Profile of AUTOFROST REFRIGERANTS

Best Freon Chart

On-Line training manual is available http://www.epatest.com/609MAN.pdf	TL: CLIMBING OUT OF THE OZONE HOLE (GP) SO: Greenpeace, Washington ...The "Greenfreeze" energy use is comparable to current CFC-12 (Freon) designs on the German market, and uses only some 44 ounces of propane and butane
greenchill site
freon replacements, 134a conversions and R12 retrofits. no licence needed to buy it--- ???????????? chech on more about it first before using it --- be careful with it till then !	Freon superstitions
Greenfreeze: A Revolution uses a mixture of propane (R290) and isobutane (R60Oa), or isobutane as a pure gas for the refrigerant ... 30s, out of 60 different refrigerator brands, 11 used isobutane as refrigerant,, Some "Greenfreeze" refrigerators with isobutane use up to 38 percent less energy USE than their identical counterparts with HFC-134a. Bosch-Siemens announced a 50% energy savings with Greenfreeze in their 1993 annual report

Profile of AUTO FROST REFRIGERANTS", The authors have encountered numerous R-134a systems, both new and retrofitted that have performed poorly[4]. Others have performed well. Several technicians have "reverse-retrofitted" some of these systems to Autofrost refrigerants with excellent results. The hardest task is to remove ALL of the PAG oil if installed in the system. Autofrost contains HCFCs which destroy most PAG oils. The system must be disassembled and flushed, with the compressor put on the bench and turned over 40 or 50 times while dribbling mineral oil into the intake. Experience has shown that the standard 525 SUS mineral oil used in R-12 systems has sometimes been too thick for the tighter tolerances of new R-134a compressors, causing near immediate failure. However, a thinner mineral oil,such as Ford part #YN9, has been found to work well in all systems. R-134a systems with POE oil, should have some of the oil drained if easily accessible, with the drained oil replaced with mineral oil as above.

Profile of AUTOFROST REFRIGERANTS", Click here to see test results on oil breakdown. good site on R406a

Alternative Refrigerant Options for R-500 freon - OneLook Dictionary Search The New American - Behind the Freon Frenzy

Sun tracking circuit for solar arrays

Compressed and Liquefied Gases

Chemistry CnH2n-2, ethyne (acetylene), propyne, butyne, pentyne, hexyne, heptyne, octyne, nonyne

IMPORT-EXPORT-PAGE for your Offers to SELL

Reporter_21_11_case_study 1,3-Butadiene. 9. Propadiene. 18. Propyne. Figure A1

chemistry of carbon

... An example is propyne, a gas often used by welders ...

Nitro Chicks Molecule Gallerypropane, propene and propyne. chloromethane and carbon tetrachloride ...

Mineral Oil Gases

propane, propene and propyne

check on 413a as being better than straight (134a -15) to (413a -20.7)

Oils used in the Freons

Refron Technical Data

ES-22a: No license needed

Charge the A/C refrigerant yourself Colder than R22 Air conditioning!

The best freon chart

R414A/Chill-it/Autofrost-X4/GHG-X4 = R-406a BP= -29.2

name R12 CFC-12 100% (dichlorodifluoromethane)

R22 HCFC-22 100% (chlorodifluoromethane)

R142b HCFC-142b 100% (chlorodifluoroethane)

R124 HCFC-124 100% (chlorotetrafluoroethane)

R406A/Autofrost-X3 HCFC-22 55% / HCFC-142b 41% / Isobutane 4% BP= -26.9

R414A/Chill-it/Autofrost-X4/GHG-X4 HCFC-22 51% / HCFC-124 28.5% / HCFC-142b 16.5% / Isobutane 4% BP-29.2

FRIGC FR-12 HFC-134a 59% / HCFC-124 39% / Butane 2% BP= -10.1

FREE ZONE RB-276 HFC-134a 79% / HCFC-142b 19% / lubricant 2% BP= -11.6

Freeze 12 HFC-134a 80% / HCFC-142b 20% BP= -11.4

HOTSHOT/R-414B HCFC-22 50% / HCFC-124 39% / HCFC-142b 9.5% / Isobutane 1.5% BP=-29.4

Compositions listed on the US EPA web page http://www.epa.gov/ozone/title6/snap/macssubs.html

Index Home About Typical BBQ grill tanks are rated for 240 PSI..R-22 (same pressure as propane ), and R-502 would be around 10% too high @ 125F (maybe it is 130F?) - With Autofrost/R-406A/CHillit/R-414A---R-414A (Chillit) has no "slight" flammability after worst case leakage. It is classified by UL as "practically nonflammable" (same as R-22) under standard 2182 and is pending as safety classif A1/A1 by ASHRAE committee 34 (non flammable as formulated / non flammable after worst case fractionation).The 4% isobutane (in both refrigerants) does not contribute to any flammability, as it leaves with the R-22, slowly and evenly. we demonstrated that venting R-12 (with 10% 525 mineral oil), at 115F----don't use a tank that had propane in it as the mercaptan will >> put a stink in the freon and this makes the recyclers VERY upset

Propane has too high pressures for R-12/R-134a systems.. You need to use 60/40 (by weight) propane/isobutane to get the correct pressures for an R-12/R-134a system. You can probably get isobutane as camping fuel.. dont use "butane" (n-butane), since it boils at 31F.. way too high.. i-butane boils at around 10F, propane is -44F. Sorry about the non-metric units. Pure propane is a direct match for R-22 though.You can use an R-12 compressor for R-22 (or propane) service if you reduce the operating speed to 3/5 of what the R-12 speed should be. Propane is also known as "R-290" and isobutane is "R-600a"

http://www.yarchive.net/ac/humidity_removal.html There are two kinds of heat load, called "sensible" heat (the temperature), and "latent" heat, which is generated by the removal of humidity. Car A/C's are rated 3 or 4 "Tons" in capacity, 1 ton = 12000 BTU/hr. So you have roughly 50,000 BTUs/hr in a car..Window units use R-22 refrigerant, which does only 1/20 of the ozone damage as R-12 (in cars), and R-12 is on it's way out. Some of the automotive R-134a retrofit kits use POEs.. they should do better than PAGs.

R-12 puts out 56F air. R-406A does 42F air, and "GHG HP" does 28F air

R-134a has a lower "critical" temp than R-12. Critical temp is the temp (and above) at which a gas cannot be liquified or condensed, no matter what the pressure is. Critical temp for R-12 is 234F.. and R-134a is 214F. At critical temp, the corresponding critical pressure (if you have liquid present) will be in the range of 580-600 PSIG for both of them. Car not moving, poor air flow, etc... all kill a R-134a system much more than R-12 (or other refrigerant) system. At 214F, R-134a will not even condense and be at 588 PSIG or such.. so the system will pretty much cease to function, bust hoses, compressor valves, etc. R-134a needs a much bigger condenser, higher air flow rates, and ways of getting cooler air due to the low critical temp.

http://www.yarchive.net/ac/oils.html oil return problems --- R22 has always had more oil miscibility problems and oil return problems than R12.. I have heard early R-22 systems often used R12 line sizes, [which were larger --- Had to wait for a cold day to do the R22, to keep the compression ratio down, still had about 210F discharge temps, ambient in the 40's, head approx 100 PSIG. Evap at 18 in vacuum.

Generally yes but I remember here earlier in the year George Goble > mentioning some peculiarity about R409a with one of the oil types ? FX-56 (R-409A) is composed of R22/R142b/R124 60/15/25 (by weight %) MP-39 (R-401A) is composed of R22/R152a/R124 53/13/34

cleaning a compressor of pag oil----Immerse the compressor in a bucket of isopentane and turn it by hand. - Unknown about how much PAG oil this will get out--- run R-134a compressor "in free air", pouring a small stream of mineral oil into the intake to try to work out the PAG oil. How long? How much mineral oil used? How much PAG still stuck in the compressor? Whatever method (change the drier.. to XH-9 desiccant), there is going to be a small amount of PAG oil left. You can bet when the R-406A or R-12 or whatever hits this, all of the remaining PAG oil will destruct and turn into contaminates, including water I am told. If the water is small enough, one might be able to adsorb it into the drier or neutralize it with something like Cryo-Chem's Dry-Pak??

We have heard of one guy in Florida whom was ticked at his R-134a new car performance, and "retrofitted" to R-406A and it still works fine after a year. We have no details on original oil type or how he flushed it. It was reported to have "awesome" cooling capacity (R-134a system must have huge condenser and larger compressor to match R-12). I suppose somebody will substitute "gasoline" for isopentane.. It might work.. Make sure it evaporates and leaves no residue... Gasoline will be harder to get a good vacuum (higher BP), and it will trash the vac pump oil and require a vac pump oil change between initial and final pump dowm. Gasoline also contains "detergents", benzene, and other nasties which are not in isopentane.. more contaminates left in the A/C system.

Isopentane Isopentane. Molecular formula: C5H12. Usage: isopentane can be mixed with n-pentane to make EPS and it also can be mixed with cyclopentane as a foaming agent for rigid urethane foam

Liquids Pentane and isopentane molecules have zigzag structures, which differ only in terms of whether the chain ... The pentane and isopentane molecules tend to get tangled, like coat hangers

Vapor Pressure Data Vapor pressure data are shown as chart for major substances. ... C8H18. Pentane. C5H12. Isopentane. C5H12. Phenol. C6H6O .

http://scienceworld.wolfram.com/info/contribute.html

Performance checking---measure the outlet air temperature AT the evaporator. Measure the suction pressure and note from the pressure gauge scale what temperature this corresponds to. The temperature of the evaporator should be about 10 degrees higher than the temperature indicated by the pressure reading. This is called "superheat". Example: The gauge reads 38 psi which is the vapor pressure of R-12 at 40 degrees. The outlet air is 50 degrees. There are 10 degrees of superheat. If the pressure is LOWER, the superheat is too high which means the evaporator is being starved for freon . If this looks normal, you need to look at your high side pressure and exit air temperature. The condenser pressure should correspond to a temperature about 10 degrees higher than the outlet air temperature. If the outlet air temperature is 120 degrees, the pressure should correspond to the vapor pressure at 130 degrees. If the pressure is much higher than this, you either have a blocked condenser or there is air in the system. If the temperature margins look OK but the evaporator is too hot (much greater than 40 degrees) and/or the condenser temperature is too low (should be around 110-130 degrees) AND the system has plenty of freon, the compressor is the suspect or the system has too little capacity.

barrier hoses-----IN cheap "nitrile" hose, imports, port-of-entry A/C addon, etc,R-406A does leak faster than R-12, and so does R-134a..even R-12 leaks faster than in better quality hoses. We reccommend to use barrier hoses, since most non barrier hoses today have rotted enough to leak anything.. 1991-1993 GM non barrier hoses may still contain R-406A & 134a. Barrier hoses were developed to contain R-134a and work fine on all blends.

Vacuum pumps--- A micron guage (an expanded scale vacuum guage) > must be used to verify that the required 29.90 in hg is pulled. > A perfect vacuum is 29.921. A guage set will be not accurate > enough. A bad or improperly maintained (probably most) pump > will not pull that deep at all. This is very true... 29.0 inches of vacuum is 25,400 microns, 29.921 is 0 microns.. water boils out at about 1500 microns.. Good practice requires 500-700 microns.. with the vac pump "blanked off" (valved off), with the micron gauge reading the system vac.. for 5-10 mins.. If any water is left, vac will float to 1500ish microns.. if leaking, it will go higher (worse vac). > > A pump that is oversized may freeze the moisture before it > can be removed by dropping the vacuum too fast. This is not completely true.. no such thing as an oversided pump.. a much larger pump will not evac any faster in many cases.. The water may freeze for awhile.. but it will "sublime" (vaporize directly)... or melt as heat returns to the area.. It takes lots of water to make chunks of ice.. and your system is probably ruined if it had that much water.. > The point is that some moisture being left in the system has > a high probability.

Oils ---- If Ester oils are used instead, they have lower lubricity than PAG oils, but they are 10X more moisture sensitive than R-12 mineral oils, and contamination can cause the Ester oils to break down into fatty acids and alcohols (their original components of formation). PAG oils are around 100X more sensitive to moisture than R-12 mineral oil. DUring system service, when it is left open, moisture can get in, causing failures a few months later (after the 90 warranty is over)

All refrigerants use "oil" of one sort or another, about 8-12 fluid oz range in the system. No matter what the refrigerant, (even R-12), this oil can be very flammable or explosive, if brought out in a rupture (in a mist or fog)..1.5oz of R-12/oil generated a 10ft fireball in a lab test. See my homepage for an R-12/oil fire, venting (in 1991 when it was legal) 3lb of R-12/oil and it sustained ignition. Oil can get sprayed on hot exhaust manifolds or cat converters in a wreck.

Word of caution: R406A is designed for oils used in R12 systems (mineral oil or alkyl benzene).

Some systems like refrigerators have a downhill run from the evaporator to the compressor and may not need any oil miscibility to return the oil. These systems will work even when charged with R-134a (in mineral oil) Other systems will just "log oil in the evaporator" and lose performance if oil does not return properly. Still other systems, notably automotive compressors only contain 5-8oz of (thick 525 SUS) oil, and a poor oil return refrigerant will cause the compressor to lose all oil and fail outright.

Oils Boiling Temp ----- Does anyone know the actual boiling pressures of refrigeration oils? >I know Copeland has stated that mineral oils boil at approximately 250 >microns. Is this figure accurate? How about POE's? Is there >information available about the boiling pressures for these? >Considering their affinity for moisture, specifiers are demanding, I >believe, vacuums which are too low and may be detrimental to the >integrity of the oil. 250 microns is about right for the mineral oils.. I am not sure about PAG oils, but I have heard that PAG is much more volatile.. Deep vacuum will not screw up mineral oils, you can pump for days, and only boil out a teaspoonfull or less, which contaminates your vac pump oil, and this self limits the vac to 250 microns. --ghg

Our research indicates that neoprene 70 is the best material for both compressor shaft seal kits

Four Seasons, Murray, and Everco have Neoprene and they are dark blue in color. GM has used a black neoprene for several years. These are available from GM dealers or AC Delco distributors.

There are also green O-rings known as HNBR. This rubber was developed for R-134a because it

was thought to have better heat characteristics. Also Ford used this material for their spring

lock fittings. They even used an odd size (thicker) to try and keep these fittings from

leaking. Autofrost will work fine with this rubber if it came from the OEMs, however HNBR

Autofrost Compatibility issues Material Safety Data Sheet

Lubricants for Natural Refrigerants site

Technical Discussions on Autofrost/R-406A MINERAL OIL MISCIBILITY TESTS OIL MISCIBILITY with R406a--- In addition to refrigeration effect, the isobutane makes this blend miscible in standard mineral oils used in CFC-12 systems. Neither HCFC-22 nor HCFC-142b by itself are very miscible with mineral oils used in CFC-12 systems at evaporator temperatures (32F). The "Upflow" evaporators and large diameter suction lines commonly found in R-12 systems may cause problems with oil return to the compressor, resulting in compressor failure, when the refrigerant is not miscible in the oil being used [2]. This blend stayed dissolved in oil (20% oil) by volume, at 32F (approximate evaporation temperature in auto A/C systems) with Suniso 5GS (525 SUS viscosity) mineral oil of the type used in auto A/C systems. Suniso 3GS (150 SUS viscosity) mineral oil (naphthanic) and Virginia KMP 150 viscosity mineral oil (paraffinic) also stayed dissolved in refrigerant at 32F. Both 150 viscosity oils were completely dissolved at 0F. Around 10% (by volume) of Suniso 525 SUS viscosity oil dissolved in the refrigerant at 0F. This 525 viscosity oil is normally used in auto A/C systems which only operate at 32F or higher. Typically, around 10% by volume, oil is circulated with the refrigerant in auto A/C systems.

R406a---- ing.--R-406A is (by wt) 55% HCFC-22 41% HCFC-142b and 4% R-600a (isobutane) ODP of HCFC-22 is .055 ODP of HCFC-142b is .065 ODP of R-600a is 0.0 This gives ODP of R-406A as .0569 ODP of R-12 is 1.000 R-406A was "requested" by some members of the stationary refrigeration industry.. The stationary industry is not like "fighting with a bunch of mean junkyard dogs" like the auto industry was "GHG-12" is not a legal name, but people keep calling it that. "Anything-12" is a brand of R-12 by ASHRAE nomenclature definiation. For "Anything", insert "Freon" (Dupont), "Genetron" (Allied Signal), "Isotron" (Pennwalt now Atochem), Solkane (Solvay), etc, etc, etc. All are registered trademarks of the company following in ()'s. Like "Xerox", many people call R-12 (dichlorodifluoromethane), "Freon". There are many different kinds of "Freon", but R-12 is the most common. You are not supposed to call it "Freon" if it was not made by Dupont. The real name for "GHG-12" is "GHG Refrigerant-12 Substitute", or more recently listed by ASHRAE as R-406A. R-406A was invented in August 1990 by me, more or less as something "neat" to do. It is currently mfgr by "People's Welding Supply" in W. Lafayette, IN. R-406A is composed of 55/41/4 weight percentages of R-22/R-142b/R-600a. R-600a is isobutane and it is used to give the refrigerant oil miscibility with R-12 mineral oils.. The refrigerant has to be miscible in the oil used, so the oil returns from the evaporator to the compressor correctly. This is the crux of the problem with R-134a and why special complex (and sometimes unstable) oils had to be developed. R-134a does not dissolve in R-12 mineral oil. Early developmental blends of GHG R-12 Substitute used 8% isobutane, but it was discovered that 4% also worked fine and it has been 4% ever since 1991. R-406A is covered under US patents 5,151,207 and 5,214,929.

Goverment Testing of Propane --- There is a Gov't (DOE) risk assesment (done by Arthur D. Little) on using propane, etc (flammable hydrocarbon) refrigerants in cars.. It found the risk increase was essentially NIL, with no impact to insurance rates either. OZ-12 and (HC-12a?) were in around 50,000 things a year or so ago, and I heard of no reports of fire or explosion, except "rigged" tests and demos to incite fear in the public. Only 1.5lbs of hydrocarbons are used in a car A/C.. You have over 100lbs of gasoline onboard also.. The DOE assessment, in worst case secarnios, such as the total hydrocarbon charge release in the passenger crpt (very very unlikely), and the ignition/explosion of it, resulted in minimal or no injuries (maybe singed hair). Windows blow out at 3Psi overpressure (preventing eardrum damage) and the "thermal pulse" is too short to be significant

Dryers --- If the hoses are nitrile, they should be changed, a car this old will almost certainly have "rotten" hoses.. Change the drier also. This holds for R-12 also. The desiccant bag in the old drier may bust, clogging the system with "clay" type powder..

Any refrigerant or blend containing a "CFC" or "HCFC" (stands for Chlorofluorocarbon and Hydrochlorofluorocarbon) contains chlorine atoms and may be detrimental to PAG lubricants used in R-134a systems. "HFC" means hydrofluorocarbon (e.g. HFC-134a) and contains no chlorine. In order to use a chlorinated refrigerant (see below table) in a R-134a system containing PAG oil (unless you have Daphne PAG), one must take apart the system, and use a suitable flush to remove *ALL* the PAG oil. Then remove the compressor and place it on the bench, and dribble mineral oil (Ford part # YN9 is a good choice) into the compressor intake while turning it over 40 or 50 times to work out the PAG oil. The drier should be changed to XH5 or XH9 desiccant if it is XH7 (134a only) desiccant. Recharge with a chlorinated blend or R-12.

The desicant cylinder, of course, need to be > > changed, but questions remain about the compatibility of XH-7 > > desicants with R-22. XH-9 is ok, but not widely available. So > > from a "sweat equity" standpoint, an R406a retrofit is just as > > labour extensive as a R134a retrofit. > We haven't seen any problems with R-406A in XH-7, but it will absorb less moisture than XH9 or XH5. XH9 was going to take over the market as the "universal" dryer for all refrigerants, but the auto industry quickly realized that this would help the blends, so they got XH9 stopped everywhere they could, trying to do a PR campaign

GHG-12 contains 8% isobutane by weight. It is present in order to >: dissolve the mineral oils present in A/C systems R-600a is isobutane and it is used to give the refrigerant oil miscibility with R-12 mineral oils

GHG REFRIGERANTS GHG REFRIGERANTS. ( now known as Autofrost or R-406A)

SELF SEALING Refrigerant® that works [Cryochem] Hummers www.aircondition.com Vegas' home page www.greenchill.org other links

name R12 CFC-12 100% (dichlorodifluoromethane) R22 HCFC-22 100% (chlorodifluoromethane)

R142b HCFC-142b 100% (chlorodifluoroethane) R124 HCFC-124 100% (chlorotetrafluoroethane)

R406A/Autofrost-X3 HCFC-22 55% / HCFC-142b 41% / Isobutane 4%

R414A/Chill-it/Autofrost-X4/GHG-X4 HCFC-22 51% / HCFC-124 28.5% / HCFC-142b 16.5% / Isobutane 4%

FRIGC FR-12 HFC-134a 59% / HCFC-124 39% / Butane 2%

FREE ZONE RB-276 HFC-134a 79% / HCFC-142b 19% / lubricant 2%

Freeze 12 HFC-134a 80% / HCFC-142b 20%

HOTSHOT/R-414B HCFC-22 50% / HCFC-124 39% / HCFC-142b 9.5% / Isobutane 1.5%

Firstly, the boiling point of R-134a is about -15F compared to R-12 at -21.6F. (at one Atmosphere).. This causes 4 or 5 degree warmer duct temperatures unless the system is modified by setting low pressure cutout lower to compensate.

To Find Leaks www.aircondition.com www.aircondition.com

Oil-Refrigerant research conducted at Luleâ University in Sweden.
Lubricants and refrigerants @ CPI Engineering
ARI homepage.

Hoses ---- Many newer cars have barrier or poly lined hoses---- 1991-1993 GM non barrier hoses may still contain R-406A & 134a. Barrier hoses were developed to contain R-134a and work fine on all blends.

As far as system pressures > > go, R406a, like R134a will cause higher pressure, > > I don't think so. R-406 certainly won't push the high side up around > 300psi like R-134a can.

R-134a test on human and he almost died--- HFC-134a. The exposure concentration was 4000 ppm (0.4% v/v) and was scheduled to last for 30 minutes with a 5 minute postexposure evaluation period as was accomplished in the Halon 1301 portion of the study. Approximately 4.5 minutes into the exposure, the subject lost consciousness and both pulse and blood pressure dropped to zero." The test was aborted and medical personnel intervened and revived the subject. Suppose it wasnt a test in a medical lab, that person would be "dead". The industry, has in general, tried to "coverup" this "problem", often reporting "Human Subject Faints During Botched Air Force R-134a Inhalation test". They then go on to theorize that the nurse wiggled the blood drawing needle and that made the subject "faint". See (on the web) www.autofrost.com/humanhal2.pdf to download your own copy or call Monroe Air Tech at 1-800-424-3836 for a copy. Be your own judge. Using "0.4%" (4000 ppm) parts per million of R-134a vapor in air as the "lethal" amount, the following calculations were performed on several late model cars. They assume a bad evaporator leak or rupture, allowing the factory listed charge amount to escape into the passenger compartment. R-134a is heavier than air, so if the air is not "stirred" by a fan, heavier concentrations will be found in low spots and lower in high spots. For these purposes, we will assume the air is stirred and the concentration is uniform

If he tries to light a cigarette, depending on the conc, he wont be able to light his lighter or it will light (green flame), and he will get a lungfull of Hydrofluoric acid on his first drag from 134a breakdown from the flame. Running the A/C fan on "normal" brings in fresh air and should help out while stopped.

Check out -- www.ilm.mech.unsw.edu.au/pub/archive/HC/news/toxicity.html They have some "tips" on dealing with 134a leaking.. --ghg

Evaporators made of copper tubing wont typically fail like the accordian types and can stand full high side pressure (450 PSIG). However, things can happen like expansion valve nuts can vibrate loose, etc, causing large leaks. If somebody wants to make some money, there probably is a market to sell a "mobile" R-134a (all refrigerants) leak detector that runs off cigarette lighter, like home CO and smoke detectors. You could get out easily (unless wrecked and pinned in). Hand held R12/R134a detectors now are about $80 and use a single 9V battery.

Ford F150* 80 2.38 109,778 27.4

PT Chart Index

... Freon-116. R-411A. Freon-134 (Not 134A) R-411B. Freon-152A ... ICI Klea-61. ICOR HOTSHOT. Isceon 49 ...

Silicon used in A/C Dryers Silica and Clay. Silica and Glass. References.

A heat Pump outline workings A 4 way reversing valve is used to swap the functions of the evaporator and condenser in order to change from cooling to heating mode Types of Split System Heat Pumps ---> "All Electric" and "Add On".

High Performance Oilless Commercial Refrigerant Recovery System - good inside of machine

SKU: AC0535 Category: Ports / Valves / Caps
Blow off valve w/HNBR O-ring
Description: 3/8", 24thrd (495-525 PSIG)
Price: $3.60

R-134a Retrofit Adapter
Description: R-134a Retrofit Adapter, 7/16-20 (1/4" to 13mm) w/ red cap and valve core - Steel
Price: $3.36

CHARGE PORT TEE FITTING
Description: Allows you to weld/braze a charge port to 3/8" line
Price: $3.38

R-134a AuToMoTive Can TaP VaLve 1/2" ACME FittinG $7.95

A/C Adaptors

Composite Hose specs

Compressor Hose Blocks

Barrier Refrigerant Hose $1.50 per foot

Aluminum Brazing Rod/Flux Core

Price $2.00

Braze Weldable Aluminum Fittings & Tubes FEMALE O RING TYPE
Size #6 (3/8") Tube Size
Price: $2.05

Low/High Pressure Cut Switch ( HPCO)
Fits 3/16" R12 Service Port
Steel 1/4" Female Switch Port with 16 MM Charging Port.
Binary Pressure Switch
Low opens at 28 PSI
High opens at 384 & closes at 256-340 PSI
Red Service Cap
Wiring Harness and Switch Adapter$19.58

Braze Weldable Aluminum Fittings & Tubes
ALUMINUM TUBE FEMALE O RING/BOTH ENDS - CAN BE CUT TO REQUIRED LENGTH AND USED WITH BRAZE/WELD ON FITTINGS
Description: Size #10 (5/8") Tube Size 3 feet length
Price: $7.62

HOSE FERRULES
Description: Size #6 Hose Ferrule for reduced dimension hose
Price: $0.24

16mm high side service port 134A - HIGH FLOW DESIGN
Price: $0.93

Mineral Oil One Quart For R12 or R22 Systems $4.56

Brass TEE, With Depressor A31852 $5.33

SPOLAN Moisture Indicator w/ sight glass $0.99

Type A & B Silica Gel

Air Conditioning System Upgrade

R-12/R-134a Adapter - 15400/15600 for Vacuum Pumps $13.46

Copper TUBE EXTENSION, 1/4" OD x 1/4 Male Flare$1.76

MOISTURE INDICATOR SOLDER TYPE, SIGHT GLASSES AND MOISTURE INDICATOR, 2- {5/8 PORTS}

REFRIGERATION OIL ACID TEST KIT: DETECTS ACID IN COMPRESSOR OIL. $ 7.16

R-134a AuToMoTive Can TaP VaLve 1/2" ACME FittinG $7.95

HOSE CRiMPER Air Conditioning Tools MasterCooL $145.00

F 250 1987 - 1991

A/C barrier hose #10 5/8"

FT.$4.10

ZX179609P $44.95

Universal A/C Hose Kit #6-18" 3/8"

$10.59

Universal A/C Hose Kit #12-18"

$15.35

Universal A/C Hose Kit #8-18"

$12.39

Universal A/C Hose Kit #10-18" 5/8"

$13.58

#10-30"

$18.06

Part 6061 - Brass Screw in Depressor (#6061)

Price: $0.37

Robinair 18514
3 Pc. A/C Hose Ball Valve Adapter Set
Order# ROB18514 $31.36

Left-hand threaded fitting for the low side of the vehicle. $2.50/ea

Part 6060 - Brass Push in Depressor (#6060)

Price: $0.37

Refig tap 3/08

Supco BPV Series BPV31 Bullet Piercing Valves 1/4", 5/16", 3/8"
Code: BPV31
Price: $3.25

Test for i think 608 HVAC Tables

Any substance that boils at a reasonable pressure in the 30-40 deg f range, and condenses at a reasonable pressure in the 100-140 deg range, and whose critical temperature (the temperature above which the substance will not liquefy regardless of the pressure) is sufficiently high will work as a refrigerant.

Gaz CV 470 Butane/Propane Cartridge - Stoves and Fuel 80% butane / 20% Propane mixture for sale

Propane / Butane Fuel Performance Tests, Adventure Sports Online - read this

isobutane - Encyclopedia.com

AirConditioning faq

proposal

(WO/2002/026913) FLUOROCARBON REFRIGERANT COMPOSITIONS

R-134a Conversion Proves Itself A Growing Service, Larry Carley ...

Expansion valves (John De Armond)

No Excuses - Domestic Refrigeration

Primus LP gas mixture with 70% butane, 20% propane and 10% isobutane

How Refrigerators Work

Table of Contents by Chemical Name
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Special Gas Services - IsobutaneISOBUTANE () A flammable, colorless, liquefied Gas ... 58.12 Isobutane (C4H10)

REFRIGERANT ID SPECIFICATIONS IN MARK V DATA FILE

Quest Consultants Inc. Thermo Properties Page CH4 2 = Ethane, C2H6 3 = Propane, C3H8 4 = Isobutane, C4H10 5 = n-Butane, C4H10 6 = Isopentane, C5H12 7 = n-Pentane ...

An HFC-134a retrofit may cause the vehicle to be scrapped early. Existing chlorides which cannot be flushed out cause the PAG oil to fail and wreck the system. If the system was ever flushed with R-11 (considered good practice before the ozone mess), the 134a Oil oil may last only a few weeks before failure.

Polyol Ester (POE) oils are more tolerant of residual chlorides than PAG oils, but Esters are VERY moisture sensitive, they have to be shipped in metal cans..and can easily break down into fatty acids and alcohols (formation products) under some conditions. Bare steel and heat are two catalysts for decompostion. A number of "passivators" are being tried and vary from oil to oil to try to combat this.

ALL Freon Chart ---- Very Good Chart ---- Chart Index R-13. Ammonia. R-21. Arcton(R) TP5R. R-22. Arcton-115 ... Atochem FX-220. R-125. Autofrost 406A. R-1270. Autofrost-X4 ...

WATER CAPACITY	NET REFRIGERANT WEIGHT	GROSS CONTAINER WEIGHT
25	20	37
30 lbs	24 lbs	38 lbs
50 lbs	40 lbs	59 lbs
95 lbs	76 lbs	118 lbs
145 lbs	98 lbs	153 lbs
238 lbs	190 lbs	274 lbs

R-22 R-134a R-123 R-11 R-12 R-502 R-113 R-500 R-404A R-408A
R-409A R-401A R-401B R-402A R-402B R-410A R-507

Refrigerants Cross Reference Guide

A every thing page

Gas - encyclopedia article about Gas.

Boiling Points371F (188C) R 11. 75F (24C) R 12 ...30F (-34C) R 410a - 62F (-52C)

Organic Chemistry I (CHEM 235) Organic Chemistry II (CHEM 335)

Ethane Butane Cycloalkanes	Substituted Cyclohexane	Sterochemistry	S_N2 Reaction	"""""""Refrigerants"""""	Home		Sulphur Hex
Site url	Rare Gases	Oxygen		Gas Mixtures	Other Spec Gases		Hydro- carbons
IUPAC name	Molecular Formula	Structural Formula	boiling point (F)	Boiling Point (°C)	Melting Point (°C)	Density (g/ml, 20°C	Pressure @ 70 F


CFC-11 or R-11							13
CFC-12 or R-12	Dichlorodifluoromethane replaced by 134a						70
CFC-13 or R-13							456
R-22 about $109 / 30	replaced by 410a						121
R-134a	Tetrafluoroethane	CH`2`FCF`3`		Firstly, the boiling point of R-134a is about -15F compared to R-12 at -21.6F. (at one Atmosphere)..			110
401a about $230 / 30
401b

R404 about $235 / 30

407A							163
408 about $290 for 24
409 about $233 / 30 lb
R 410a	Replaces R-22	(50% R-32 and 50% R-125)	- 62F	(-52C)			270-470
CFC-500 or R-500	replaced by 412		-16F				85
CFC-502 or R-502							126
507 about $306 / 25lb
508A							260
AMMONIA				one gram of ammonia absorbs 327 calories of heat BP-33° C (-27.4° F)			117

Carbon Dioxide							830
Hydrogen

Methane	CH₄	`CH₄`		-161.5	-182.5
Ethane	C₂H₆	`CH₃CH₃`		-88.6	-183.3

ISOBUTANE R600a				isobutane boils at -11.7° C (10.9° F			31
ISOBUTYLENE							24
butane	C₄H₁₀	`CH₃(CH₂)₂CH₃`		-0.5	-138.4
trans-2-BUTENE
cis-2-BUTENE
1-BUTENE
n-BUTANE				-0.5° C (31.1° F);			16
1, 3-BUTADIENE
`Cyclopentane`
ETHANE							544
ETHYLENE				-103.9° C (-155.0° F).			1200
MAPP Gas	C₃H₄						97.
Pentane	C₅H₁₂	`CH₃(CH₂)₃CH₃`		36.1	-129.7	0.626
Propane	C₃H₈	`CH₃CH₂CH₃`		-42.1	-189.7		109 124.9
Propyne	C3H3N 151			C -23.2
`propene`				C -47.6
Propylene							136
Hexane	C₆H₁₄	`CH₃(CH₂)₄CH₃`		68.7	-95.3	0.659
Heptane	C₇H₁₆	`CH₃(CH₂)₅CH₃`		98.4	-90.6	0.684
Octane	C₈H₁₈	`CH₃(CH₂)₆CH₃`		125.7	-56.8	0.703
Nonane	C₉H₂₀	`CH₃(CH₂)₇CH₃`		150.8	-53.5	0.718
Decane	C₁₀H₂₂	`CH₃(CH₂)₈CH₃`		174.1	-29.7	0.730
Iso
Isobutane	C4H10			-12°C