Building my first CO2 setup.. I initially was going to use my old keg regulator.. so I bought the entire post body kit from DIYCO2PARTS. Then I changed my mind and decided to restart my kegging system(its a low end regulator anyways). So now I'm searching ebay for a good deal on a body to go with my kit.

I see a Harris 25-15 and a Harris 92-100 both very cheap, used from a lab. They both look like the would be appropriate(up to 200 psi scales).. CGA 320 fittings.. but I can't find any info really on them. Hoping one of the regulator gurus here might be able to fill me in. Is either one acceptable for what I want.. is one better than the other?

Thanks,

Chris

Harris 25-10 is single stage, Harris 92-100 is the double stage, good regulators but I think you better stay away from these models, because most have been serving for a long time, fail rate is high.

put the number into evil bay search.

concoa 412, need CGA 320 nipple and nut
293171794186

Rare Victor miniature HPT100 double stage regulator, need CGA 320 nipple and nut.
143400464254

Thanks bettatail. Exactly he info I was looking for.

That Victor is super cool. One follow up question. It says on it line pressure factory set to 55psi. Does this mean it is not adjustable? There is no obvious pressure control knob either(unless it’s the top above the gauges). Any thoughts on this?

Thanks!

Follow in question as I have now:completely rabbit holed on regulators.

Are the Airgas E12 models just the predecessors to the Y12 modlels?

The airgas catalog makes no mention of E12.

My personal fav. style..
264447087591
This one is limited to 50psi max though.

Pretty sure the SS means stainless steel diaphragm.
I do prefer visual confirmation of the max pressure listed on the reg itself though.

I think so, but not really sure.

It is anti tempering design(without the front handle), but you can take out the front nut and adjust the output pressure with an Allen key.

This is a good one, I have to resist clicking the buy button every time I see it.
the harris 9296 is rock solid heavy duty, I had several that all worked well, the SS diaphragm model is virtually indestructible, but is rare now.

I assume I don't want to large of a pressure range either? There are a bunch of Airgas Y12 F models in eBay right now in good shape. But they have a listed pressure range of 0-250 PSI. I assume I will have a hard time fine tuning at the low end of the range with this?

Not really though depends on the gauge markings more than anything.
W/ higher range regulators I've bought more err "accurate" output gauges though.


Really 5 psi increments are only thing really needed..

as long as you have a industrial grade metering valve that can handle 250+ psi pressure, the high pressure output regulator is fine.
The reason we don't use a high output pressure regulator is because the solenoid, there are not many solenoid models that can handle high pressure but with low flow rate and low power consumption.

To avoid "accidents" w/ such.. adding a downstream pressure relief valve (actually I personally consider this a necessity)
will avoid damaging any equipment.


Unfortunately, as you can see, this one is in the wrong place for a hp regulator..but good enough for reg/solenoid combos that can take max output..
sooo, just an example.

Meant to protect bubble counter/hose/diffuser from too much pressure.

I'm not sure if it applies the older Harris regulators (I know the older Mathesons had this), but the CGA320 inlet side might take a 1/2-27 thread, which is also a pain.

Yep older Harris stem:
https://regulatortorchrepair.com/pro...ut-and-nipple/
Rebranded Harris using the above stem: