Check Valve Position

less than a mile

You can place the check valve almost anywhere in the circuit.

You just need to know where it will be most effective and operate properly.

• Do you know where?
• Can you place it next to your pump?

That's 4 of the soon to be asked 20 questions!

Only 16 more to go and we might figure this thing out!

"Check Valves should never be placed in a vertical line where the flow is down."

That's not necessarily so. Below are a couple of examples of vertical flow down check valves. The lower one is a lockable check valve that can only be used in the vertical flow down condition

Crown Wafer Nozzle Check Valves

• Available for vertical flow-up or down service

I am curious as to how well these valves work. Wafer check valves in vertical downward flow are notorious for leaking.

We used wafer checks in vertical down mode for both liquid and gas applications with no evidence of leakage.

Provided the valve is designed with the correct spring rate for the application they work extremely well in that position.

Valves intended for positions other than vertical down generally have a softer spring capacity and may well leak if used that way.

Good to know. What materials are available? I designed a system used in a pharmaceutical facility that was specified to be of Halar and had difficulty in finding come components.

Anywhere it's designed to be at. Simple as that

I can't agree with the "simple" answer of "anywhere it's designed to be at". There is good design and poor design, but without knowing much more about the system we don't have any basis for deciding which is which.

We need more data about the system: pressure, working fluid, nearby instrumentation, the basis of design for the system. Without these details the best we can do is make a (hopefully) educated guess....and we've all made mistakes when we do that.

Engineering is about gathering as much information as possible, applying known principles to make the best estimate of what will work and satisfy what is asked for, and successively refining the work as more data becomes available. Shooting in the dark carries with the risk that the foot we shoot might be our own.

"We need more data about the system: pressure, working fluid, nearby instrumentation, the basis of design for the system. Without these details the best we can do is make a (hopefully) educated guess...." Welcome to CR4® The place where Engineers are expected to answer questions with little or no information provided by the OP. Your right, we have absolutely no information about this. If the OP is trying to design a system, he/she is over their head and need more schooling. If their troubleshooting a system, then they need to follow the designed schematics and place the check valve where it's depicted in the print. If they're just curious, there's IoT and numerous search engines. So, yes we need more info. and until we know more about this system and what type of check valve they're using, the the valve needs to be placed where it's designed to be at, simple as that