Are you trying to find compression union straights among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling compression union straights on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 29 hours of research and did 33 compression union straights tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best compression union straights you can buy today
- PREMIUM MATERIAL:Our Brass Compression Tube Fittings are made of high quality CA360 brass, with corrosion resistance, high temperature ductility and low permeability. Great for long time use, dot compression tube fitting assortment pneumatic fittings type: 3/8"
- TYPICAL APPLICATION:The brass compression fittings for nylon tubing can be used with air systems, copper tubing in air lines brake systems, which is perfect for automotive car or truck repair or trailers daily parts replacement, air operated seats, operating gauges, air horns, heater controls, industrial workshops, daily garden or lawn mower repair, towing machine hose connection and air brake connections
- EASY TO BE INSTALLED:The compression tubing sleeve connect two tube with same OD. Take out the outer sleeve and insert the nylon tube in, fasten the outer sleeve into the main body again. Make sure the small inside sleeve is kept together with the hose
- MAX PRESSURE: Working pressure from vacuum to 250 psi. Temperature Range: -40° F to +200° F（-40°C to +93°C）(Note: see tubing manufacturer’s recommendations for pressure and temperature mutations)
- PACKAGE INCLUDES:You will receive 4 pcs 3/8" Tube OD Brass Compression Tube Fitting, which can meet your needs of use and replacement, and you can also share them with others
- 【Material】: Heavy Duty Brass, strong and durable. Size: 1/4" Tube OD x 1/8" inch NPT Male Adapter
- 【Firm And Durable】: Litorange Brass for corrosion resistance, high temperature ductility and low magnetic permeability
- 【Function】: Fitting connects to tubing on one end and has an NPT male connector on the other. Use with copper, brass, aluminum, or plastic tubing
- 【Tips】: Single ferrule compression fitting has fewer possible leak paths than twin ferrule fittings. Primary uses water, gasoline, oil and vacuum lines
- 【Package Include】: 4 PCS 1/4" Tube OD x 1/8" NPT Male connector
- STRAIGHT UNION KIT: The dot air compression union fittings kit package includes 53pcs : 4 pcs 1/8" x 1/8" compression tube union, 6 pcs 1/4" x 1/4" compression tube union,6 pcs 3/8" x 3/8" compression tube union,2 pcs 1/2" x 1/2" compression tube union,1 pc 5/8" x 5/8" compression tube union,34pcs sleeves ferrules,1pc 4m teflon tape
- PREMIUM MATERIAL: Our DOT dot air compression union fittings kit is made of high-quality CA360 brass, Meet D.O.T FMVSS 571.106, Air Brake system Requirements, with corrosion resistance, high-temperature ductility, and low permeability. Great for long-time use, dot union fitting type: 1/8",1/4",3/8",1/2",5/8"
- PRESSURE RANGE: Air line fittings pressure resistance, not easy to trip. Air brake fittings working pressure from vacuum max to 300 PSI. Temperature Range: -65° F to +200° F(Note: see tubing manufacturer’s recommendations for pressure and temperature mutations)
- EASY TO INSTALL: Our dot air compression union fittings kit quicks disconnect push tubing in, you need to use tools to fix loose parts to handle in tight places so that use will be firmer and not easy to fall off. And wrapped the additional teflon tape we presented to make the connection closer, thereby extending the service life
- TYPICAL APPLICATION: Air brake fittings assortment kit can be used with air systems, copper tubing in airline brake systems, which is perfect for automotive car or truck repair, air operated seats, operating gauges, air horns, industrial workshops, air brake connections, towing machine hose connection and air brake connections or lawn mower repair
- 【Easy to Install】: MuHize compression fitting is much easier than replacing, bending, and flaring new lines. Compression fittings for copper pipe are easy to disassemble no flaring tool is required. Just make sure the cuts to the original lines are clean and these will outlast the rest of the line with no leaks.
- 【Rust-Proof Reliability】: MuHize brass compression union fitting is built to last, protecting your brake lines from corrosion in harsh conditions.
- 【Versatile Compatibility】: This high-quality brass union works seamlessly with copper, brass, aluminum, or plastic tubing, suitable for most automotive applications.
- 【Size & Package Includes】: 3/8" Tube OD x 3/8" Tube OD. MuHize compression Tube Fitting mainly consists of a fitting body with a 24-degree tapered hole, a ferrule with a sharp inner edge, and a nut for compression(pack of 2).
- 【Working Principle】: MuHize compression Tube Fitting is to compress the ferrule by thread interlocking, and the two ends of the inner diameter of the ferrule tightly wrap the tube due to radial shrinkage, which plays a sealing role and realizes the sealing and tightening effect between the joint and the tube.
- 【Package Includes】: 6 PCS 3/8" OD x 3/8" OD Brass Compression Union; 1 PCS Sealing Tape.
- 【Easy Installation】: Easy disassembly without flaring tools, only need to unscrew the nut and sleeve, insert the compression coupling and tighten it successively.
- 【Better Sealing】: Precision thread, smooth surface, the threads are tighter, deeper, and smoother than regular products, and a sealing tape is included for further enhancing sealing performance.
- 【Superior Material】: Solid brass construction offers wear/corrosion resistance, high ductility, strength, and low permeability for a long service life. Lead-free brass guarantees the safety and health of your family.
- 【Wide Application】: Compatible with copper, brass, aluminum, or plastic pipe tubing line, the compression connector is ideally suited for pipeline systems carrying Water/Fuel/Oil(Lquid),Air/Vacuum(Gas).
- 1/8-Inch OD Compression Union
- ✅ PRODUCT SIZE - 1/8" Tube OD x 1/8" Tube OD. Constructed by 2 compressor nuts, 2 compressor rings and body. Easy to disassemble and no flaring tool required.
- ✅ HIGH QUALITY BRASS - This compression tube fittings is made of high quality brass, which offering perfect corrosion resistance, compressive strength, high temperature ductility and low magnetic permeability. The thickened body with strong physical properties makes it durable. This 1/8" Tube OD x 1/8" Tube OD compression tube fittings have reliable quality and long service life.
- ✅ MULTIPLE APPLICATIONS - This 1/8" Tube OD x 1/8" Tube OD compression union connectors are applicable to pipeline systems of oil, natural gas, water and other non-corrosive substances. Compression union connectors can be used repeatedly.
- ✅ MAXIMUM WORKING PRESSURE & WORKING TEMPERATURE RANGE - Maximum working pressure up to 1200 PSI , temperature range from -65°F to 250°F (-53°C ~ 121°C).
- ✅ OPERATING PRINCIPLES - These compression tube fitting are to compress the ferrule by thread interlocking, and both ends of the inner diameter of the ferrule tightly wrap the tube due to radial shrinkage, which plays a sealing role and realizes the sealing and tightening effect between the joint and the tube.
- 🛒Material: Made of high-quality brass, high temperature resistance, corrosion resistance and oil resistance, long service life
- 🛒Size: 6PCS 1/2" Tube OD x 1/2" Tube OD Connector
- 🛒Maximum working pressure: 150Psi (1Mpa), Temperature range: -65℉ to +250℉(-53°C to +121°C)
- 🛒Easy installation: Easy installation only need to unscrew the nut and clamp ring, insert the pipe fitting and tighten it successively
- 🛒Teflon tape: Teflon tape used to wrap pipe threads has a sealing feature that prevents water or air leakage
- Fitment: Used for connecting copper, rigid and semi-rigid plastic tubes
- Material: Crafted from stainless steel 304, ensuring durability, strength, and resistance to corrosion for long-lasting performance
- Double Ferrule: Features a double ferrule system for a secure and reliable connection, enhancing the fitting's stability and leak resistance
- Heavy-Duty Construction: Built to withstand demanding applications, this compression tube fitting union is designed to handle high pressure environments with a nominal pressure rating of 16Mpa/2900psi
- Strict Engineering: Each component is meticulously engineered to accurate specifications, ensuring a tight and leak-free connection between 1/2" OD tubing
- Specification: Color: Gold Tone; Material: Brass; Thread Size: 1/8 BSP; Fit Tube OD: 4mm / 0.16 inch; Total Length: 23.6mm / 0.93 inch; Package List: 3Pcs x Brass Compression Fitting
- Advantage: Made of brass material, it is ductile at high temperatures, resistant to corrosion, and high pressure, strong and durable, good sealing and can be used in many different types of environments. Fittings are easy to assemble without the need for welding, flaring, or deburring and can be connected directly to copper, brass, aluminum, or plastic tubing.
- Application: Brass compression fitting is usually used to connect air, water, and oil pipelines quickly and simply; Suitable for connecting and fixing nylon pipes, copper pipes, aluminum pipe joints, etc.
- Instruction: Keep the pipe extended in place and tighten the joint. After you feel it is tightened to the bottom, slowly tighten it one turn (it is the process of achieving sealing).
- NOTE: Please confirm the size before purchasing it.
- Reducing union fitting for connecting and disconnecting two tubes with different diameters
- 1/2" tube OD connection on one end and 3/8" tube OD on the other.
- 304 stainless steel for higher strength and greater corrosion resistance.
- Operating temperatures: below 450℃/ Working pressure: 25Mpa-40Mpa.
- Applicable medium: oil, water, gas and other non-corrosive or corrosive medium.
- SOLID BRASS: Quality brass for corrosion resistance, high temperature ductility and low magnetic permeability. Dual couplings for joining two tubes of the same diameter.
- FUNCTION: Compression union for connecting two 1/4 inch compression fitting tubes together. Connecting and disconnecting two tubes more easily than with a coupling.
- THREE PIECE CONSTRUCTION: Nut, sleeve and body with attached insert use with copper, brass, aluminum, or plastic tubing
- WIDELY APPLICATION: Good sealing and repeatability, temperature and pressure resistance. Applied in the Fuel, Air, Liquid, Oil, Gas, Vacuum, refrigerator water Lines.
- PACKAGE QUANTITY: 10Pack 1/4" x 1/4" Brass Tubing Compression Fittings Union Adapters.
- PREMIUM SOLID BRASS- 1/4" brass compression fittings kit is made of high-quality brass, with strong wear，corrosion resistance, high compressive strength, durability, low magnetic
- YOU WILL GET- 1/4 in compression fittings contains: 1/4" OD Straight union-4 pcs, 1/4" OD X 1/4" NPT Straight male-4 pcs, 1/4" OD X 1/4" NP 90° Elbow male-4 pcs,1/4" OD Tube tee-4 pcs, 1/4" OD Sleeves ferrules-20 pcs,and Thread seal tape-2 pcs.Total 38 pcs Brass Compression Fittings
- WORKING PRESSURE & TEMPERATURE - The maximum working pressure of compression tube fitting repair is up to 2000PSI , temperature range -65°F to +250°F (-53°C to +121°C)
- WIDELY USE - Brass compression tube fittings meet specifications and standards of ASA, ASME asn SAE. Good sealing and repeatability, temperature and pressure resistance. Perfect fit for oil, gas, water and other non-corrosive or corrosive pipeline systems, no need for welding and flaring tools, easy disassembly, installation and maintenance, etc
- TIPS- These brass compression fittings 1/4" contain lead and are not allowed by federal law to be installed for potable water use in the U.S.A. and its territories
- 【Material】: Heavy Duty Brass,strong and durable. Dual couplings for joining two tubes of the same diameter(OD: Outer Diameter)
- 【Firm And Durable】: Litorange Brass for corrosion resistance, high temperature ductility and low magnetic permeability
- 【Function】: Union for connecting and disconnecting two tubes more easily than with a coupling
- 【Tips】: For low to medium pressure operating environments with no excessive vibration or tube movement. Use with copper, brass, aluminum, or plastic tubing
- 【Package Include】: 3 PCS 3/8" x 1/4" Tube OD. (include nuts and ferrules)
- Kit contains 6sizes: 1/8"(2 pcs), 3/16"(10 pcs), 1/4"(4 pcs), 5/16"(2 pcs), 3/8"(2 pcs) and 1/2" (2 pcs)compression coupling, total 22pcs.
- Each assortment contains a specific collection of fast moving fittings that should be kept on hand when working with automotive hydraulic braking systems.
- This compression union assortments are designed for specialty and general repair shops.
- Meets specifications and standards of ASA, ASME asn SAE.
- Compression unions for joining copper, brass, or aluminum tubing in low-pressure applications
- You Will Get- 10 pcs 3/8" OD x 3/8" NPT Male Compression brass tube fittings, 10 pcs 3/8" OD Compression Sleeves Ferrules. NPT thread is the nominal pipe size and does not represent the actual diameter, please refer to the dimension drawing for specific diameter
- High Quality Brass - Our 3/8" compression fitting kit is made of high-quality brass, with strong wear，corrosion resistance, high compressive strength, durability, low magnetic permeability and high temperature ductility
- Widely Use- Brass compression tube fittings meet specifications and standards of ASA, ASME asn SAE. Good sealing and repeatability, temperature and pressure resistance. Perfect fit for oil, gas, water and other non-corrosive or corrosive pipeline systems, no need for welding and flaring tools, easy disassembly, installation and maintenance, etc
- WORKING PRESSURE & TEMPERATURE - 2000 PSI maximum working pressure, temperature range -65°F to +250°F (-53°C to +121°C)
- Tips- These copper tubing fittings contain lead and are not allowed by federal law to be installed for potable water use in the U.S.A. and its territories
- PREMIUM DOT FITTINGS: DOT air hose fittings are made of high-quality CA360 brass, meet D.O.T. FMVSS 571.106 approved, SAE J1131 air brake system requirements, with corrosion resistance, high-temperature ductility, low permeability and long service life
- DOT APPROVED HOSE: The 1/4" air line made of high-quality PA12 Polyamide, meets DOT Standards and SAE J844 air brake system requirements. Working Pressure Of 1mpa (145 Psi) And A Max Pressure 450 Psi. Working Temperature: -40 ℃+120 ℃. Provide highly flexible, excellent resistance to wear and Impact
- PUSH TO CONNECT FITTINGS: The compression tubing sleeve connect two tube with same OD. Take out the outer sleeve and insert the nylon tube in, fasten the outer sleeve into the main body again. Make sure the small inside sleeve is kept together with the hose
- HIGH-STRENGTH AIR HOSE: HASAOMOI reinforced pneumatic tubing has high impact and wear resistance, can withstand higher working pressure, and has a longer service life. At the same time, it has a certain degree of flexibility and can be easily bent to a certain extent without affecting normal use
- WORKING PRESSURE & TEMPERATURE: The DOT brass fittings and DOT air lines can be operated in pressures from vacuum to 500 PSI and in temperatures from -40°F to +250°F (-40°C to +120°C)
- WIDE APPLICATION: The air hose & DOT fittings kit can be used for air suspension systems, perfect for semi truck / trailer / RV repair air line leak, also ideal for industrial workshops, daily garden or lawn mower repair, towing machine hose connection, etc
- YOU WILL GET: 32.8FT 1/4" dot air hose line kit package includes 22 pcs: 2 pcs 1/4" brass push in union connectors, 2 pcs 1/4" brass straight union connectors, 1 pc 1/4" brass tube tee, 2 pcs 1/4" brass straight push with 1/4" NPT thread, 2 pcs 1/4" brass straight push with 1/8" 1pc 1/4" OD x1/8"NPT thread 90°elbows, 1pc 1/4" OD x1/4"NPT thread 90°elbows, 1 pcs 1/4" inflation Schrader valves, 10pcs sleeves ferrules, 1 pc tube cutter, 1 pc Teflon tape
- 【Compatibility】 Fit 1/4" Tube OD x 1/4" Tube OD.This high-quality brass union works seamlessly with copper, brass, aluminum, or plastic tubing, suitable for most Industrial Use or Trucks Trailers.
- 【Replacement】Brass compression fitting is much easier than replacing, bending, and flaring new lines. Compression fittings for copper pipe are easy to disassemble no flaring tool is required. Just make sure the cuts to the original lines are clean and these will outlast the rest of the line with no leaks.
- 【Function】Brass compression Tube Fitting is to compress the ferrule by thread interlocking, and the two ends of the inner diameter of the ferrule tightly wrap the tube due to radial shrinkage, which plays a sealing role and realizes the sealing and tightening effect between the joint and the tube.
- 【Material】Brass compression union fitting is built to last, protecting your brake lines from corrosion in harsh conditions.
- 【Package Includes】 Constructed by 2 compressor nuts, 2 compressor rings and body. Easy to disassemble and no flaring tool required(pack of 2).
- Fully certified to ASTM F1387 standards. Double ferrule compression tube fitting connecting to fractional tubing. Interchangeable with other major brands including Swagelok and Parker A-Lok.
- Manufactured from high-grade 316 stainless steel for superior mechanical strength and resistance to corrosion.
- Precision machining of components guarantees optimal deformation of ferrules and tubing, providing leak-tight and vibration-resistant connections even in harsh or stressful applications.
- Hardened threads with a smooth surface finish prevent galling and extend the service life. Nut threads are silver-plated to minimize friction against the body threads. Easy to disconnect and retighten.
- Every FITOK fitting is engraved with details including connection size and type, brand name, material, and heat number, ensuring proper identification, traceability, and quality control.
- Three piece construction - nut, sleeve and body with attached insert Use with copper, brass, aluminum, or plastic tubing
- High Pressure Resistance,Temperature Resistance
- Sealability and good repeatability,Easy to disassemble no flaring tool required
- Installation and maintenance convenient
- Safe and reliable,Lead free brass construction,Lead free approved product in all states
How to choose a good compression union straights
Does the idea of finding a fantastic compression union straights make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in compression union straights. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top compression union straights products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top compression union straights on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top compression union straights brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top compression union straights based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the compression union straights were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good compression union straights, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your compression union straights.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting compression union straights for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our compression union straights. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what compression union straights should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on compression union straights.
