No it's the fitting only

That piece is designed to screw into the regulator. Just wrap it with plumbers tape two or three times and thread into the regulator. Be careful not to over tighten.

There is no "nut". It simply screws into a 1/4-in female NPT fitting like most CO2 distribution manifolds used inside keezers.

I tried this and it didn't work. The thermowell is just slightly to big to go through that bulkhead. I git the 23.6 inch thermowell with bulkhead for fermzilla.

This is what I used to install the thermowell in my kegmenter. I did make a slight grove in the thermowell with tubing cutters to keep it from pushing out under pressurized fermentations. It worked fine for me.

Might work as but its not a true Bulkhead fitting which would have the backing plate and seal with nut.....Instead I'd Go here Canuck home brew supply as they have bulkheads and more... Hope this helps with your project. David

The duotight fitting is not a bulkhead. It’s intended to be used with EVA Barrier tuning for liquid or gas lines. You could look at MT385 “ Plastic Bulkhead for Temperature Probe”. That might meet your needs

That’s my same question.

These probably will not work for what you're aiming to do. Sometimes you can use BSPP threads on NPT fittings but since these are plastic you run a big risk of breaking the plastic threads and not getting a tight connection.

The fitting won’t have any issue with it for degradation but there is a minor concern with it for design. First the threads are not directly compatible. You’ll need a reducer bushing threaded 1/2” male NPT on the outside and 1/4” female NPT on the inside. Plastic recommended get some good pipe tape like Blue Monster. Use three wraps and be careful not to cross-thread it. The Duotight fitting is BSP not NPT though they are theoretically compatible. As it is a straight thread instead of a taper the rubber sealing gasket at the base provides the seal instead of the interface of the tapered pipe threads. You may need a small amount of pipe tape but try it without first you may get a good seal on your first shot. Good luck I’m really happy with these Duotight fittings and am gradually getting rid of everything else.

I tried this on my dual Tap-Right regulator and it did NOT work. I removed the 5/16" brass barbed end keeping the brass on/off lever in place on the regulator. The fitting began to thread in but bound up before fully seating and didn't thread in enough to get the O-ring compressed. I tested and they leaked. So against my instincts I tried tightening to compress the O-ring and they stripped. I believe the question states the problem correctly the threads are not the same. I mentioned brass above because I've seen pictures that seem to show a different type of on/off lever body on the tap-rights maybe those have a compatible thread type.

Ive been using a couple of them for a while now they seem to be sealing properly there is an o-ring at the base of the threads that makes the seal. Will say I’m sad I built my entire keezer with conventional hose and connections before finding this system if I was starting from scratch I would use these exclusively I’m tremendously happy with the versatility and cost.

The thread on this fitting is 1/4" BSP and NOT the same as the -5 straight thread O-ring fitting used on the outlet of the TapRight shut-off valve. This fitting will screw into the 1/2"-20 female thread on the valve outlet but is too long to compress the o-ring and seal. I tried cutting off some of the male BSP fitting with limited success.