Home > Equipment > Keg, Pot, Cooler Parts > Thermometers >

Thermowell - TW18-L-Bare
Thermowell - TW18-L-Bare

Our Price: $12.00

Quantity in Stock:71

Product Code: TW18-L-BARE

This particular thermowell is 18" long with no fittings welded on. The interior of the tube will accept up to 1/4" probes.

Thermowells are devices that install into your vessels (or within your threaded plumbing) that allow a thermometer, digital thermometer probe, or temperature controller sensor to be inserted but kept isolated from the liquid the thermowell is immersed in.

We've sold hundreds of the probe compression fittings for doing a similar thing, but several customers asked us for a version that would allow the removal of the probe without losing the liquid in the vessel. This is also important if you're using a temp probe that is not already waterproof or made of food grade materials. You can get these in either 1/4" or 1/2" NPT, to support probe sizes up to 3/16" OD or up to 1/4" OD and all combinations are available to install weldlessly.

How do these differ from other thermowells" For one thing, they're less expensive because we shaved down the threaded fitting end to use less material. All the traditional thermowells have female threads on the insertion end assuming the use of a bimetal thermometer. Our thermowells are designed for thermometers, probes, etc.. that do not have threads on them.

Also, while this isn't a critical design feature, our NPT threads are machined a bit undersized so they thread all the way in to female fittings such as a tee for a more compact look. Because of this, you can either use teflon tape to seal the threads to a female fitting or you can use a gasket or oring instead. This makes it very easy to turn these into weldless assemblies without extra bulkheads (more on this below). These are all constructed of 304 stainless steel. The well tubing is thin wall for better heat transfer, has a smooth rounded closure at one end and is laser welded to the fitting on the other end. The well tubing also protrudes out of the hex side by about 1/4 inch.

As explained above, the larger well tubing (designated in the model number with an "L") will accept up to a 1/4" OD probe which is very common with temp controllers such as the Johnson Controls A419 series or the similar Ranco ETC-111 series as well as the ST1000 controllers. (we're not endorsing either of them, just using as examples). These units usually include a 1/4" OD probe with a stainless sleeve, but it's not long enough to insert into any vessel on its own. The large sleeve wells are available with either 1/2" NPT or 1/4" NPT threads as shown on the top of the picture to the left.

The smaller well tubing (designated in the model number with an "S") is 1/4" OD and will accept probes up to 3/16" OD. This size is best used for narrow probes found on the popular DTQ450, DTTC, Thermapen, and any other kitchen style digital thermometer. The smaller sleeve units are also available with either 1/2" or 1/4" NPT threads.

NEW Reversed-Bushing Version! Several customers asked if we could flip the bushing around on the tube so that these could thread into a welded coupling from the inside of the vessel for less thread exposure. This would be important on cold-side operations such as fermenters especially and it would also be easier to clean in the case of mash tuns as well. Note, this design also works nicely with the "make weldless" parts available as accessories. The only thing on the inside of your vessel will be the tube, the hex of the bushing, and the gasket. We've also recently made 10" and 18" long versions of these to be used in your tall fermenters such as conicals and the SS BrewBucket. Don't forget, if you want to install them in the lid of your fermenters, you'll want to add the thermowell make weldless parts below (the thermowells do not include them)

Decoding the model numbers, cuz there are so many of them, and it's confusing.... ;-)

TW (length in inches) - (tube size "S" or "L") - (threaded bushing thread size 1/2" or 1/4" NPT) - (R = Reversed bushing)

The last units we have is a bare tube sleeves. They sealed in the same way as the others on one end and is open on the other. The primary application for this unit is to retrofit any of the previous probe compression fittings you purchase or have purchased from us. You can buy this if you have some custom design idea but don't have way to seal the end. The model numbers are more simple and do not follow the formula above.

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 5 Click Here to Write a Review »

  0 of 0 people found the following review helpful:
5 of 5 Great thermowell August 14, 2017
Reviewer: Christopher T. from Dexter, MI United States  
These thermowells are great, ends are smooth and we'll sealed. Much better than the crimped end kinds.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Good quality April 18, 2017
Reviewer: Anonymous Person from Vista, CA United States  
Nice product, quick easy ordering & shipping

Was this review helpful to you?

  1 of 1 people found the following review helpful:
5 of 5 Works perfect February 24, 2017
Reviewer: Michael Miller from Collegeville, PA United States  
Fits stc1000 and inkbird probe perfectly

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Versatile January 29, 2017
Reviewer: James Schultze from Rapid City, SD United States  
The bare thermowells allow me to utilize them in carboys with stoppers. I can adjust the length to fit my vessel.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Really nice thermowell January 12, 2017
Reviewer: John Anderson from Pasadena, TX United States  
These are really nice thermowells, And as always, BH had it shipped fast and well packed.
  I've been looking for a bare thermowell  to mount vertically in the top of my HLT/keg ( to avoid putting more holes in the side of my HLT ) but up till I found these, all the ones I found were either way to short and they had the 1/2" mounting welded to them. With this, I just had to pop a small hole in the top dome of my HLT/keg, drop the thermowell in a bit then slide a small silicone o-ring on and then a couple more on the 1/2" or so sticking out to keep it from dropping in. It reaches all the way down past my HERMS coil to the valve. Works like a charm and my temp probe fits perfectly.  Recommended. Would buy again

Was this review helpful to you?