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Colleagues, I have a situation in which I am pumping slurry material with a positive displacement pump (progressive cavity type) into an existing header in which a centrifugal pump is already pumping water. So the combined stream will be a water/slurry mixture. I am concerned the PD pump...

Colleagues, I have a situation in which I am pumping slurry material with a positive displacement pump (progressive cavity type) into an existing header in which a centrifugal pump is already pumping water. So the combined stream will be a water/slurry mixture. I am concerned the PD pump...

Colleagues, What is the proper way to calculate Pressure Drop across a rotameter?

Colleagues, I have a question regarding minimum flow required to lift a check valve in nitrogen gas service. I am using a rotameter with a needle valve to set a low flowrate (1 SCFH) to sweep a seal chamber at a pump seal. Due to the risk of backflow into the nitrogen header, we have to...

I have the following situation: We are trying to use an existing pump to transfer liquid to a tank 4 miles away from the pump. At times, the pumping rate is going to be less than the minimum flow required by the pump (a spill back line with a restriction orifice will protect the pump for this...

I have the following scenario: A 6" line in which different pumps can discharge into. The minimum flow that can flow through the line is 25 gpm. Is there a way of calculating/verifying whether the line is going to be full of liquid at this minimum flowrate? The reason why I am asking is...