Convert Roman tub to permanent shower

[Irvin88]

I have a Kohler Roman tub that needs to be converted to a shower. I took off the faucet and I need an adapter so I can connect the shower head. My question is how do I know what size adapter to get?

Here are two pictures to show what I'm trying to explain.

Edit: There is no threading on the faucet itself, or I would've used one of these adapters

What I am looking for is something like this
http://www.lasco.net/hose-adapters-...hd-x-mht-x-std-m-aer-p-7829.html#.VZuAt_lVhBc
but I believe that is the same as is in the video and I do not know if the thread will match?

 

[hj]

It is a "proprietary" thread and NOTHING will connect to it, because they never intended for it to be converted to a shower.

 

[Sponsor]

 

[Irvin88]

It is a "proprietary" thread and NOTHING will connect to it, because they never intended for it to be converted to a shower.

Thank you for the reply.

Will any slip-on faucet connect to the pipe or is that proprietary as well? My thinking is I could get a faucet that has a threaded end and connect the shower head that way; as shown in the youtube in my initial post.

 

[hj]

The shank is specific to that series of spouts, so you would have to find one from THAT manufacturer, that fits THAT shank, and has a standard sized aerator. THere is one other possibility. IF that internal thread is a standard pipe thread, (which would have been used to seal the faucet for testing purposes), then a standard pipe nipple may connect from it to your hose. your hose should have a 1/2" pipe thread, NOT a hose thread.

 

[Irvin88]

The shank is specific to that series of spouts, so you would have to find one from THAT manufacturer, that fits THAT shank, and has a standard sized aerator. THere is one other possibility. IF that internal thread is a standard pipe thread, (which would have been used to seal the faucet for testing purposes), then a standard pipe nipple may connect from it to your hose. your hose should have a 1/2" pipe thread, NOT a hose thread.

I really appreciate all your help! So from the sound of it something like this may fit is what you're saying?
Banjo NIP050-SH Polypropylene Pipe Fitting, Short Nipple, Schedule 80, 1/2" NPT Male, 1-3/4" Length

 

[Irvin88]

I resolved this with the help of the feedback I received here back in July but I just wanted to follow up in case other people stumble upon this thread. I don't remember the exact measurements but I believe I basically ended up with a 1/2" to 1/4" pipe threaded nipple/contraption to resolve this.

 

[sjt023]

I've come back to this forum so many times while trying to figure out a way to add a handheld shower head to our Kohler roman bath. After months of starting and giving up, i finally found the piece that works and wanted to give a quick update on what worked for us. This adapter was purchased at Home Depot for under $10.

-Everbuilt 1/2 in OD Compression x 1/2 in MIP Brass Adapter Fitting
*You won't need the brass insert or nut included in this package

The 1/2 in OD fits perfectly in the existing Kohler pipe fitting and the 1/2 in MIP allows you to attach a standard handheld shower head.