R134a Can Tap

[XC] gomeler · 05-18-2007, 03:02 PM

I never thought I'd need r134a but now I need a few ounces for a chiller I'm building. I biked to all the stores in a 2 mile radius of my house and I can't find a r134a can-tap with a shraeder fitting, they all feature the automotive fittings. The one shraeder equipped tap on ebay pierces the sidewall, I'd rather have a tap that pierces the seal on the top with the threads, anyone know of a source for these taps? Purchasing a 30lb cylinder of r134a is out, I wouldn't use 30 pounds of the stuff in my lifetime.

Exahertz · 05-18-2007, 03:27 PM

so you need a can of r-142a to connect to a shraeder valve? you could cut the hose from the can, and then cut a hose with the shraeder fitting on it. then join the two by using a doubble hose barb.

[XC] gomeler · 05-18-2007, 03:30 PM

Suppose I could do that but I was hoping for a complete system, not something ghetto-fabbed up. If nobody gets back to me soon then I suppose I can use something like that to transfer the contents from the r134a cans into another proper cylinder.

Exahertz · 05-18-2007, 03:53 PM

yea it is ghetto, but if you cant find anything, it may work.

wdrzal · 05-18-2007, 04:13 PM

they all had a brass vavles with 1/2 acme threads that screws right on. and have a piercing valve,use what you need and shut off

I keep a can ,tap and 8" hose in every vechicle, if you develope a leak and its slow you can add enoughn gas so the low pressure limit does not keep clutch from engaging. bike ridiing is good exercise, towworow ,but put a gp transmitter on bike so we can track you.

[XC] 2long4u · 05-18-2007, 05:27 PM

Whats wrong with puncturing the side?

[XC] gomeler · 05-18-2007, 06:11 PM

Bike riding indeed is good excercise but I prefer running, ran 6.5 miles on wednesday though so I thought I'd give my legs a break from the shock of running in the city. Would be funny to put a GPS transmitter on the bike, was all over the place today. I mainly don't want the side-wall puncturing taps as I have all of my gases stored in a large wooden chest and I wouldn't want the side-wall tap from getting jostled and then leaking the remaining ~8 ounces of R134a, with something that threads onto the can then a leak is less likely. Silly but I try very hard to not vent any non-HC refrigerants. Picked up a threaded can-tap that'll tap into the top seal on the can and it has a valve so I can shut it off and store it, hopefully the thing forms a good seal. Thanks for the help guys, time to go watch Shrek 3

ak_47_boy · 05-20-2007, 10:42 PM

One for these ^

$7 @ Hardware store.
I bent mine so it fits the arc of the can better. You have to make a strap out of sheet metal etc.. Like a giant vamp clamp

It even shuts off.

[XC] gomeler · 05-21-2007, 10:35 AM

Thanks but I didn't want to pierce the sidewall, I wanted everything to be done via the top. Found a solution though, thanks

wdrzal · 05-21-2007, 12:44 PM

Quote:

Originally Posted by ak_47_boy

One for these ^

$7 @ Hardware store.
I bent mine so it fits the arc of the can better. You have to make a strap out of sheet metal etc.. Like a giant vamp clamp

It even shuts off.

thats to tap a copper line to feed water to fridges cold water & ice maker,plus other item like humidifiers and the like

Xeon th MG Pony · 05-21-2007, 01:49 PM

As such refrigerant will go through the rubber seals of that clamp, it is useless for refrigerants. For water it is perfect, for refrigerant no.

gkiing · 05-23-2007, 11:52 PM

Huh? Refrigerant doesn't go through the rubber seals on my gauges :p

Xeon th MG Pony · 05-24-2007, 12:45 AM

Thats becuase the rubber on your guages of a perticuler type, just as the rubber for water service is of a perticuler type and so on, not all rubber is simply rubber.