DIY regulator
Heres what i’ve been working on lately;
Very simple, moving piston, spring washers DIN2093 12.5×6.2×0.5mm.
Probably messed up my calculations.. i had planned for stacking the washers 2 and 2, but ended up 4 and 4.. If you build one i suggest you make the piston 13mm diam, or use 0.7mm thick spring washers. Other than that i think the pics says it all. the whole regulator can be made a bit smaller… this is my first one, you can easily shave off a few mm here and there if you decide to build one.
Thanks
/supermono
…sorry for flipping it upside down..
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hi,i like to build one,if you don’t mind telling me how big is the id on the piston to let the air in ?thanks
I love how simple that is, what a great idea. Definitley going to have to try this out 🙂
Dave
@Dave: yes that’s the check valve.. pretty simple..
/supermono
That o-ring at the top of the regulator chamber, is that the check valve?
Dave
Hi,
Harry; i’ll shoot a string an post the figures! Output pressure is adjustable by means of differnt stacking of the washers and/or altering the distance between piston and seat. I’m now running something like 90Bar.
Nutshot; this design is not vented to outside air, that is a weakness… but i don’t really see it as a big problem; in case the spring chamber in the reg gets pressurized the reg simply stays wide open at all times, so there is no such thing as a lock up that leaves you with a pressure vessel that can’t be depressurized. A gauge on the low pressure side would keep you updated on the reg status. Since this design incorporates o-rings and moving parts it will fail, sooner or later… I still haven’t had any problems with pressure build up in the spring chamber, built them a few weeks ago.. I will however keep you noted on the long term reliability. Fixing a leeking reg is a very simple operation; empty pressure vessel, unscrew bottleneck valve assembly, pull the reg apart, swap one or possibly two o-rings, re-assembly and fill back up. takes less than five minutes (unless you use a hand pump.. like i do..). My design features a check valve so that incoming high pressure air dosen’t have to pass the actual reg on its way into the bottle..
thanks
/supermono
oh, nutshot…
i missed tgat avatar… 😯 😛
Couple of Questions 🙂
How are you filling the bottle with the inbuilt reg ?
Ive seen a similar reg design to what your using and it needed a vent to atmosphere hole to function . does your reg not need this . We tried a theoben style reg in a tube and without the vent to atmosphere breather hole it just locked up .
what is the output pressure of your regulator? I would love to see some chrono numbers
Thanks for the input! Building regulators is fun.. heres the third one i built, forgot to take pics of the second one.. Anyway, no 2 and 3 are “in botttle regulators”. The first inbottle reg was easy; the bottle had a M18x1.5 thread in the neck = lots of room for the reg… the second bottle i have is threaded M14x1.5… that means the reg must be under 12.2mm in diam in order to fit in. took some messing around with the spring stacking to get it right, but now it works like a charm.
Cheers
/supermono
42/37 actually equals 1.13513514″
we normally round those numbers like so: 1.14″ 😛
lol
Very nice Supermono.
Its nice to see some 1 using proper numbers to measure with instead of all that 42/37ths and such.
Right. Of the the garage to try that for me self.
Later dude.
Sean.
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hey all im new to the forum
Im working on a project and would like to build a regulator for co2 (around 60 bar) to output pressure of 10 -15 bar. Can anyone point me in a general direction how to calculate the forces in a regulator and what kind of a spring do i need? Also is there any way how to force all the liquid co2 to expand ? maybe some kind of a expansion chamber infront of the regulator ? Thank you 😀