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A weldless bulkhead is used to provide a liquid-tight port into your
brewing vessels. This is an alternative to having a coupling or spud
welded or soldered in.
Our new line of "True Bulkheads" were completely redesigned from scratch. The entire homebrew industry is flooded with makeshift bulkhead designs that are only a small step up from the DIY parts you'd find at a hardware store. While we were confident in the performance of our previous bulkheads made from off the shelf parts, the new True Bulkheads solve several shortcomings and look sharp in the process.
All varieties of True Bulkheads:
- Use a huge hex size with a machined O-Ring containment groove (gland). When used with an oring, you can tighten the bulkhead with gorilla strength for stability and the gasket will not budge or get damaged.
- Are machined from a single piece of hex bar stock for less places for crud to hide.
- Rely on an exterior locknut to make the gasket squeeze. No more trial and error with various shim washer thicknesses and playing teflon tape Olympics.
- Accommodate vessel wall thicknesses up to 3/8" or 8mm thick while still leaving enough male thread for a ball valve or any other female threaded fitting.
- 1/2" NPT threads on the outside of the kettle.
The theme here is that these bulkheads are in a different league and we think the pricing is unbelievably reasonable for what you get.
For this model; TrueBulkheadBarb, the interior of the vessel sees a large bore 5/8" hose barb allowing you to attach 1/2" ID silicone tubing.
We use this fitting in our cooler mash tun conversion kits but it can be used anywhere that you need a bulkhead with a simple hose attachment.
NOTE: If you are installing this into an existing hole that is larger than 13/16", such as 7/8" or more like in Rubbermaid Coolers, please select the option for the 7/8" hole in the option dropdown. The standard solution DOES fit Igloo Cylindrical coolers just fine.
Hole Side Options: If your hole is closer to 13/16" the standard oring seals great. If your hole is a bit over-sized, right around 7/8", we can include an additional thin oring that will keep the fitting centered in the hole while you tighten it up. If you have no way of accurately measuring your hole, the threads of a 1/2" male NPT fitting will be snug in a 13/16" hole and wiggle side to side a bit in a 7/8" hole. When in doubt, select 7/8". You can remove the extra oring and try it but you'll have it in case you need it.
Install Notes:
- Drill a clean 13/16" diameter hole in your pot taking care
to avoid any wall contours that may prevent the interior hex from
sitting flat on the inside wall of the vessel. It is also important to remove any sharp edges or "burrs" from the inside edge of the hole, otherwise the oring can get torn. Insert the threaded portion of the unit through the hole from the inside of your pot or keg with only the oring in place. On the outside, install the metal washer and locknut and snug everything up with a pair of wrenches. Hint, it's best to hold the interior hex so that one of its points is facing up. It's better to hold the interior fitting still and tighten the exterior nut to protect the gasket/oring.
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An OG in the bulkhead game. 
Purchased for 10 gal Homedepot cooler.