I calculated the line resistance and matched the system curve with the pump curve, but I found a mysterious 20 psig drop in the system that cannot locate.

I have a water tower,and i need to install a valved pipe as shown in the sketch to allow me to take samples of the water.

I am recient college graduate (University of North Dakota 2009). I am working in the nitrogen fertilizer business and one of the tasks given to me is to perform a 120 # steam balance over our major u

I am not familiar with ESD valves and new to its design. What are the factors that determine the torque requirements of ESD valve actuator? In case of emergency how the torque is taken care of?

I am pulling facuum on a vessle using a jet, and I know the pressure at the jet and the pressure at the vessle. I have a valve mid-way and I need to know the pressure going into this valve and the pr