Originally Posted by GeorgeTheGuppy
Thanks. Any suggestions for which used regs to look for or avoid, or how to tell the good ones vs the bad ones?
says, you spend a lot of time with spec sheets and learning to spot telltale signs on the regulators you want if you want to go this route. Also, look for return ability for ones you're unsure of. Or decide to pay more for that ability if you want that peace of mind.
I just did a search and the item numbers of the ones that *I* considered if I was forced to get one today (along with my thought process). I like the silver ones too.
Here's my search string if it helps anyone.
(concoa, victor, matheson, harris, smith, parker, aga, linde, airproduct, osc, alltech, airgas, vwr, praxair, hpt, high purity) regulator -window
edit as you see fit. make sure to show ALL items and not just relevant ones. Sort by lowest price if you really want to spend some time punishing yourself
233232241638 if I didn't care about the looks too much
the 3104 is supposed to deliver up to 100psi, stuck buying an in nipple, which might have to be the case anyway with most of these. not feeling it too much but with the absence of more economical units, I'll think about this a bit depending on my budget.
401702696627 can't find reliable outlet pressure on any stickers on it but not a bad price. I think the C in HPT270C meant something but I forgot now.
as I was browsing, I came across this:
Sometimes it pays to follow 'seller's other items' . Looks like a great unit but as @PlantedRich
said, the 60psi gauge gives it away as a low delivery pressure unit. so I'll consider it since I run a reactor, but it's not my best choice. Have to balance the idea a bit since the price is sort of tempting for such a unit. Having problems finding more specs on the model number in the pics so.. -1 point
also saw this by chance..
153486464905 do NOT fall for this. listed as two stage but does not have the telltale back piece.
this matheson is a beaut. too bad it's only single stage.
this praxair might be a winner
couldn't find much on the model number itself so I started searching for something wider.. "PRS2012 praxair", then dropped to "praxair 2000 series" based on something I saw in the previous search. netted me this:
shows the model number PRS20124301 breaking down as 2012 series, 4: 0-250 outlet pressure, 3: 0-4000 inlet gauge, 0: 1/4" FNPT Port, 1: Standard Assembly
yea, searching is an art sometimes
no returns makes me a little wary, but the price is good for a nice, clean unit. and the seller has good rating so maybe he/she will work with you if it's obviously bad? The chance you take sometimes for economy.
this airgas mayyybe, but the price is a little hard to choke on. I thought it was a rebranded matheson (out of practice), but it's really a rebranded victor gpt270 I think.
331404479637 It's new.. so it's got that going for it. But from the plantedtank link, you can see it sold for less than 50 only 2 years ago!
poking around, I couldn't find a spec sheet for 2122301, but I did see a link on barrreport identifying it as a 212 series so I googled for concoa 212 series instead.
spec sheet revealed this to be a unit with 40psi output pressure only. enough to push past a diffuser? maaaybe, but I've heard of people needing 50 to crack them, so it's new... but, not strong enough? and now we're talking at 150+ already.
so yea, a little bit of gut, some persistence, some luck.
if I had to buy today? maybe the praxair. but if I'm not in a rush, I'd keep looking.
could always post back here or revive that regulator thread where you found your original information if you have questions on a particular item. I'm sure someone would be happy to provide some input.