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Kohler K-728-K-NA Mastershower 2- or 3-way Transfer Valve - Replaces Kohler K-687-K

Item #: BCI1253173
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Product Details for the Kohler K-728-K-NA

Mastershower(R) 2- or 3-way Transfer Valve (Replaced K-687-K)

The MasterShower 2- or 3-way transfer valve brings a new level of innovation and flexibility as a custom shower solution. The valve is shipped as a three-way transfer valve, to allow control of three separate components to six different output options. The valve can also easily be configured onsite to be used as a two-way transfer valve, for control of two component shower applications. One valve providing solutions for a wide variety of personalized showering experiences.

  • Replaces the K-687-K (3 Way Valve) in 2010
  • Patented K-joint installation ensures consistent trim appearance, regardless of variability in valve rough-in
  • Controls all functions from a single valve
  • Required transfer valve trim works in both two- and three-way applications
  • Brass construction
  • Wall-mount
  • Selection of one or combination of two outlets
  • Single-handle control
  • One 3/4" NPT inlet connection
  • Three 1/2" NPT outlet connections
  • Intended for use with Kohler(R) bath and shower supply valves
  • Can be converted from 3 outlets (360 degree handle rotation) to 2 outlets (120 degree handle rotation)
Our SKU: Kohler K-728-K

This product is listed under the following manufacturer number(s):

*Denotes a finish or option that has been discontinued

Kohler K-728-K Reviews

Rated 5 out of 5 by from Works smoothly, as advertised I purchased this transfer valve for a bathroom remodel to allow me to switch between a regular fixed shower head and a hand shower. The specs say that it has a 3/4" inlet valve. But if you have the more common 1/2" plumbing, like I do, not to worry - any plumber can easily convert the opening to 1/2". The specs also explain that it can be used as a two-way valve, rather than a 3-way, and this is how mine is set up. In two-way usage, the valve rotation is about 120 degrees - all the way to the right sends water to one fixture, all the way to the left sends it to the other, and halfway in the middle sends it (at somewhat reduced pressure) to both. The valve turns smoothly and evenly, and you can feel a slight "click" when the valve is moved into each of its three positions, which is nice because it lets you know you are in the right place. Like any good rough-in valve, it is buried behind the wall tile after its installed, and it just does what it is supposed to do, without your ever having to think much about it.
Date published: 2010-06-24
Rated 5 out of 5 by from PROBLEM RESOLVED!!! I wanted to update my earlier review. I contacted Kohler Customer Service who explained that the plug in this valve is sealed in with some sort of adhesive. They are looking at fixing this issue. They said they would send a replacement valve without the plug installed. In less than 24 hours from this phone call, the valve arrived at my door! Now THAT is customer service!!! Value works great!
Date published: 2014-01-31
Rated 5 out of 5 by from Highly recommended Easy to install as a 3 way valve. NPT threads on inlet and 3 outlets makes installation easy. Instructions very clear and easy to follow. Don't be afraid to install this yourself. Easy to match existing or new wall profile as it supports wide range of thicknesses.
Date published: 2012-02-29
Rated 5 out of 5 by from Quality Product Installation was straighforward except minor challenge of converting 3/4 inlet down to 1/2" to marry up with existing service line. The 6 way diverter rotates smoothly and positive detent at each position.
Date published: 2010-09-24
Rated 3 out of 5 by from Not what I expected Should have read descriptions more carefully. I have a showerhead and a handshower. I was expecting this to be 3-way switching between two showers and 3rd position would be OFF. Instead this rotates 360 degrees clicking into 6 positions, where 2 serve as I expected and others are just mixing both showers. No OFF position.
Date published: 2011-09-01
Rated 5 out of 5 by from Excellent product This is an excellent product. Especially when I match it with the Kohler flip side hand held shower head.
Date published: 2015-01-12
Rated 5 out of 5 by from Great Valve Works like a champ as designed. But, the real value was purchasing it from - the first one arrived damaged, a call to resulted in receiving a new replacement valve the very next day. Their responsiveness was impressive and made me feel like a valued customer. As a result, they will be my first choice to fill my next project requirements.
Date published: 2014-10-04
Rated 4 out of 5 by from Straighforward install. Good ops. Oops, broke. Read directions and then install - straightforward. I use it as a two-way transfer valve between a shower head and a handheld (Kohler Forte). Simple two position function. Mine worked perfectly for two months - then it became stuck in one position! Kohler shipped me a new internal cartridge assembly right away.
Date published: 2012-05-20
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8 Questions from the Community
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I plan to use this as a 2-way. Can I use the unused 3rd outlet as an off position

The 3rd outlet on the Kohler K-728-K cannot be used as an off position. There is a plug included for 2 way installation.

If I use a separate shut off valve, can this transfer valve be used to select one output between a shower head, a rain head, or a hand shower?

The Kohler K-728-K can be used for that. It diverts water from one outlet to another, be it a rain head, shower head, or hand shower.

If this valve is used as a 3-way, can it run different fixtures at the same time?

The Kohler K-728-K will allow you to run a combination of 2 fixtures at once but not all at once.

Are there instructions on where to place the handle for warm water from the shower head?

Kohler's installation guides are available on each trim kit's product page; they do have suggestions. However, there really isn't a standard distance. You can mount your shower head as far from the handle as you wish as long as they are still on the same pipe line.

Are there instructions on where to to place the handle for warm water from the shower head?

Kohler's installation guides are available on each trim kit's product page; they do have suggestions. However, there really isn't a standard distance. You can mount your shower head as far from the handle as you wish as long as they are still on the same pipe line.

does this valve work as a shut off valve also? In other words..can one position be used as shower head, the other a rain water tile fixture and the 3rd position completely turn off all water ?

The Kohler K-728-K is not designed as a cut off. The pressure balanced, mixing valve handle, such as the K-304-K, that must be purchased for a functioning shower serves as the cut off and temperature mixer.

Can this valve be converted from a 3-way to 2-way function at trim out time?

The Kohler K-728-K is made to be used as a 2 OR 3 way diverter. The installation guide here explains the setup for both:

If I have 3 components, A, B, and C, what are the 6 different output options?

The remaining ports are for shared positions.

Kohler K-728-K Technical Specs

Country Of Origin USA
Made in America Yes

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