KOHLER K-737 Installation Manual

Installation Guide

Diverter or Transfer Valve

K-737

M product numbers are for Mexico (i.e. K-12345M)
Los números de productos seguidos de
M corresponden a México (Ej.
K-12345M)
Français, page “Français-1”
Español, página “Español-1”

1173682-2-A

Tools and Materials

Plus:

• 1/2" Piping or Copper
Tubing for outlets

• 3/4" Piping or Copper
Tubing for inlets

• 1/2" NPT Plug

Wrench

1/4"

Hex Wrench

Tubing CutterAdjustable

Thread
Sealant

Solder

Propane
Torch

Before You Begin

IMPORTANT! Risk of product damage. Do not apply direct heat to
the transfer valve body. Excessive heat will damage the plastic valve
components and plaster guard.

Observe all local plumbing and building codes.
Do not remove the plaster guard from the transfer valve until

instructed to do so.
A mixed water supply is required for this transfer valve.
If less than three accessories will be installed, do not plug any

outlets on this transfer valve without completing the two-way
conversion. The transfer valve is not intended to be used as a
shut-off valve.

Carefully plan the installation before beginning. Carefully read
the entire instructions. Component location, spacing, and
situational requirements can vary.

Shut off the main water supply.
Inspect the waste and supply tubing; replace if necessary.

1173682-2-A 2 Kohler Co.

Plaster
Guard

Max
Finished
Wall

2-7/16"
(6.2 cm)

3-3/4" (9.5 cm)

Min
Finished
Wall

Mixed Water
Supply 3/4"
Copper Tubing
or Piping

1. Prepare the Site

Provide a 2-7/8″ (7.3 cm) to 3-1/8″ (7.9 cm) diameter hole in the
wall material for the plaster guard.

2. Route and Connect the Water Supply

Route the 3/4″ mixed water supply line to the transfer valve
location.

Apply thread sealant to the inlet port threads and connect the
water supply to the transfer valve inlet.

Kohler Co. 3 1173682-2-A

Accessory Water Lines
1/2" Copper Tubing or Piping

Mixed Water Supply 3/4"
Copper Tubing or Piping

Three-Way Valve Installation

NOTE: When the valve is converted to two way operation, handle
rotation is limited to 120 degrees. The plug at the center connects
the left and right hand ports allowing either port to be used for an
additional accessory.

Install 1/2″ copper tubing or 1/2″ piping for all accessories.
Securely fasten the piping and outlet ells to the framing.

Install temporary 1/2″ nipples in the outlet ells so they extend a
minimum of 2″ (5.1 cm) beyond the finished wall.

Turn on the water supply to the transfer valve and check the
transfer valve for proper operation and leakage. Once everything
is verified, turn off the water.

Install caps on the temporary bath and shower nipples. Turn on
the water and check for leaks. Once no leakage is verified, turn
off the water.

Complete the finished wall.

1173682-2-A 4 Kohler Co.

E-Ring

Missing Tooth

Plaster Guard

Accessory # 2
Water Line

Detent

Spacer

Mixed Water Supply 3/4"
Copper Tubing or Piping

Accessory # 1
Water Line

1/2"
NPT Plug

Two-Way Valve Installation

Convert to a Two-Way Valve

IMPORTANT! If less than three accessories will be installed, do not
plug any outlets on this transfer valve without completing the
two-way conversion. The transfer valve is not intended to be used
as a shut-off valve without the two-way conversion.

Temporarily remove the plaster guard.
Rotate the detent until positioned vertically; see above

illustration.
Verify the missing tooth is oriented up.
Identify the plug at the center of the valve body and the spacer

underneath the detent.
Using a hex wrench, remove the plug. Discard the plug.
Plug the port that will not be used (either the left or right port)

with a 1/2″ NPT plug.
Use pliers to remove the spacer from beneath the detent.
Push the detent down; ensure the points of the detent engage the

notches of the valve cartridge.
Install the spacer above the detent and under the E-ring.

Plug

Install the Two-Way Valve

Install 1/2″ copper tubing or 1/2″ piping for both accessories.
Securely fasten the piping and outlet ells to the framing.

Kohler Co. 5 1173682-2-A

Two-Way Valve Installation (cont.)

Install temporary 1/2″ nipples in the outlet ells so they extend a
minimum of 2″ (5.1 cm) beyond the planned finished wall.

IMPORTANT! When testing the valve operation, your selections
should be as follows: Accessory 1, Accessories 1 and 2, Accessory 2.
If your valve operates as follows: Accessories 2, Accessory 2,
Accessories 1 and 2; you will need to remove the spacer, rotate the
detent 180° then reinstall the spacer.

Turn on the water supply to the transfer valve and check the
transfer valve for proper operation and leakage. Once everything
is verified, turn off the water.

Install caps on the temporary bath and shower nipples. Turn on
the water and check for leaks. Once no leakage is verified, turn
off the water.

Reinstall the plaster guard.
Complete the finished wall.
Remove and discard the plaster guard.
Install the trim according to the installation instructions packed

with the trim.

1173682-2-A 6 Kohler Co.