![]() The plan view is represented by a blue rectangle and red blocks indicate each square inch of the blue rectangle. Calculate the total force acting on that gate valve.įigure 8.1: Showing the plan view of an object. The piping is all going to be 4 inch and there is a gate valve at the end of the system preventing water from getting into an unfinished part of the system. In this case the maximum pressure is 120 psi. The sprinkler system has to be tested to 50 psi above the maximum pressure for about 2 hours. They will hopefully have the capability to make 50 million compostable coffee pods by the middle of next year. ![]() Rolf is a Swiss born sprinkler fitter installing a new sprinkler system in an old run down warehouse now being used as a compostable coffee pod manufacturer. Make sure to check out the video answer which goes along with the question once you have completed the question. Give the following practice questions a try. The total force acting upon the gate valve is 1,413 pounds given that it’s a six inch gate valve and has 50 psi acting upon it. ![]() Step 1: Write down the formula you are going to work with. What is the total force acting on the gate valve? Figure 8.2: A 6 inch gate valve with 50 pounds per square inch acting on it. What we have is 50 psi acting on a 6 inch gate valve. For our example we’ll say that we have a six inch gate valve. Now as before we would use the same formula which requires psi and area. What we are required to find out is how much force is acting upon the gate valve. We don’t have to calculate psi as it is given to us. Note in this example the height of the system does not matter like it did in the previous example. ![]() ![]() The system has been pressurized to 50 psi. This valve is closed and holding water back from one side of the system. Say we have a piping system filled with water which is pressurised by a pump. Here’s another scenario but this time we’ll switch things up a little. ![]()
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