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That makes sense to me as well. I did not consider the vapor trapped added more head to overcome and this could affect the process. Our current system does not have any way around this and it is a batch process. The dip is for access for operations/maintenance to flow meters and a valve for...

https://res.cloudinary.com/engineering-com/image/upload/v1593102457/tips/20200625113428002_rck46c.pdf Above I have a photo of a system. Nitrogen header pressure is used to transfer liquid from storage vessel to reactor vessel. The piping system is set up where the header is ran above walkways...

That is what I feared as well. Thank you for the expertise.

Recently a new engineer oversized a control valve for a water inlet to a funnel pot where no tuning allows for effective control of flow. Usual operating flows would like to be from 15 gpm to 50 gpm, but the valve simply cannot control anywhere near the lower end of the flow requirements...

Looks like ideal gas law. This does not take into account the 40 psig coming from the water due to being pumped in. Not sure if that contributes to pressure increase in closed system.

Well my question was is there a way of quantifying implying that I am not sure of how to quantify ending pressure

Just air and I would assume an initial temp of around 20 C (68 F).

Nope. Water properties are constant at 180 F and 40 psig. Flow comes in at 35 gpm once block valve opens. Initial pressure of vessel is 0 psig.

For the sake of simplifying as much as possible, assume there is a closed pressure vessel (650 gals) that takes water from a water distribution header. This header is at 100 psig and regulated down to 40 psig and blocked off by a block valve right before the pressure vessel. If we assume the...