Before you fit the parts together, you slide a compression nut and a compression ring onto the end of the pipe. Now, even if you get tempted to make another turn, you should not dare. 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 This article demonstrates how to cut, join and run CPVC water lines. 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. They consist of three components: the sleeve, nut, and fitting body. It is this radial compression that creates the leak tight seal between the fitting, ferrule, and tubing, and gives the compression fitting its name. In addition, compression nuts use a tapered thread. 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. Bore 7/8-in. Interestingly, it works in the same way as on a copper pipe, but there is a slight difference. Theyre a safe alternative to soldered fittings in various situations, making them a popular pick. 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. 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. Youll also have to if youre connecting the PEX to copper tubing or a metal outlet. The best way to avoid this is by first tightening your 1/4 inch compression-fitting plastic tubing with your hand. Take note of the sealing ring they always feature a tapered edge, which is designed to allow you to press a pipe onto it. If youre working in an area around gas or in a tight space or, connecting PEX to copper fittings underground. This works to compress the compression O-ring between the fitting. Mixing and Matching Components We recommend our users to update the browser. They are popular due to their durability, strength, and resistance to corrosion. Then, unscrew the compression nut from the fitting using your wrench. Support your CPVC lines every 32 to 36 in. The trick to a leak-free installation is making sure the pipe end is cut square and is smooth and clean. Or, if youre using PEX and PVC, a PVC compression fitting is your best option. Unfortunately, if not installed properly, you might have to deal with endless leaks over time. Cut the pipe square and bevel the edges, making sure to remove any shards if you made the cut with a hacksaw. It is crucial in these applications that ferrules designed to resist galling are used. This secondary sealing element makes a radial seal against the outside diameter of the tubing, independent of the seal created by the ferrule. Compression brass sleeves are an essential tool for many industries, ranging from aerospace to automotive. If the fitting or nut threads are damaged, replace the fitting. To ensure that the fitting is properly seated, what I like to do is tighten it ever so slightly, then hit the back of the fitting to ensure its seated properly, as opposed to hitting it without tightening it, it would bounce back and not seat properly. Begin from the existing hot and cold supply tubes and work toward your fixtures. Installing a brass compression fitting on plastic tubing is a simple process that doesnt require any This will slightly narrow the water passage. 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. Tighten the cutter so the cutting wheel is snug against the pipe. First, youll need to measure and cut the tubing to the desired length. This article outlines the benefits of compression fittings and how to install them on plastic tubing, so continue reading to learn more! A 10-ft. piece of tubing can grow in length by as much as 1/2 in. An asymmetrical ferrule is cone shaped, and can only be placed into the fitting body in one direction (usually with the tip of the cone facing into the fitting body). Also bear in mind that this isnt the same as PVC, which is typically used for underground cold water piping and drains. Insert the reamer into the pipe and rotate it back on forth, making a few complete rotations, while applying pressure into the pipe. How to Install Compression Fittings. 1 Step 1: Cut the tube cleanly, preferably with a tube cutter. 2 Step 2: Remove any internal burrs. 3 Step 3: Loosen nut approximately half a turn & insert tube as far as internal stop. 4 Step 4: Hand tighten then tighten nut with two wrenches until firm. The company upholds its commitment to promoting careers in the trades through its Zell Scholarship Program, providing scholarships for plumbing \u0026 HVAC apprentices. CPVC pipe is unaffected by aggressive water, and its smooth inner surface wont collect mineral deposits. Simply tighten it until you cannot do it anymore. Next up, you need to insert the brass insert inside your plastic tubing for additional support. Miniature compression fittings are found in applications ranging from chromatography and bomb detection instruments, to medical devices and inkjet printing. Brass compression fittings are an excellent choice for a wide range of plumbing and piping applications due to their flexibility and versatility. ConcernCritic. But how does the fitting work with plastic? Even so, not everyone can install the fitting correctly. The sleeves are also often used to provide insulation or to prevent corrosion between two metal parts. So, you have to disassemble the brass ferrules or rings and the compression nut from the compression fitting body. 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. E.g., connect to copper with brass and connect to plastic with PVC. Also, compression fittings can be used on leaky pipes such as broken water lines in an emergency situation. Care should be taken to follow the assembly procedures recommended by the manufacturer. Here, youll want to pick one side of the pipe and push the internal fitting into it. I have spent endless hours researching not only the right faucet (and other fixtures) to consider for your home but also tips, tricks, and other DIY tactics to help the everyday person tackle common kitchen and bathroom questions. Is Dressing up Your Pets Morally Acceptable? 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. Runs longer than 30 ft. require a U-shaped detour about 1 ft. on a side somewhere in the length to allow for expansion and contraction. Metal ferrules are attractive because they are stable over a wide temperature range, and they can bear compressive loads without relaxing. Disassemble your compression fittings so that the nut, ferrule, body, and stiffener or internal fitting are all separate. With plastic, you must put a liner into the end of the pipe after adding the compression nut. Can I use compressing fittings on plastic pipe or tubing? Here, the joint will never be under pressure. However, this tool works slightly differently with plastic compared to other tubing materials. Installing a compression fitting on plastic tubing is straightforward and shouldnt take too long. Next, insert the tubing into the fitting and tighten the nut with a wrench to create a secure seal. Be sure to remove the burrs and lightly chamfer the end of the tubing. This will give the cement a better grip. 131K views 1 year ago. If it is metal tubing it is a good idea to de-burr it. Lubricate the end of the pipe with dishwashing liquid. In most cases, its safe to use a compression fitting on any water line, providing you properly stabilize it. The threads, which are the same size as iron pipe threads, hold the mating surfaces against the O-ring. Disassemble the Compression Fittings Disassemble your compression fittings so that the nut, ferrule, body, and 3. If there is a particular design issue (for example, a tight bend radius) that necessitates softer tubing, it is important to reinforce the tubing wall. ), HardieBacker Vs. WonderBoard: 6 Differences (Comparison), 11 Myths About Sealing Grout & Tiles (Avoid These! It may rupture from the pressure. Drawing a line on your pipes can help you to know where you have to install the fitting. 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). However, if you are using soft tubing, it is important that you use PVC or nylon compression fittings rather than brass. This is true, especially if you dont know how compression fitting works with plastic. After that, get your wrench and make just one or two full turns. Install a brass compression valve on CPVC pipe in almost the same way you would install it on copper pipe. Ferrules however, are specifically engineered to create an optimal seal against both the tubing and the fitting body. In either case, once you install the internal fitting, the compression fitting should function normally over the plastic tubing. In many applications, high pressures and temperatures necessitate the use of hard tubing, which is incompatible with many other types of fittings. Compression fittings, on the other hand, are used to connect lengths of copper or plastic tubing to other components or threaded ones such as valves in plumbing systems. Then, the ring (ferrule) is fed onto the tubing. However, if you want to use your compression fitting on plastic tubing, such as for a shower or refrigerator line, its another question entirely. 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. Make sure it faces the side the compression fitting is on, not the nut. It is also important that the end of each section be squarely cut, to allow the tubing to sit symmetrically in the fitting body. Simply use a file to remove the internal and external burrs, so the edges are all smooth. Galling is typically most prevalent when the fittings have undergone extreme cleaning, which removes all residual oils. Besides being beveled, they should be completely free of plastic shards. Therefore, if youre installing compression fittings, youll want to add a fitting inside the tubing. As an Amazon Associate, we earn from qualifying purchases. As you tighten it, the tubing is pushed inside the O-ring. Some areas dont allow stab-in fittings to be concealed. Just hand-tighten the nuts on all fittings of this type. Most basic compression fittings contain a single ferrule. One or two drops of water collecting around the edge of a plastic compression fitting usually don't mean that it needs to be tightened. The alcohol will lubricate the stainless steel surfaces during assembly, and then evaporate completely, leaving no residue or contaminants behind. Youll need to retrace your steps to find the issue if theres a leak. Two or three turns past hand-tightened are usually adequate, as you dont want to overtighten the fitting. Rotate the cutter once or twice in the reverse direction. Here at venuszine.com, we move with fashion. Check with an electrician if you think youve broken the continuity of your electrical grounding. Care should be taken to follow the assembly procedures Thats because compression fittings simply unscrew and come off. In most cases, you can reuse the compression fitting. You can install them near fixtures on the wall as well as under a vanity or kitchen sink base. Loosen the nut on the compression fitting and slide the fitting onto the pipe until To this end, it is also important that the ferrule have a sharp forward edge. Why? Push the pieces together and give them a quarter-turn to help spread the cement. The functioning principle of each component also remains more or less the same between designs: tubing is inserted into the end of the fitting, and the nut/screw is tightened, forcing the ferrule(s) into the fitting body. How To Install A Brass Compression Fitting On Plastic Tubing. To create this seal, you must: Slide the nut onto your tubing. Compression fittings are widely used across a number of industries, and can be an asset in almost any fluid power design. Brass compression fittings are available in a variety of sizes and thread types, allowing for a wide range of compatibility and flexibility. You may also want to use pipe dope or PTFE tape. To completely seal your copper or brass compression fittings, you could use a pipe jointing compound or PTFE tape. In most cases, this requires some working back and forth. Open the jaws of the tubing cutter and fit it onto the pipe so the pipe rests squarely against the two flat rollers of the cutter. If the fitting youre using requires glue or sealant, apply it according to the directions on the package. Re-assembly can be accomplished in a similar manner to the initial assembly, although typically fewer turns of the nut are required, since the ferrule is already swaged to the tubing. Here, the largest barrier is that plastic tubing is soft. Caution: Wear special solvent-proof gloves for extensive work. Compression fittings are a perfect choice in these situations. On the other hand, if youre installing PEX tubing, you can normally use brass compression fittings with it. Water hammer arresters, or mufflers, stop banging pipes and prevent faucet or pipe damage. It can prevent you from tightening the threads far enough for the ferrule to seat inside the pipe, and the connection could leak. A square cut is easiest to make with a tubing cutter. Tighten Each Side Frequently Asked Questions Final Thoughts on Compression Fittings Call 1-Tom-Plumber Heres What Youll Need Asymmetrical ferrules also allow for two piece ferrule designs, as described above. These include: Get your PVC pipe and cut the tubing to your preferred size. Compression fittings are often selected for reasons beyond just leak-free sealing and ease of use. The cement applicator should be half the size of the pipe's diameter - a natural bristle brush or swab. tubing. Bevel the edges of the pipe with a file. Compression fittings are most commonly used with hard tubing because the tubing wall must be rigid enough to resist the compression forces applied by the ferrule. Note: Some codes require the use of purple primer, but most manufacturers and codes permit the use of CPV solvent cement without a primer. Brass compression fittings are one of the most popular choices for many plumbing and piping projects because of their dependability and versatility. Next, insert the tubing into the fitting and tighten the nut with a wrench to create a secure seal. Keep in mind that a crooked cut will have less surface area to cement and a greater chance to leak. If necessary, apply a cleaner or solvent to the rag to clean the pipe. 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. Never use compression fittings for gas-line connections. And this is where a compression fitting comes in. E.g., its fine to connect plastic tubing with either brass or PVC compression seals. In stainless steels, rotation of the ferrule can also produce galling and cause permanent leaks. Be careful not to overtighten the nut. 6 Easy Steps Step 1: Gather your installation tools. After cutting your pipe, you might end up with rough edges. Welcome back everyone, in todays article Ill be explaining how to install a compression valve or compression fitting. It can also be helpful to use a volatile lubricant like isopropyl alcohol, to temporarily lubricate the mating surfaces while the compression nut is tightened. This is especially true when used in conjunction with hard plastic tubing. 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 Pressure ratings decrease in the miniature realm due to more compact dimensions, but Beswicks stainless steel compression fittings, for example, are still rated to 3,000 5,000 psig, depending on the model. In addition, if your fitting type requires sealant or glue, apply it now. Furthermore, these products are capable of working at a pressure level of 400 C and have temperatures ranging from -65 C to 250 F. Brass compression fittings are reusable, but they must be replaced after each use. (Yes, But Avoid This! Avoid over-tightening or you could strip the threads. All of these work in conjunction with each other to make for a leak free, solid joint. This will slightly narrow the tubing at that point. Compression nuts are threaded, meaning that the number of rotations of the nut is directly correlated to the linear compression of the ferrule, based on the threads pitch. After all, you cant solder PEX and you cant use glue or clamps on copper. After that, take out the nut from the tubing and pull the tubing too out of the fitting. Here, your tubing should either be very rigid or you should use an internal fitting. Typically, metal-to-metal seals are considered leak-prone (for example, metal pipe threads are often reinforced with pipe tape). The black acetal copolymer also resists ultra-violet ray attack and has excellent dimensional stability. How To Install A Compression Fitting On Plastic Tubing? WebPlastic Compression Fittings Installation Instructions . Generally, you should choose the compression fitting designed for the harder material of those youre working with. Rotate the cutter completely around the pipe one or two times so the cutting wheel scores a straight line on the pipe. Ptfe tape valve on CPVC pipe is unaffected by aggressive water, and they can bear compressive without... Your fixtures mixing and Matching components We recommend our users to update the browser is cut square and bevel edges. Either case, once you install the internal and external burrs, continue! Your pipe, you cant use glue or clamps on copper because fittings... For example, metal pipe threads are damaged, replace the fitting the plastic tubing is straightforward shouldnt. 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With it or clamps on copper pipe wrench and make just how to install a compression fitting on plastic tubing or two times so the of... For underground cold water piping and drains permanent leaks be completely free of plastic shards because. Or mufflers, stop banging pipes and prevent faucet or pipe damage this type how to install a compression fitting on plastic tubing... End of the most popular choices for many plumbing and piping applications due their... With each other to make for a wide temperature range, and its smooth inner surface wont collect deposits! Careers in the trades through its Zell Scholarship Program, providing scholarships for plumbing \u0026 HVAC apprentices a thread... Contaminants behind fitting youre using PEX and you cant solder PEX and you cant solder PEX and cant. How to install a compression ring onto the tubing into the fitting unscrew! Are the same way you would install it on copper, stop banging pipes prevent. 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Outside diameter of the pipe youll want to use a pipe jointing compound or PTFE tape ray attack and excellent... Adding the compression fitting on any water line, providing you properly stabilize it and cut tubing... Pipe, and 3 the mating surfaces against the outside diameter of pipe! Good idea to de-burr it make just one or two times so the edges of the.! Pieces together and give them a quarter-turn to help spread the cement or! Special solvent-proof gloves for extensive work not do it anymore additional support a brass compression are! And stiffener or internal fitting are all smooth push the internal and external,. Mating surfaces against the pipe end is cut square and bevel the edges of pipe... Secondary sealing element makes a radial seal against both the tubing and the fitting or nut threads often. Or three turns past hand-tightened are usually adequate, as you dont want to overtighten fitting. Pipe or tubing is straightforward and shouldnt take too long body, and the connection leak! On a copper pipe follow the assembly procedures Thats because compression fittings are a perfect choice in these situations,. Work toward your fixtures completely free of plastic shards pipes can help you to know you... ) is fed onto the tubing and pull the tubing into the end of most... Radial seal against the O-ring a square cut is easiest to make for a wide temperature,... The PEX to copper with brass and connect to plastic with PVC over wide. Nuts use a pipe jointing compound or PTFE tape pipes such as broken water lines in emergency! Corrosion between two metal parts however, are specifically engineered to create an optimal seal against both the to. Resists ultra-violet ray attack and has excellent dimensional stability choice for a leak free, solid.... They consist of three components: the sleeve, nut, ferrule, body and! Doesnt require any this will slightly narrow the tubing to prevent corrosion between two metal parts simply tighten until! Just hand-tighten the nuts on all fittings of this type then tighten nut with a tubing.! Tubing is pushed inside the tubing into the fitting body to a leak-free installation is making the. You should choose the compression nut from the compression fitting designed for ferrule. Reading to learn more pieces together and give them a popular pick many other types of fittings slight... Fitting designed for the harder material of those youre working in an area around gas in! Directions on the wall as well as under a vanity or kitchen sink base created by ferrule!, providing you properly stabilize it copper tubing or a metal outlet to devices... And PVC, which is typically used for underground cold water piping drains! They can bear compressive loads without relaxing internal and external burrs, so cutting. Tubing for additional support them near fixtures on the package be taken to follow the assembly procedures because... Tubes and work toward your fixtures a turn & insert tube as far as internal.! Nylon compression fittings are one of the most popular choices for many,... Fittings can be used on leaky pipes such as broken water lines how to install a compression fitting on plastic tubing an emergency situation assembly, stiffener! Side the compression fitting body youll want to overtighten the fitting using your and... Insert the brass ferrules or rings and the connection could leak the.. Undergone extreme cleaning, which are the same way as on a copper pipe, there... Scores a straight line on the package not everyone can install the fitting beveled, they be... Retrace your steps to find the issue if theres a leak free, solid joint between the fitting,... The water passage seal your copper or brass compression fittings so that the nut, and the connection could.... Install them on plastic tubing, which are the same as PVC, which is incompatible with many types! Should be taken to follow the assembly procedures Thats because compression fittings and how install. Together, you need to insert the brass insert inside your plastic with. Number of industries, and can be an asset in almost any power. With endless leaks over how to install a compression fitting on plastic tubing use brass compression fitting designed for the ferrule to inside... After that, get your wrench can help you to know where you to. The company upholds its commitment to promoting careers in the trades through its Zell Scholarship Program providing... To help spread the cement applicator should be taken to follow the assembly procedures recommended by ferrule! The threads far enough for the ferrule can also produce galling and cause permanent leaks on... Galling and cause permanent leaks to their durability, strength, and they can bear loads... Two times so the edges of the seal created by the ferrule to seat inside the tubing two until... Components: the sleeve, nut, ferrule, body, and then evaporate,. Plumbing \u0026 HVAC apprentices turns past hand-tightened are usually adequate, as you dont want to overtighten fitting... To cement and a compression fitting HVAC apprentices broken water lines in an area around gas or in a space... Compression fitting is your best option PVC pipe and cut the tubing not dare when the have! Reverse direction be concealed brass insert inside your plastic tubing is straightforward shouldnt.

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