Review: 76 Projects Hi Flow No Clog Tubeless Valves are Legit

76 Projects were first to market with a new Hi Flow No Clog Tubeless Valve, though we only caught wind of it after release of the Reserve Fillmore, another tubeless valve with the “Hi Flow No Clog” tagline. The 76 Projects offering is, by some margin, the more affordable of the two, retailing at £24.50 ($29 USD) for the pair. It’s available in three different length options for rims of varying depths, and each set comes with a bunch of spacers so you can tailor it to your specific rim depth.

76 projects hi flow no clog tubeless valve review

Credit: Blair Kemp

The classic Presta Valve, though sufficient for tubeless setups, isn’t ideal. They have a tendency to clog up with sealant, making post-burp sealant refills and post-puncture re-inflation a bit of a pain. A blockage can also make it difficult to unscrew the Presta head, not ideal when you want to perform a quick check of your tire pressures before heading out. The blockages can be dealt with by removing the valve core and cleaning out the offending sealant, but that takes time. We all want to spend more time riding our bikes, not maintaining them.

The 76 Projects Hi Flow No Clog Tubeless Valve seeks to solve this problem with a design said to eliminate the possibility of clogging. The higher volume shaft should be less vulnerable to clogging, and it is also said to permit 4X the airflow of a Presta Valve – without the need to remove the core. We got a set in for testing to see if the claims hold up to reality.

Review: 76 Projects Hi Flow No Clog Tubeless Valve

76 projects hi flow no clog tubeless valve review all component parts

I initially installed the 76 Projects Hi Flow No Clog tubeless valve on a Nukeproof Horizon V2 Wheel with a Maxxis Minion DHRII tire. Orange Seal is my go-to choice of tubeless sealant – that and WTB’s TCS tubeless sealant were used while testing out this new Hi Flow valve.

With eight different component parts to each valve, it did at first seem overly complex to fit. As the valve stem itself is wider than a regular Presta valve stem, it doesn’t actually fit through the rim’s valve hole. That’s why the valve has a removable base nut; to install, you have to push the valve stem through the rim from the outside (opposite to normal), then push the base seal onto the shaft, and then thread the base nut onto the threaded end.

spacers for 76 projects hi flow no clog tubeless valve varying shapes suit different rim shapes

Varying shapes of spacer are provided, but the flat ones worked best for my set up on both the Nukeproof Horizon V2 rim and the Hunt Enduro Wide V2 rim

Before you push the valve stem through the rim, you need to select the appropriate spacer to slide onto the stem – included is a host of spacers, including flat ones, rounded ones, and half-rounded ones that could work well if you have an asymmetric rim profile. Don’t forget the o-ring and lock ring, too.

The risk here is that, if your rim tape doesn’t already have a clean cut hole in it, the action of pushing the valve stem through could cause it to tear. That said, if you are able to pre-cut the tape at the valve hole before carefully pushing the valve through it, it shouldn’t be a problem. In this case, we had no trouble at all. Even if the tape did tear ever so slightly, the sealant shouldn’t really have any problems dealing with that.

76 projects hi flow no clog tubeless valve review valve core hollow

At the top of the valve, underneath the push-on rubber cap, you’ll find the valve core. It is made from stainless steel, and it’s hollow. It is through the hollow center of the core that air flows (and sealant can be injected). A small brass nut threads onto the hollow core locking the whole assembly into position – it pulls the valve core up the valve stem, cinching the internal seal into place to close the lumen. See here for cutaway images of the valve’s internals.

Honestly, installation of the 76 Project Tubeless Valve was considerably more fiddly than that of a regular Presta valve, mainly due to there being so many more tiny parts to lose! The little brass nut would so easy to lose, but really you should only have that off completely when injecting sealant through the core. Topping up was easy enough with Stan’s The Injector  – just push the rubber pipping directly over the valve to form a tight seal before injecting it through.

How easy was tire seating with the 76 Projects Hi Flow No Clog Tubeless Valve?

Very! Seating a 27.5″ x 2.4″ Continental Kryptotal Fr onto a Hunt Enduro Wide V2 rim was a doddle. I took 23 seconds of working away on the Topeak Joeblow Sport Pump to hear the satisfying pops of the bead seating on the rim. I back-to-back tested the same combo with a regular Presta Valve with the valve core installed – inflation took 33 seconds. Granted, it’s not super scientific, but from the first few pumps I could tell that inflation was going to be faster with the 76 Projects Valve.

The bigger difference was seen in the deflation time. From 25 PSI, it took just 12 seconds to deflate the aforementioned tire, as opposed to the 50 seconds it took to deflate it via the Presta Valve.

76 projects tubeless valve hi flow easy tire seating with track pump

Given that I was able to easily inflate the tire with a regular Presta Valve without needing to remove the valve core, one could argue that the 76 Projects Valve is trying to solve a problem that doesn’t really exist. However, that easy inflation isn’t always the case – on some occasions I have had to remove the valve core, and sometimes I have even had to call on the services of the AirShot. Regardless, it was the No Clog feature of the valve that captured my interest. Which brings me to…

Did the 76 Projects Tubeless Valve clog up?

76 projects tubeless valve test review sealant clog

Nope! During the 3-4 month test period, I had three Presta Tubeless Valves clog up on me, but the 76 Projects Hi Flow No Clog remained blockage-free. That’s despite having injected Orange Seal through the core on one occasion. Very pleasing.

76 projects tubeless valve test review sealant clog in base nut

I switched the valve onto a new rim-tire combo half way through testing. Removing the tire from the rim, it did look as though the valve would be blocked as some sealant had coagulated inside the base nut, but it wasn’t enough to block the air flow – the valve was still functioning perfectly.

76 projects tubeless valve hi flow no clog with topeak smartgauge d2 digital reader

The valve is compatible with digital pressure gauges – I tried it with the Topeak Smartgauge D2, specifically, set to the Presta setting. The valve only works with push-on lever-locking pumps. If you have a screw-on hand pump, you’ll need to order an adapter at check out for an extra £4.

76 projects hi flow no clog tubless valve bent

The latest batch of the 76 Projects Hi Flow No Clog Tubeless Valve has 10mm more thread which is said to strengthen the shaft and reduces the chances of bending as well as requiring fewer spacers.

Unfortunately, the valve stem is a little bent after its 3-4 months of service. I can’t tell you when that happened, but I am pleased that the slight kink hasn’t compromised the function of the valve. Whatever the impact was, its force wasn’t sufficient to snap the valve stem entirely.

I did try the 76 Projects Valve with a MegaNorris Sandwich tire insert, and found the two to be perfectly compatible. That said, it is by no means the tightest fitting tire insert. Tighter, more voluminous ones like the Nukeproof ARD and CushCore may have been the more suitable challenge for the valve’s compatibility. However, judging by the considerable size of the holes on the aluminum base nut, I see no reason to believe it wouldn’t work with any tire insert out there.

Pricing & Availability

The 76 Projects Hi Flow No Clog Tubeless Valves retail at £24.50 ($29 USD) per pair, and are in stock now. Pick them up in Black or Magenta. There are three sizes available to fit differing rim depths:

  • 15mm-35mm
  • 30mm-50mm
  • 45mm-65mm

Note that if you carry a screw-on pump in your riding pack, you’ll need to pick up the adapter for that at the check out; it’s an extra £4.

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8 days ago

I have them on my fat bike for a while, I did have the valve nut get stuck and had to use a needle nose pliers to loosen it. Was a while ago and they do look good on the wheels. It got stuck a while ago and has been fine since. Would I buy again? Yes!

7 days ago

Have a pair on my XC MTB wheels.
If I ever go tubeless on my road wheels, I’d pick this up also.

Eugene C
Eugene C
6 days ago

I have the competing Fillmore valves on my road bike and they’re a game changer. Even just the action of pumping up the tire is easier. Tubeless sealant basically never makes it into the valve body, and any that does is forcefully ejected by a powerful rush of air.

6 days ago

Anyone know If it works with cushcore?

6 days ago

Can’t you just put sealant into the tire by removing part of the tire from the bead and dumping it in?

The KOM Hunter
2 days ago
Reply to  Tim

But that’s free.

5 days ago

Do these take a standard presta core?

The KOM Hunter
2 days ago
Reply to  Falllinemaniac

But that’s free.

4 days ago

Tried these and was not very impressed. Your finger covers the hole when releasing air and they don’t work with all pumps. The nut is worse to fiddle with than the presta. I can say I would never buy them again

1 day ago

I have the Reserve Fillmore valves on our road and gravel bikes and I will agree, they are a game changer. We run Orange Seal Endurance and I was having clean out MucOff’s V2 valves about every 3 or so weeks due to clogging. The Fillmore are pretty easy but can be problematic to check tire pressure and the Hrio pump head on our Silca pump can be finicky with these valves. For those reasons, I ordered a pair of the 76 Project valves for road use in black but note that the base nuts supplied with these valves are simply open ended as opposed to vented, and each valve has only a single spacer (half-round) as opposed to the selection pictured above.