Author Topic: Miniature pressure regulator  (Read 1936 times)

Offline BillTodd

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Miniature pressure regulator
« on: June 17, 2015, 07:07:25 PM »
This is work in progress but , is there any interest here?

Regulator's body here is 15 x 15 x 45mm
Bill
wy omnibus Latinis taurus stercore?

Offline b.lindsey

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Re: Miniature pressure regulator
« Reply #1 on: June 17, 2015, 07:38:41 PM »
That could be useful Bill. What kind of inlet pressure are you designing for? I have moved the topic to engine ancillaries BTW.

Bill

Offline BillTodd

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Re: Miniature pressure regulator
« Reply #2 on: June 17, 2015, 07:49:44 PM »
I'm keeping it a modest couple of bar ATM [edit sorry, I read outlet pressure, Inlet is limited by the glued fixing of the valve seat] . If it works it should be easy to stack a number of them into one body so making a regulated manifold.

This is how it is supposed to work

<a href="http://www.youtube.com/watch?v=cE80f43T8Rs" target="_blank">http://www.youtube.com/watch?v=cE80f43T8Rs</a>
« Last Edit: June 17, 2015, 08:02:36 PM by BillTodd »
Bill
wy omnibus Latinis taurus stercore?

Offline BillTodd

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Re: Miniature pressure regulator
« Reply #3 on: June 18, 2015, 09:04:15 PM »
Well, it works... Sort of...

I had a couple of problems:
no 4mm balls ,plenty of 3,5,6,8,16 but not a 4 anywhere in the shed!
The 5mm in a 5.5mm bore restricts the gas flow considerably.

And, the carefully measured and calculated O ring is the wrong size for my 12.7 mm piston. The result is too much friction, and excessive hysteresis. I stretched a small one over the piston to try it but although it worked better, it leaked .

All in all though a promising start.

Sorry about the poor pics, camera has gone walk-about again.
« Last Edit: June 18, 2015, 09:16:08 PM by BillTodd »
Bill
wy omnibus Latinis taurus stercore?