How to make a refillable co2 pressure regulated tank?

Question

Arduino

foreword

spoiler

Suggest a tag for this question

The question is rather open than specific and will have to be described in the abstract.
I have a liquid, I want to push it out with CO2 gas, but at the same time under different pressure, that is
I want to control under what pressure this liquid will be pushed out and be able to adjust this parameter, I plan to use an electromechanical valve, but I don’t know if there are such valves that allow them to be opened to a certain value, I imagine this as a diaphragm on a camera lens or something like that. I also want this cylinder to be multi-charged and I did not find it on the market, among the ads, but I imagine it as a tire nipple + cylinder and for the love of God I would not do it all myself if there was a ready solution. I want to control the valve using arduino. The essence of the question is that tell me either an existing ready-made solution that I can buy / or in which direction I need to explore Youtube,

Answer 1

The extent of the installation is unclear. You can use a carbon dioxide fire extinguisher or a CO2 cylinder from a welding machine (they come in different sizes), if necessary, you can use a gas reducer. Why exactly CO2? You can use air - then any compressor is applicable, from a refrigerator, a car, an industrial one, etc., some even have a pressure adjustment, though the maximum one.

Answer 2

CO2 implies hellish pressure and therefore there is a high probability of getting injuries of varying severity if something bursts or vomits, do you really need it?

Answer 3

Again, what is the pressure range? if not high, then a cylinder with a gearbox + a heater and then a regulator like this: content.smcetech.com/pdf/itv_4017.pdf. and you can manage anything.

Answer 4

How about the 4th generation automotive injector/injector for gas equipment? As I understand it, it can produce a different amount of gas by controlling it with PWM pulses.

Answer 5

Good day.
How accurately and smoothly/quickly do you need to adjust?
Adjustable valves exist in industrial design, but their price is quite substantial.
I had several projects, only instead of air there was air.
In one case, a water ball valve with an electric motor (from a leakage protection system) + a pressure sensor was sufficient.
Of the minuses - slow, designed for liquids and not designed for frequent changes in position. It is also impossible to relieve pressure in case there is no flow.
In the second, I had to screw the stepper motor to the pressure regulator from the compressor, because. it can dump excess even in the absence of a flow, and high speed was needed and accurately, but because he is also not very designed for frequent changes, he died after a couple of months, besides, he had to buy a gearbox for the stepper.
Well, the best option was 10 solenoid valves, after each a needle valve was placed to fine-tune the discreteness of each step, and accordingly, by supplying power to 5 valves, we get half, 10 full, +1 still needs to be used if you need to relieve pressure when there is no flow.