Consultant Engineer

A "consultant engineer" would express this with better grammar, accuracy, and information. Please hire one.

as well as including temperature parameters

Did you mean you would like to have a Consultant to help you with this then certainly you should post with your name so we can contact you and propose our rates.

Just on the side if there is a pump it would be different than with just a bottom valve.

Stop being anonym and you will receive all the help you need.

Prepare to pay for the services and also prepare to have more information avaialble.

PM me as I have the feeling I am the right guy to ask!

So off topic! Aha!

Clear as Gasoline!

The rampant misspellings affected my vote.

--Editor Crankshaft

Point taken! For some reasons I write the way I talk!

You get a helluva lot of gasoline down a 4" pipe, pumped or not

Is that OD or ID?

If for some reasons there is 75000 psi behind the pipe it might be wise to specify what is meant here!

Just saying!

• The economic maximum velocity in a pipe is around 3m/s for a liquid. If the flow results in a higher velocity, the pipe is undersized.
• The economic minimum velocity in a pipe is around 1m/s for a liquid. If the flow results in a lower velocity, the pipe is oversized.

The best answer is to look at the Process Description and the Process Flow Diagram for the installation. The first stab at line sizing will spring from them, and may well be in supporting Process Calculation documents.

A Consultant Engineer would know these things already.

...however, the desirable flowrate in a non-conducting flammable fluid needs to be kept down so that the fluid does not contribute to the generation of static electricity within the fluid, which may cause an incendive spark. So for something like gasoline in a 4in pipe, limiting the maximum flowrate by appropriate process design to something under 8 litres per second would be a desirable thing.

A Consultant Engineer would already know that too.