Needle valve alternative?

A

Allen

New Member
I was looking for a selectable multi outlet valve (think this with 4 outlets: http://www.golemgear.com/p-250-gas-switch-block-left-or-right.aspx PS- I'm still looking if you have a suggestion!!) and came across this:
http://www.beswick.com/article/beswicks-pcfcd-wins-2008-golden-mousetrap-award

0-20 CF/Hour Air, 500 PSI input, 10-32 tapped ports...

The PCFCD-1N1 is designed to maintain a constant flow rate, which the customer can adjust, regardless of upstream or downstream pressure variations. It works with both liquids (incompressible fluids) and gasses (compressible fluids) but is primarily intended for the control of liquids. The pressure regulation is accomplished with a low friction diaphragm mechanism. Beswick has applied for patent protection on this unique valve.
Click to expand...

Thoughts on using this in place of a needle valve?

Allen
 
Look up the Parker Porter VCD1000 valve, seems far more suitable in terms of size, flow rate, intended for gasses etc.
 
I and my colleag use on Meg and JJ this type Viking oxygen needle valv , I recommend .IMG_0919.jpg
works perfectly and easy to operate .Good feeling when using dry gloves .Save battery power for selonoid .
 
Anyone makes needle valves with "clicks" ?
For instance, with flow measured at the surface:
1 click = 0.2 LPM
2 clicks = 0.5 LPM
3 clicks = 0.8 LPM
4 clicks = 1.1 LPM
 
Last edited:
Which kind does he have? Needle ? Or clicking different flous?

Poslano z mojega SM-J500FN z uporabo Tapatalk
 
Philippe GERIN said:
Anyone makes needle valves with "clicks" ?
For instance, with flow measured at the surface:
1 click = 0.2 LPM
2 clicks = 0.5 LPM
3 clicks = 0.8 LPM
4 clicks = 1.1 LPM
Click to expand...

You realise that this would be useless on a compensated reg (which was kinda the point of the needle valves), right? Fixing the flow at the surface to sensible rates makes zero sense once you get under the water because they'll all change anyway.
 
Right, you got the idea. Pick any numbers you want. My point is that it is easier to feel/hear a click (and trust it) than 1 or 2 turns-ish of a needle valve at depth with dry gloves and keep looking at the PO2 displays to check you got it right.
 
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