What is the difference between a standard liquid line drier and a . 1. lines, make sure you have the correct size line based on the length of run. ! This type of tubing is used for hot and cold water supplies and the refrigerant lines found in HVAC systems. This method is increasingly used for large-volume production of high-quality, mission-critical components. 100 feet of 3/4" suction line copper tubing &100 feet of 3/8" liquid line copper tubing. 4. How to "Weld" Aluminum Without a Welder : 7 Steps (with ... A line set is simply a pair of copper tubes that connects a condenser to an evaporator. New braze furnaces allow us to produce large-size heat exchangers, up to 4800 mm long and 2000 mm high, with the microchannel tubes of different widths and a fin pitch of 10 and 24FPI. So, the big question is: I bought a 50 ft roll of Aeroquip GH134 "reduced barrier" hose a year ago (good deal) and already used 12 ft between this job and rebuilt AC suction hoses for both 300D's, and haven't even gotten to my old Mopars. Re: Alternative piping joints for VRF. In torch brazing, a variety of fuels are available—natural gas, acetylene, propane, propylene, etc., combusted with either oxygen or air. Brazing Today's Air Conditioners | The Harris Products Group US20140008417A1 - Extruded brazing ring with integrated ... It will quickly repair the compromised part of the AC line and patch it with a like color. Aluminum will start to melt at 1200deg Fahrenheit but the brazing rod will melt at around 700deg so we want to get the aluminum hot enough to melt the rod without melting the tubing. HVAC Brazing: When Your Employees Are Ready for Advanced ... Sweep the torch between the tube and coupling to bring both parts to brazing temperature. Since I have a manual AC hose crimper (Master-Cool ~$120 ebay), it was fairly easy. Refrigerant Tubing or Piping Installation or Repair FAQs ... Exceptions for air conditioning (cooling only) applications, 1/4" liquid line may be used in: i. 2. A small hole in a cap at the end of the line will allow the nitrogen to escape. Add to My List. You can find more information on page 38. ree b r a zseo-luftions tube The problems with plumbing solder are: #1, the joints are too weak; and #2, it can't handle the stresses and vibration which A/C lines experience. The most common rods used for typical HVAC brazing are 0%, 5%, and 15%, with several other levels mixed in there. The right tool for brazing or soldering pipe can be an air-fuel or oxy-fuel torch. We recommend Lucas-Milhaupt's Sil-Fos 15, Silvaloy ® 450, or Silvaloy 560 alloy. Description. More information about the (non-)feasibility of alternatives to cadmium for brazing fillers used for safety reason is given in the next section. 2. allow the fitting to fit easily onto the tubing. Brazing Equipment - Greenmill AC Soft rolled copper with 3/4" thickness rubbertex (insulation black) This copper is not pre-charged and is ideal for freon lines between condenser and air handler. Steps 3 & 4 should be done on both sides of the tube/connection. Here is the answer to whether you can braze with a propane / air torch. Don't want to be difficult but we used those many times and never had troubles with it. He can be reached at 412-734-4433, www.coldtronics.com, or joe@rhvactools.com. Super Flex Pipe is a high-pressure, high-performance flexible hose that is easily pulled through some of the thightest areas without tearing. And there is less damage to surrounding insulation. Typical applications include: Refrigeration control valves (copper and brass), joining copper wires to rotor bars, electrical connections, radiant heating systems, air conditioning units, hot and cold water lines, and heat exchanges. In line with this trend, the refrigerant R-22, which itself was an improvement over earlier refrigerants, is currently being phased out and replaced with R-410a and other alternatives. Cut them out with a tubing cutter. Zoom Lock Push Fittings by Parker Sporlan intrigued me when I first layed eyes on them, I had to test them out. The brazing ring has a generally circular body with a plurality of channels extending between opposing faces of the ring and disposed about the circumference thereof. Brazing carbide to steel for a surgical device. You should flush the system. Each unit is designed for duty optimization, with a range of unique features that ensure both superior thermal performance and maximum reliability. Add to Cart. Braze. More and more brazing alternatives are being. Rapid and precise heating results in less mass to be heated. 1. minimize oxidation while the joint is being heated. Using ZoomLock™ allows you to make ACR refrigerant piping connections without brazing. R134a Self-Sealing A/C Refrigerant Can Tap Valve. Getting the tubing hot enough may take 4 to 5 minutes. Select a Thread Type Below to See Sizes and Prices 3. A superior alternative to traditional copper HVAC pipes are SUPER FLEX PIPES. You'll notice in these sets that one line is larger than the other. New braze furnaces allow us to produce large-size heat exchangers, up to 4800 mm long and 2000 mm high, with the microchannel tubes of different widths and a fin pitch of 10 and 24FPI. So as long as you don't want to Weld, Oxygen and Propane is a great way to go! . The fuel gas flow aspirates air into a mixer that contains an internal vane that spins the gas to improve combustion and increase flame temperature. Clamp up the tubing and start heating the aluminum with a propane torch. The second method for connecting copper tubing with a mini split installation is the braze or brazing method. Joins CU to CU (phosphorus serves as flux) (Note that about 3 to 5% of the compressor oil is circulated through the system, with the rest remaining in the compressor. I am building a compressed air piping system for my shop out of 3/4" copper tubing. Oxygen and Propane fuelled kits are however, ideal for Silver Solder, Brazing, Cutting and Heating. D. Remove the faulty compressor. The body shim and carbide are cleaned and braze flux as applied to the entire surface of the assembly. 1.5 ton applications for up to 100 equivalent feet with maximum 40' vertical lift ii. In many brazing/metal joining applications, various combinations of braze alloys are used because of specific melting and processing temperatures. Cadmium-free brazing alloys start with brazing temperature of 650°C, but, for brazing temperatures in the range of 610-650°C, no cadmium-free alternative is available. Induction Brazing is very similar to the many other brazing processes done at ThermoFusion, except in this process only the braze alloy and the mating surface are heated - the rest of the part stays cool. lokring is cost effective Like Silver Solder, the Braze material bonds with the surface of the metal being joined. system. 3. keep the filler metal from dropping on the floor. For example, a 3 Ton AC would need a ¾ inch suction line when the distance is 25 feet or less, but if it's over 25 feet, you would likely need a 7/8 or 1 1/8 suction line to get your full efficiency and capacity. This means less labor and no special permits or fire watch. 3. The nitrogen keeps the tubing clean and dry preventing the onset of oxidation/corrosion. 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