Is secondary pressure control important?

[ingg]

Reading through notes - insomnia is so much fun - and re-reading that JBJ regulators don't allow for secondary pressure to be anything other than 15 PSI. Same with Azoo, right?

Is this an important function in any way? This would push me to buying Milwaukee instead of the JBJ I was leaning towards if it has any advantages to being able to adjust it.


Another set of questions - low pressure regulators. Those add ons that are supposed to prevent end of tank dumps.

These can be bought from clippard I am assuming?

Anyone know of a local supply?

Are they able to be fit into any regulator? Hopefully that is a stupid question to which the answer is yes.

And if they can be run inline... umm... can it be run inline before a manifold running multiple supply lines to multiple tanks?

[jcali10]

I just bought a JBJ from an Ebay retailer for $85 delivered, and I am waiting for delivery of my cylinder and other assorted goodies.

No output pressure adjustment just simplifies things. But there may be a way to circumvent that, like popping off the cap on the face of the regulator. There should still be an adjustment knob or nut, they just make it inaccessable.

Clippard has check valves, needle valves, solenoids, manifolds, and tubing at very reasonable prices. But for a small order the $15 shipping and handling stings a bit. It would be better to do a Clippard group order.

Local suppliers? I tried to buy a regulator from Harbor Freight in Glen Burnie. They advertised one on their website for $34.99, a single stage, dual gauge unit, that looked very nice, but they didn't have it in stock. I still have the rain check from 11-21-07.

[krisw]

Dave, I'm no expert on this stuff, but I would think that if you're running CO2 over longer distances to multiple tanks that you may need the secondary pressure just to keep enough pressure flow on all the lines. Does anyone know if this is the case?

[ingg]

That is exactly my concern, Kris - even on the 180g, I'm led to believe I'll be doing a good bit more than a couple bubbles per second, and it will have to push into a reactor tied to a 950gph pump .

[krisw]

Just go for the Milwaukee. That's what I use, and IIRC, the price was the same for the Milwaukee and JBJ when I bought ~ $85, right?

[jcali10]

Yes, if I had any concern about the output pressure, I would definitely opt for a unit with an adjustable one.

[Jeff120]

I dont think it will matter, lower pressure=longer to build the pressure, but once its built up I dont think you will be discharging it so fast that it wont be able to replace it. I really dont think it will matter. If you have something that is adjustable it just one more thing to mess up or not work right. Im happy with my JBJ and Azoo that arent adjustable

[Aaron]

Dave,

You can get Clippard parts from a company called Cochrane Co. Kevin knows the specifics as he's gotten lots of parts from them in the past. The prices are the same and sometimes a little cheaper than the net. They'll probably have to special order the LPR for you.

[Spine]

Dave,
I have what you need for the Clippard stuff (Yawn). There is a Harbor Freight in Gaithersburg and one in Laurel if you need a adjustable gauge.

[neilanh]

Why not just get the milwaukee? same price, and it's controllable. Yes, it's more "complicated"... one more thing to adjust and monitor, but gives you the control you need. I run a 3 way splitter on mine and have to keep it up around 30psi to get the performance I want. I tried running it at 20 and it just wouldn't stay stable. one of the lines off my 3-way was 25' long too.