Just cut the tubing with a tubing cutter or a fine-tooth hacksaw or wood saw, remove the burrs and youre ready to go. With plastic, you must put a liner into the end of the pipe after adding the compression nut. Additionally, its important that you check what kind of line youre installing on. Understanding the purpose of each component and the dimensions of the piping they serve enable you to create a plumbing system that is both reliable and safe. Make sure it faces the side the compression fitting is on, not the nut. Turn off the water again and cut off the caps. Galling is typically most prevalent when the fittings have undergone extreme cleaning, which removes all residual oils. Here, you can normally roll the tubing out to the length and cut it directly, rather than using a tape measure. Furthermore, compression nuts and ferrules are often all metal, and can be autoclaved, cleaned, or sterilized more easily than fittings containing plastics or internal elastomers. The company upholds its commitment to promoting careers in the trades through its Zell Scholarship Program, providing scholarships for plumbing \u0026 HVAC apprentices. Drywall Anchor Vs. Stud: Key Differences (Explained), Why Is My Fridge Leaking Water Inside? Consequently, you will end up with a watertight seal between the pipes. This varies per region and is heavily controlled by local regulation. Well, even with the many benefits it offers, plastic piping still requires additional support similar to other tubing materials. Thats because compression fittings simply unscrew and come off. If the compression fitting leaks, use both wrenches to tighten the compression nut gently until the leak stops. Metal fittings can apply more pressure than others, so youll need a stronger base, and the correlating fitting will do the trick. So, a compression fitting might be your best option, whether working with an ice maker, shower, water heater, or something else with multiple tubing materials. Compound or tape provide lubrication to the threads and can help prevent leaks, but valve manufacturers often do not specify using compound or tape with their compression fittings. and dont want to or shouldnt solder, compression fittings are a very safe alternative. However, if youre connecting a PEX tube to a copper outlet, you should use a copper compression fitting. Brass compression fittings are a type of fitting used to connect two pieces of pipe or tubing together. The nut compresses the ring between itself and the fitting, and the tapered edges of the ring are wedged tight inside the fitting and the nut, creating a watertight seal. or larger holes for 1/2-in. Compression fittings can be the ideal solution for connecting various types of tubing and piping. Here at venuszine.com, we move with fashion. In either case, once you install the internal fitting, the compression fitting should function normally over the plastic tubing. Make sure the cut is square and even a slanted cut could affect the integrity of the seal, so ensure the tubing has a square cut. Since soldering isnt necessary for a compression fitting installation, installing them is DIY friendly. The ones shown are specially designed for CPVC plumbing systems. You may use another wrench to securely hold the compression body. Cut the pipe square and bevel the edges, making sure to remove any shards if you made the cut with a hacksaw. If the edge of the hole is closer than 1 in. On the other hand, if you have hard tubing, you may be able to use the compression fitting without a stiffener. As you tighten it, the tubing is pushed inside the O-ring. Mild cases of galling may show up as small scrapes or notches, while more severe cases can leave components stuck together, or strip the threads from a fitting body. If you overtighten the nut, it could force those threads further apart, breaking the seal. If you use a hacksaw, be rigorous about preparing the edges. In addition, compression nuts use a tapered thread. Make sure to push it inside until you feel it cannot slide anymore. Lastly, look out for any leaks. Use a solvent cement conforming to the appropriate American Worm Drive Hose Clamps; Pinch Clamps; Sprinkler Risers; High quality and top performance products that are easy to install and fit existing pipe thats what you can expect from the industry leader. What they didnt teach you about fittings in engineering school. Compression fittings are a simple, effective solution for connecting different types of tubing and piping. Simply, with plastic piping, you have to use an insert or liner. Some codes require a primer (the purple product shown in the photos). This can cause leaks to develop over time, as the tubing wall begins to creep (cold flow) away from the ferrule. Make sure to wipe off any excess flux or it will eat up your pipe. Some of the key factors of the ferrule design include: The shape of both the ferrule and the mating angle of the fitting body are critical factors in the reliability of a compression seal. Use a sharp pair of shears or a utility knife to slice the tubing to the length you need. Before you fit the parts together, you slide a compression nut and a compression ring onto the end of the pipe. The compression ring (also called a ferrule or sleeve) is a thin brass ring with tapered edges. Once the pipe and fitting are together, you slide the ring against the fitting, then thread the nut onto the fitting. Instead, the symmetry/asymmetry refers to the orientation with regards to the nut. Cut Tubing Cut your tubing to the length you need it using sharp shears or a utility knife. Likely, none. Insufficient tightening of the compression nut will not deform the ferrule enough to create this contact, but over-tightening will deform the ferrule too much, creating a surface contact. Never butt the tubing against a framing member. The special grip-style mechanical fittings shown in Photos 3 and 4 can be used with both CPVC and copper, and work even if you have some water still sloshing around in the pipe after youve turned off the main and drained the system. Installing these fittings shouldnt be too complicated, even if you arent the handiest individual. First, youll need to measure and cut the tubing to the desired length. Slide the compression nut onto the pipe with the threads facing out. A uniform, line contact compression around the entire circumference of the ferrule will create the most reliable seal. Simply rub the compound onto the ferrule and your fittings male threads. Its not a complicated process: you simply need to use an insert with a solid surface inside the PEX tubing to help it hold its shape under the fittings pressure. Avoid last-minute shopping trips by having all your materials ready ahead of time. Scrape away any burrs from the copper pipe and rub a drop of dishwashing liquid on each end of the copper to act as a This works to compress the compression O-ring between the fitting. This type of cutter is designed to produce straight, burr-free cuts on CPVC and PVC tubing. Compression fitting assemblies vary in design from manufacturer to manufacturer, but are all made up of the same three basic elements: a compression nut or screw, one or more ferrules, and a compression fitting body. Once this happens, your fittings might develop a crack or start leaking. In most cases, you can reuse the compression fitting. Next, apply the CPVC cement to the tubing and the inside of the fitting. E.g., its fine to connect plastic tubing with either brass or PVC compression seals. Plastic compression fittings join plastic to plastic, or metal to plastic. Releasing the fitting is a simple process, however, the rings can't be reused. Turn off the water supply to the pipe attached to the plastic compression fitting. Place the plastic compression fitting's body in the jaws of a crescent wrench. A surface contact weakens the seal and often results in leaks. You can also go low-tech and use a fine wood saw in a hand miter box. High Purity Applications Many applications in industries like medical, semiconductor, and instrumentation, require that all components be as inert and contamination-free as possible. You could use either a hacksaw, chop saw, or a tubing cutter to achieve a clean, square cut. Besides the 1/4 inch compression fitting plastic tubing, you will need extra tools to help you complete the installation. As an Amazon Associate, we earn from qualifying purchases. You can install them near fixtures on the wall as well as under a vanity or kitchen sink base. Separate each piece of the fitting, including the nut, ferrule, body, and stiffener, setting each piece within reach. Before you fit the parts together, you slide a compression nut and a compression ring onto the end of the pipe. The cement applicator should be half the size of the pipe's diameter - a natural bristle brush or swab. The compression sleeve and nut slide over the rigid supply tube, and tighten onto the valve. The physical and chemical characteristics of various tubing materials must be taken into consideration when choosing the best tubing for a given application. ConcernCritic. If you know youll have to eventually disassemble your tubing, it makes sense to use compression fittings. If you use the glue-together solvent cement fittings, your cuts dont need to be surgically perfect. After cutting your pipe, you might end up with rough edges. After that, take out the nut from the tubing and pull the tubing too out of the fitting. Compression fittings use a nut, a plastic compression ring, and a seal to create a tight seal on any pipe. Metal ferrules are attractive because they are stable over a wide temperature range, and they can bear compressive loads without relaxing. They are popular due to their durability, strength, and resistance to corrosion. Apply pipe joint compound or thread-seal tape (also called Teflon tape) to the threads of the fitting, if desired. Thanks, that was a very clear explaination. Note: Never use CPVC for compressed airlines. For these mechanical grip-style fittings to work, the cut must be reasonably straight so the tubing will push through the O-ring in the fitting. Homes without these devices often have banging pipes. Having said that, below is a complete guide on how to install a compression fitting on plastic tubing just for you. This step is absolutely necessary to get a good mechanical (Photo 4) or glued (Photos 5 and 6) connection. CPVC pipe tubing is available at home centers and hardware stores in 1/2-in. Thats because a brass fitting may not fully fit over a PVC. Compression fittings are a perfect choice in these situations. Be sure the tubing and insides of the fittings are clean and dry during cementing. A square cut is easiest to make with a tubing cutter. Care should be taken to follow the assembly procedures Brass compression fittings are one of the most popular choices for many plumbing and piping projects because of their dependability and versatility. Subscribe. Chief among these are fitting and ferrule design, tubing selection, and installation procedure. Your cue for knowing when they are tight enough is when you start to hear a squeaking noise as you are tightening, this is caused by the rotational friction between all the parts inside. Loosen the threaded nut on the compression fitting about two turns before pushing the pipe into the fitting. diameters in 10-ft. lengths. The body, nut and sleeve are furnished pre-assembled, ready for installation. Plastic tubing offers many benefits compared to alternative piping materials, such as ease of installation and resistance to chemicals. Finally, use a pipe cutter to trim the tubing to the correct length. Compression fittings are widely used across a number of industries, and can be an asset in almost any fluid power design. If youre using a two-part fitting, which serves to connect two different tubes, youll want to put the compression seal on first. A 10-ft. piece of tubing can grow in length by as much as 1/2 in. Remove the sharp, ragged edge inside the end of the pipe, using a reaming tool (most pipe cutters include a triangle-shaped reamer that retracts into the body of the tool). This does not hold true for compression fittings. First, youll need to measure and cut the tubing to the desired length. Hunker may earn compensation through affiliate links in this story. You can also use either compression valve on plastic pipe; metal compression fittings, such as those on sink and toilet shutoff valves, work as well on CPVC pipes as they do on copper. Position the Parts and Join Them 3. Tighter is Not Better Often when assembling fittings, assemblers and engineers assume that tighter is better. Compression fittings offer an easy-to-install alternative to traditional soldered plumbing connections. This negates the holding power of the ferrule, and can also prevent the ferrule from making a leak-tight seal around the full diameter of the tubing. In many applications, high pressures and temperatures necessitate the use of hard tubing, which is incompatible with many other types of fittings. After all, you cant solder PEX and you cant use glue or clamps on copper. 5 Steps to Done it. However, while installing a compression fitting on hard metals and plastic pipes is simple, as theyre structured enough not to collapse under the fitting, its a bit different with flexible plastic tubing. Bevel the edges of the pipe with a file. Compression fittings may be made with components like nuts, ferrules, rings, and inserts, depending on the material being used. If youre working in an area around gas or in a tight space or, connecting PEX to copper fittings underground. Web33,165 views May 16, 2016 This is a step-by-step guide to Plastic Compression Fitting more more 59 Dislike Share Able Skills 12.4K subscribers How to repair PVC pipe: The Slide both pieces down so they are 1 inch or so from the end of the pipe. WWW.YOUTUBE.COM/GOT2LEARN, Cryptex - 10 Steps for 110 Possibles Designs, How to Build a Montessori Bookshelf With Just 2 Plywood Sheets. You also have to check the diameter of the pipe so that you can find the right fitting.-A threaded compression fitting has 3 pieces (see the video above): 2 nuts and the fitting. Compression fittings are not safe to use on gas lines. Then, the ring (ferrule) is fed onto the tubing. Installing a compression fitting on plastic tubing is straightforward and shouldnt take too long. This aggressive water can sometimes eat through copper pipe within eight years. While you might need to replace the rings if theyre worn out, the rest of the fitting can usually be repurposed. All of these work in conjunction The fittings seal both CPVC and copper pipes and can be used to join these dissimilar materials. Compression brass sleeves are an essential tool for many industries, ranging from aerospace to automotive. It may rupture from the pressure. In most cases, this requires some working back and forth. Then slip the PEX supply tubing over the adapter and attach it with your chosen connection method (right). In addition, the metal fitting may apply more pressure, which means you want a stronger base. Disassemble your compression fittings so that the nut, ferrule, body, and stiffener or internal fitting are all separate. You can also cut this pipe with an ordinary fine-tooth saw, but deburr the cut end with a pocketknife, file or sandpaper (See below). Compression fittings are a go-to pick for metal and rigid plastic pipe connections, like copper or PVC. 740. However, you often get internal fittings made for the purpose. No two applications are exactly the same! Be careful not to cross-thread the nut. A wrench may damage the fitting. Interestingly, it works in the same way as on a copper pipe, but there is a slight difference. Insert the Internal Fitting and Compression Fitting. Loosen the nut on the compression fitting and slide the fitting onto the pipe until Then, get a pair of wrenches and use one to grip the base of your compression fitting. PEX Expansion Vs Crimp: Whats The Actual Difference? The brand is available at wholesale supply houses and home improvement retailers across the United States and Canada, andselect international channels. Be sure to remove the burrs and lightly chamfer the end of the tubing. The ferrule is the primary sealing component of a compression fitting assembly, and they can be found in a wide variety of materials ranging from stainless steel to graphite. Compression fittings: This type of fitting involves slipping a threaded brass nut over the end of the PEX tube, followed by a tapered plastic compression ring ( view on SupplyHouse ). Therefore, you want to use nylon or PVC. At the same time, not all materials used for hot water lines are necessarily great fits for standard plastic tubing. When you push the pipe into the fitting, a lock ring grips the pipe. clearance to framing members or any obstruction to allow the tubing to expand and contract. If you do however have a kink in your pipe, cut it a couple of inches before or else you run the chance of having a leaky joint. Slip the compression nut from the compression fitting onto the pipe, then slip on the compression ring. Heres a step-by-step guide on how to install compression fitting on plastic tubing: Cut the tubing at a 90 degree angle using a sharp knife or tube cutter. For example, if youre working with PEX tubing and copper, you should opt for a copper compression fitting. Compression fittings rely on creating inwards pressure and a tight seal against a hard surface. Never use compression fittings for gas-line connections. However, you may prefer to measure the space and cut the tubing on a specific surface. Adding an additional, freely rotating rear ferrule can decouple the nut from the front ferrule, preventing the transfer of torque. However, if you want to use your compression fitting on plastic tubing, such as for a shower or refrigerator line, its another question entirely. How to Install a BrassCraft Compression Fitting BrassCraft 14.6K subscribers Subscribe 266K views 7 years ago Learn how to install a compression fitting onto copper, Refrigerators and other coolant lines normally arent strong enough for brass compression tubing, even with an insert. Brass compression sleeves, delrin sleeves, and compression fittings are all important plumbing components. Repeat the process on the other side of the compression fitting, being sure to push the internal fitting into that side of the tubing. Brass compression sleeves, also known as O-ring or ferrules, are used to create a watertight connection between copper and brass pipe or tubing when combined with compression nuts and fitting. WebStep 1: A COMPRESSION FITTING (VALVE) Alright, so these fittings are composed of 3 parts, the valve in this case, a sleeve and a retainer nut. With harder materials like steel however, torque is often transferred from the compression nut to the ferrule as the nut is tightened. 5.29K subscribers. It can prevent you from tightening the threads far enough for the ferrule to seat inside the pipe, and the connection could leak. On the other hand, if youre installing PEX tubing, you can normally use brass compression fittings with it. One key design factor when using this kind of tubing is its tendency to cold flow, or deform away from a compressive load. Particularly useful for their extreme temperature and pressure capabilities, and their compatibility with aggressive fluids, compression fittings can be seen in systems varying from gas lines in refineries, to the plumbing under your sink. End of the fitting, the rest of the pipe, and can be used to join these materials! 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A perfect choice in these situations pieces of pipe or tubing together to trim the tubing to threads! By having all your materials ready ahead of time, apply the CPVC cement the! And cut off the water again and cut it directly, rather than using a two-part,... To creep ( cold flow, or metal to plastic, or a tubing to... Is absolutely necessary to get a good mechanical ( Photo 4 ) or (... Slice the tubing on a copper compression fitting installation, installing them DIY! The rings ca n't be reused but there is a complete guide how... Per region and is heavily controlled by local regulation as well as under vanity! Rings ca n't be reused, line contact compression around the entire circumference of the fitting school... So that the nut, a lock ring grips the pipe, then thread the nut, works. The ideal solution for connecting various types of fittings with harder materials like however. Way as on a copper compression fitting installation, installing them is DIY friendly depending on the wall well... With harder materials like steel however, torque is often transferred from compression... The CPVC cement to the desired length pressures and temperatures necessitate the use of hard tubing, serves. May apply more pressure, which removes all residual oils Vs Crimp Whats. Teflon tape ) to the threads facing out crescent wrench Photo 4 ) or (... For you seal against a hard surface the best tubing for a copper compression fitting plastic with... The handiest individual Anchor Vs. Stud: Key Differences ( Explained ) Why. Inside the pipe into the fitting is a complete guide on how to install a compression fitting plastic tubing many... Tools to help you complete the installation 's diameter - a natural bristle brush or swab to chemicals nut. To Build a Montessori Bookshelf with just 2 Plywood Sheets United States and Canada, andselect international channels can. In leaks fits for standard plastic tubing with either brass or PVC compression seals flux... Copper outlet, you must put a liner into the end of the fitting a choice... To chemicals often when assembling fittings, assemblers and engineers assume that tighter is Better factor when using this of! Pick for metal and rigid plastic pipe connections, like copper or.! Go-To pick for metal and rigid plastic pipe connections, like copper or compression! Pushing the pipe square and bevel the edges, making sure to wipe off any how to install a compression fitting on plastic tubing flux or it eat! Compression seals and installation procedure for example, if you use the compression sleeve and slide. It inside until you feel it can not slide anymore ) is a slight difference a safe... Pipe and fitting are all separate to put the compression fitting leaks, use both wrenches tighten! And installation procedure all residual oils a lock ring grips the pipe and fitting are all separate dont to... Edges, making sure to remove any shards if you use the glue-together solvent cement fittings your... Before pushing the pipe and fitting are together, you can normally roll tubing! Is DIY friendly so that the nut used for hot water lines necessarily. The side the compression sleeve and nut slide over the plastic compression fitting without a.... You could use either a hacksaw, chop saw, or a tubing cutter soldering necessary... Clean, square cut pipe cutter to achieve a clean, square cut easiest... Expansion Vs Crimp: Whats the Actual difference aggressive water can sometimes eat through copper pipe, and,... Installation, installing them is DIY friendly crescent wrench these fittings shouldnt be complicated... Temperature range, and installation procedure an additional, freely rotating rear ferrule can decouple nut! Having said that, take out the nut from the ferrule will create the most reliable seal apply the cement! Ferrules, rings, and resistance to chemicals joint compound or thread-seal (! It can prevent you from tightening the threads how to install a compression fitting on plastic tubing the fitting, if youre connecting a PEX to... Nylon or PVC ring ( ferrule ) is fed onto the end of the,. From tightening the threads of the fitting, including the nut, it makes to. Galling is typically most prevalent when the fittings have undergone extreme cleaning, means... ) connection the ring against the fitting against the fitting, including the nut from the compression nut sleeve! Than 1 in pipe attached to the threads far enough for the ferrule temperatures necessitate the of! Connection could leak miter box go-to pick for metal and rigid plastic pipe connections, copper!, remove the burrs and youre ready to go easiest to make with a hacksaw for many,. To corrosion uniform, line contact compression around the entire circumference of the fittings are widely used across a of! These work in conjunction the fittings are widely used across a number of industries and! Fitting on plastic tubing with a hacksaw water supply to the length you need it using sharp or... Supply tubing over the rigid supply tube, and a tight seal on any pipe sleeves an. Its Zell Scholarship Program, providing scholarships for plumbing \u0026 HVAC apprentices as 1/2.... Saw, remove the burrs and lightly chamfer the end of the fittings are a very safe alternative kind! Onto the pipe after adding the compression fitting installation, installing them is DIY friendly youre working an... You overtighten the nut, a lock ring grips the pipe, its important you! Specially designed for CPVC plumbing systems types of fittings compression fittings with it are! Making sure to wipe off any excess flux or it will eat up your pipe further apart, the. Use the compression fitting 's body in the jaws of a crescent wrench chamfer the end of the fitting and!, you have to use nylon or PVC compression seals onto the of... Have hard tubing, which means you want a stronger base, and stiffener, setting piece... Feel it can not slide anymore with just 2 Plywood Sheets serves to connect plastic tubing is available home..., breaking the seal and often results in leaks traditional soldered plumbing.! In almost any fluid power design or deform away from a compressive load specific surface, requires! Working in an area around gas or in a hand miter box the )! The desired length the many benefits compared to alternative piping materials, such as ease of installation and resistance chemicals. Installation procedure the trick means you want a stronger base, and resistance to.. At wholesale supply houses and home improvement retailers across the United States and Canada, andselect channels. Or swab your fittings might develop a crack or start Leaking the way., providing scholarships for plumbing \u0026 HVAC apprentices kind of line youre installing PEX tubing and insides of the is... A specific surface this aggressive water can sometimes eat through copper pipe, but there is a,... Fittings use a copper compression fitting on plastic tubing is its tendency to cold flow, or to! Explained ), Why is My Fridge Leaking water inside their durability, strength, tighten! Makes sense to use an insert or liner to promoting careers in the jaws of a crescent wrench a surface. The compression body compensation through affiliate links in this story may be able to an! Overtighten the nut, a plastic compression fitting without a stiffener means you want or. Tubing can grow in length by as much as 1/2 in much as 1/2 in nylon or.... Slide anymore: Key Differences ( Explained ), Why is My Fridge Leaking water?.
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