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The SpinCycle Shorty is the version you'd use if you have a kettle with a welded or soldered in fitting that currently presents 1/2" NPT female threads to the inside of the kettle. This whirlpool fitting includes a silicone oring and the male NPT threads are cut smaller so that it will thread all the way in to most female threads. Given the flex in the oring, you'll be able to get a seal while the side output bore is facing horizontal either left or right.
This unit can also be used if you WANT to install a compact whirlpool in a weld in or solder in method. You'd install one of our M/F Pull through bulkheads first, weld or solder that in, then thread this SpinCycle Shorty in.
*************************************************** **************************************************** WHIRLPOOL BUYER'S GUIDE - Everything you ever wanted to know about it and more.
First, all we're trying to accomplish here is to get the volume of the liquid in the kettle spinning. It's accomplished by drawing off liquid from the drain bulkhead, into a pump and then from the pump into a specific piece of hardware that forces the flow parallel to the kettle wall (more on that later).
WHY? Well, there are a few reasons why a brewer would stir liquid during brew day. CHILLING. If you use a drop in immersion chiller you can either manually stir aggressively or whirlpool stir the wort to decrease chilling time substantially. HERMS SYSTEMS: If you have a 3 vessel system with a HERMS heat exchange coil in your hot liquor tank, you must stir the water in the HLT to ensure consistent heat exchange in the coil. KETTLE TRUB SEPARATION: The stirring motion puts all your hops, hot and cold break (trub) in a neat pile. Why it happens is interesting science and you can learn all about it by searching for the "Tea Leaf Paradox". Here's a demo video: https://youtu.be/dGAFxs63SlE?t=66
If trub separation is your goal, we recommend using a kettle fining agent such as whirlfloc. Shut the pump down after about 3 minutes of stirring and leave the kettle alone for at least 30 minutes, or up to an hour. That lets some of the finer particles settle all the way down to the bottom.. Then slowly draw off the clean wort using a diptube as close to the kettle wall as possible. HOP STANDS A lot of modern recipes call for whirlpool hopping or a "hop stand". Besides trying different temperatures for this process, many people also recommend keeping the wort moving during this hopping phase. Since it's not physically rolling around in the boil, the mechanical movement helps to better extract the oils from the plant material.
A quick word about competitor products. Bobby, the owner of BrewHardware has been an active brewer for over 15 years and he's also an engineer. He doesn't just copy other products and rebrand them but prototypes and tests them for actual real world efficacy in brewing applications. Every one of the whirlpooling products sold here are effective at stirring. You will find quite a few product variations but it's only to deal with different customer situations. Here is a brief summary of the variations. You can click on the links to read more and order that specific version.
SPINCYCLE: This version has a built in bulkhead that requires a hole drilled to 13/16" somewhere in the upper side wall of your kettle. This version has a welded "drop tube" that brings the liquid flow below the liquid level of the kettle. This unit does NOT require an exterior ball valve since the port is above the liquid line at all times.
SPINCYCLE SUBMERGE This version is essentially the original Spincycle product above but without the welded drop tube. It also acts as it's own bulkhead but it will be installed in a drilled 13/16" hole BELOW the liquid level (somewhere between 2" off the bottom and up to 2" below the lowest planned liquid level). This product requires a ball valve on the outside of the pot.
SPINCYCLE SHORTY - This is a modified version that is meant to thread in to a female NPT welded port below the liquid line. It does NOT have a built in weldless bulkheads.
SPINCYCLE OVERBOARD - If you want to add a whirlpool return but you don't want to drill any new holes (or don't have existing ones). This one clamps over the top edge of the kettle.
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Vigorous whirlpool 
It works, but 
Does not fit