Maxline M7500 Master Kit, 3/4-Inch x 100-Feet

This is really a great solution for adding compressed air to a shop. It isn't the cheapest way to do it, but the end result is worth it (IMHO). It's a challenge to work with for sure (straightening it is pretty difficult, and long runs can be awkward to maneuver into place - get a helper to assist) but once it's installed it works great.I didn't buy a tubing straightener, just unrolled it and straightened it as well as I could against my belly. That worked well enough to get it installed. Once up, I tweaked out the waves with a couple of "persuaders" that I made from 2x4's The tubing is too stiff to tweak with your hands (my hands anyway) so you'll need some kind of leverage tool (see photo).You can easily bend the tubing 90 degrees (or more - it comes in a coil), which enables you to go around inside corners without the use of an elbow. Saves money and improves air flow. See photos.The fittings are top quality, appear to be nickel plated brass (the terminal blocks are aluminum). They are quite expensive to buy individually but the kit included enough for my installation, I didn't need to buy more. The cutting tool and reamer worked perfectly well, and also served for cutting and reaming PEX tubing in a subsequent job. BTW PEX may be just as good as this stuff for air lines, something to consider - it could be a cheaper solution. However this kit includes pretty much everything you need in one box - tubing, tools, mounting clips, drain valves, and various connectors and terminal blocks. So building a system in PEX might not save all that much in the end.The instructions are clear enough. They recommend both teflon tape and pipe dope on the threaded connections. I'm not sure why (I generally use teflon tape only) but I followed the instructions and the whole system is airtight. So I'm quite pleased.One caution in the instructions is not to pressurize the system too suddenly. Apparently this can weaken (fatigue) the tubing over time. I installed an electric ball valve which opens very slowly, seems ideal.Overall a great product. 5 stars.

I had been having an issue with moisture in my air compressor lines and started doing some research on dryers and line systems. As part of the solution for the moisture, I ended up getting this RapidAir 3/4" 100' kit to get drains all around my shop. Prior to this, I only had one port for connecting the air compressor and was getting water every time I was using my compressor.Well, what a great product! For the money you can't beat it. It took me about 6 hours to install the kit but I was taking my time and wanted to think through where to put the ports. The line is pretty stiff but I was able to get it straight enough for my OCD by bending it and eyeballing the line as I unrolled it. Once it was up, if a spot looked too low or high on the wall I would just push up and adjust it and it stayed in place and it looks great. I did the install by myself so it was definitely something that anyone can do. So far no leaks and I love the new "universal" couplers that I got at Lowes for the ports.

After reading some of the reviews I was wondering how the install was going to go. Pleasantly surprised how easy it was to work with. I did use a conduit bender for the 90s, but not necessary at all, and you'll end up moving it around a bit anyways. Did most of my garage in about 3-4 hours on a Saturday. Once you get it in place it's easy to push on it and straighten it out.I bought two extra bags of clips, a couple of their fittings (for instance I knew I'd need a 90 fitting for a hard turn behind my work bench), and a different block they sell (pictured by the hose reel). Plan accordingly, Amazon is great with returns and you can't just run down to the hardware store to get parts for this system if you get halfway into the install and realize you need something. You don't need to go overboard with the straps/clips either, the pipe is super rigid and light weight, holds itself in place well. All in all, on straight runs, 1 clip every 8 feet is plenty.Was 100% planning on chasing some leaks down on startup, but didn't have any to chase. Haven't noticed any more leak down than I had before with my reel hooked directly to the compressor.Been in for a couple months now, pressurized 150 psi for most of that time, occasionally turned down to 90 for die grinders and what not. Still operating same as it was day one. I've already recommended it to a couple buddies for their shops, for price and ease of install vs copper or iron, it really can't be beat. About the only down side is the exorbitant cost of their fittings, but tbh if you plan well and are willing to deal with the little extra hassle of dealing with long runs (avoiding splices), you won't need many of them.

I work for an engineering firm and a coworker recommended this system to me because it allows you to run air lines much more easily than traditional iron pipe. The kit comes with everything you need to get going. The included tools for cutting and preparing the ends of the tune work well. The 3/4" tube is definitely stiff, so straightening it out is a bit of a challenge, especially if you're on your own. Bending the tube takes a bit of practice, but using a large cylinder, such as a 5 falling bucket, gives fairly consistent bends.If the product has one flaw, it's the provided clips. The clips don't hold on to the tubing well enough. If you have it installed and go to "massage" the tube into position, the parts in the clips pop out. The easiest solution is to buy some 1" ID tube brackets (I used McMaster 11355T27).Once you use better clamps, installation becomes easy. You'll want to follow the directions and use pipe tape and dope on the threaded connections. The compression connections on the tube seem to hold fine. You'll want to have a bench vise and a few adjustable wrenches to thread all the parts together. Once that's done, mount the parts where you want and connect the dots with the tubing.Overall, the tubing is an exceptional value. Although fittings can be a bit more expensive than traditional iron pipe, you'll save a lot of time and frustration. You don't need to hire a plumber to install it or rent a pipe threader for the custom-length sections you'll invariably need. The light weight of the tubing makes solo installation much easier, which is especially helpful for DIY installations.Since the piping is relatively rigid, you'll want to have a flexible hose between it and your compressor for limiting vibration.I still have more tubing to run, but the system makes modification and expansion easy.

I'll be the first to say that I invented many new words while installing this system. It is definitely a two-man job, and although I did it by myself, I wouldn't attempt it again without help.The 3/4" hose is VERY HARD and does not bend easily. It is a pain to route, especially in tight locations. There were numerous times where I wanted to send this back, but thankfully, I powered through the aggravation and now have a totally functional air system!Including the hose cutter is a great touch, especially since the hose is very hard to cut. Great forethought from the company.The fittings are high-quality and extra o-rings are included, I assume for leaks that will likely develop over time. I do have a few small leaks, but my system only loses about 30 PSI per day with the compressor turned off. Some leaks are admittedly coming from a junk air dryer that I installed in-line with this system.You really have to tighten down on these fittings to get them sealed. The manual recommends at least 3/4 turn, which was seemingly impossible for some of the fittings. I'm a fairly strong guy, and I had trouble getting them tight, even using a vise and a long wrench. Either way, I think I've got them cranked down well.The coupler blocks are well made and should last forever. I am tickled with the craftsmanship of the overall kit, as it is obvious that Maxline really took the time to engineer this right.The hose clips that were included are not too helpful without the addition of some zip ties, otherwise, every time you touch the hose it will jump out of the clip.I'm not kidding when I say that this hose is HARD and doesn't like to be bent! It was a challenge to install for sure, but I am happy now that it is done. Highly recommended, but be sure to get some help or else you'll dread the process!

In my other shop, I have the 1/2" Rapid Air system. It served me well for several years. In my new shop, i had been meaning to get the air plumbed-in for almost a year. I was tired of dragging an air hose across the floor.Now, one thing that never occurred to me is why my air tools never seems like they had the oomph that they should. So, I was poking around on Amazon Warehouse Deals and found the 3/4" setup for $145. I figured the additional volume that the 3/4" pipe would offer the the outlets, could make a big difference. That along with learning that there are air fittings with a 3/8" opening, that pass about 2x the volume of air that the typically 1/4" fitting and couplers do.The 100' kit was more than enough to plumb-in three outlets in my large shop. The tubing cutter and reaming tools provided made easy work of attaching the T's and couplings to the outlet blocks. You will need to make rather wide radius bends, and if you're up on a tall ladder installing the lines overhead, it'll help to have someone to assist uncoiling and feeding the pipe to you.I've refitted my air tools with 3/8" Milton P-style (also known as Automotive Interchange or Truflate T-style) coupler snd plugs, along with 3/8' ID air hose. Now my Snap-on impact guns sound like the tire guns at NASCAR. The difference is remarkable.For well under $200, you can't go wrong and if you find this setup on Warehouse Deals, it is a downright bargain.

I am just now wrapping up my install. My compressor is installed in a shed about half way between my two garages. I ran this line underground to both garages and used black pipe for the risers to enter each building. I spent the extra $$$ on their roller-straightening jig and I’m glad that I did. I MIGHT have been able to straighten all 250’ by hand but I probably would have burned a couple of days doing so.I saw some reviews wherein folks complained about the supplied clips not holding the tubing firmly. I had no such problems. I did mount a clip about every 4’ though. Since I used all of one of my 100’ kits underground I had twice the number of hardware pieces for my interior installation.I followed the instructions pretty closely and nothing leaked. This system certainly beats running hard lines like I’ve done “in the olden days.” I would absolutely recommend this product to anyone looking for a solid easy install.

Although I've only had this system installed for a week, I'm tentatively giving it 5 stars. Purely based on other reviews I have some concerns for down the road, but right now everything seems really, really nice. Based on questions people have asked and some other reviews, let me throw some stuff out there:The 3/4" tube is a little cumbersome to uncoil. You can make the machine on rapidair's website or something similar, but I had no problems getting the pipe pretty darned straight. My install consisted of several ~15' runs, the longest was 25'. I had a helper hold one end of the coil and then walked it out, holding it down with my feet as I walked with some really cushy flip flops. The end result was a *really* wide arc that was easy to straighten by hand. It was not a big deal.I measured out each segment, then cut a length of the straightened pipe adding about a 1' for slop & mistakes. I planned so that each segment would only have one angle to avoid frustration. Starting with the longest straight, I connected the pipe to whatever fitting was there (sometimes a tee, sometimes an outlet) and then walked the pipe into the corner, forming it by hand as I went. Once it was roughly in the right place, I installed one of the pipe clips to keep it in place, then laid out the other leg of the run. Aside from the straightening, I laid 90' of this by myself without help. It's not tough.Pro Tip: Read the directions. They are explicit and on-point. All NPT fittings should be wrapped with two wraps of Teflon tape. All NPT fittings should be doped (although I prefer Permatex High Performance Thread Sealant). Build the outlets (plug, M8005 fitting, 50120 drain, and air fitting of your choice) in ADVANCE. Install the outlets IN ADVANCE. No treatment (tape or dope) is required on the Maxline pipe fittings - the O-rings seal them, not the threads. As such, when cutting the pipe, it MUST be STRAIGHT, a perfect 90 degrees, and you must use the reamer to make sure the pipe is round (not ovalled) and properly beveled. Otherwise it may not seal properly on the fittings. Leave some extra when measuring the pipe in case you need to re-cut! If I have any complaints, it's that the cutter they supply is difficult to use - the "mouth" should be 2-3" wide to ensure a good, straight cut. Oh well! Finally, do not try to assemble the M8005 fittings onto the pipe first. They are not swivel fittings. The NPT side of the fitting must be installed first, then install the pipe onto it. When you finally assemble the pipe onto the M8005 (last step!) be sure you tighten the collar at least 3/4 turn.There seems to be some confusion about the three #M81010 outlet blocks that come with this kit. Each outlet has three ports - the top, back, and front part are all 1/2" NPT. The idea is to connect the pipe to the outlet at the TOP or BACK (such as through a wall) and then use the NPT plug to plug whichever one you did not use. Three outlets = three plugs. You could use the other port to "daisy chain" to another outlet, but that would be awkward. The front port is for your tool or a quick-disconnect but, again, could be used to daisy chain. I used Dixon Valve DC2504 (from Amazon) as they are 1/2" NPT -> 3/8" (industrial-style, there is an automotive style equivalent) quick disconnect, so no adapters needed. You can use Dixon Valve DCP2103 on your tool - it's a matching 3/8" quick disconnect with a 1/4" NPT. Easy! The bottom port is 3/8" NPT and is *intended* to house the drain valve. This makes it easy to depressurize the pipe system and drain water that *will* accumulate in the outlet. You *can* use this port to daisy chain or connect tools, but it's *supposed* to be a water drain. Three #50120 are included with this kit for this purpose!I ordered an extra tee (#M8011) with this kit with two purposes in mind: It broke up what would have been a very long (40'), very cumbersome run of tube *and* provided a space to mount an overhead hose reel. Plugging in and storing a hose would have been annoying, so I just installed an overhead reel permanently. #M8005 goes straight from the 3/4" pipe to a 1/2" NPT thread. I picked up a 1/2" NPT shutoff valve (in case I need to remove the hose for some reason, and so the hose doesn't have to hold 90psi all the time) but no quick disconnect to remove a restriction point. The hose connects directly to the shutoff valve. Easy! (Remember, assemble backwards - reel to shutoff valve, shutoff valve to M8005 fitting, *then* M8005 to pipe!)My final install looks like: Big ol' 80 gallon compressor -> shutoff valve -> flexible jumper (ALWAYS CRITICAL) -> PneumaticPlus SAU4020M-N06BG (filter/regulator) @ 100psi -> pipe system. The pipe system has essentially four legs - one goes from the garage into the shop (through a wall), one goes to two outlets on opposite sides of the garage, one goes to the second shutoff valve & overhead reel, and one goes to an outlet on the back wall, incorporating a SECOND regulator/filter for paint.I'm really happy with this, and really happy I dragged my feet on this purchase for years. Rapidair has a complete setup here, with all the parts & pieces you need to fully customize your solution. Six days later I have seen no leaks anywhere - and I'm literally itching to use my bigger air tools! :) I have yet to see whether the pipe will take a hit (it's on walls and in rafters, so hopefully it won't have to!) and what happens over time... until then, 5 stars!

I was a little suspicious when I initially ordered, but seemed like a better way to go than piecing together black pipe or rubber lines. Wasn't disappointed at all, stuffs awesome.The lines themselves are weirdly rigid while being easily formed to take turns or go around obstacles. I had one large 25 foot run behind conduits and other stuff on the wall I was worried about, simply cut the length I needed and pulled/pushed the line through in all of 2 minutes.The fittings are solid, machined aluminum with brass plugs and a drain spout. I'd rate the machining as consumer grade, there are areas where edges are milled down right beside edges that aren't. Mind the utility parts are great, threads are clean and there's no burrs or anything I needed to take care of ahead of time.Seems most people wind up with more line than fittings, which is smart for the company and easily solved by the consumer (I'll be it at a cost, the fittings are expensive). But the fittings it comes with are enough to get you started, and the quality and convenience of everything included makes up for having one less fitting than you'd want.

Very easy to install when it's warm. The fittings were easy to install and doesn't leak air.

Easy to install

I’m still installing, but stuff is pretty good, not at all disappointed, especially for the price/value. One thing to note is that the o-ring seals on the steel fittings are thin, and a couple were torn before I started, these guys are thinner than anything in my o-ring kit, so of course a bit tricky to replace. If you buy, just match up a couple o-rings, you’ll likely need them.

Great kit easy to install, worth the money