- 6
if i wanted to figure out how much net force/torque is applied to a regular disk type valve in a pipe as a function of the pressure difference on both sides of the valve what would i have to do/where would i have to look?
FredGarvin said:When you say "disc type valve" do you mean a butterfly or a gate valve?
You can sometimes calculate that but to get a good number you can contact the manufacturer with the operating conditions. They can give you very good numbers usually versus percent open.
That's what I was thinking you were pushing towards. Honestly, if you are interested in saving time, you can talk to either the valve or the proposed actuator manufacturer. They will be able to size a valve actuator to suit your situation. Letting them do that gives you more time to do the important things.ice109 said:i mean butterfly type valve. the situation is that i have a valve with unequal pressures on each side and i want to know how much needs to be applied to turn it all the way through the turn i.e. as the pressures come to equilibrium.
Q_Goest said:See if the attached helps. This was taken from "Aerospace Fluid Component Designers' Handbook", Feb. 1970.
The equation for calculating net force on a valve in a pipe is Fnet = P1A - P2A, where Fnet is the net force, P1 and P2 are the pressures on either side of the valve, and A is the cross-sectional area of the valve.
The pressure difference for a valve in a pipe can be determined by subtracting the pressure on the outlet side of the valve from the pressure on the inlet side. This can be measured using a pressure gauge or calculated using fluid mechanics principles.
The net force on a valve in a pipe can be affected by several factors, including the pressure difference, the cross-sectional area of the valve, the type of fluid flowing through the pipe, the velocity of the fluid, and the angle of the valve in relation to the flow of the fluid.
The net force on a valve in a pipe can impact its performance by affecting the opening and closing of the valve. If the net force is too great, it can make it difficult for the valve to open or close properly. This can also lead to increased wear and tear on the valve, potentially causing it to malfunction over time.
Yes, there are several safety considerations when calculating net force on a valve in a pipe. It is important to ensure that the valve is designed to withstand the net force that will be exerted on it. It is also important to follow proper safety protocols when working with pressurized systems and to regularly inspect and maintain valves to prevent any potential hazards.