How to Install a Delta Shower Valve on a Sterling Tub Enclosure

When you're installing a new bathtub and shower, one option is to install a tub enclosure. This system consists of a bathtub and panels that cover the walls around the tub. The panels often contain small built-in shelves or soap dishes. Sterling, a division of Kohler, is one manufacturer of these enclosures. To operate the shower, you'll need to install a shower valve. Delta is a leading manufacturer of plumbing fixtures. Before installing the fixture, read the instructions provided by Delta, as the exact installation procedure can vary depending on the fixture you purchased.

Screwdriver
Adjustable wrench
Clear silicone caulk
Drill
Thermometer

Instructions

- 1
  Place the adapter assembly into the valve body and secure it with the provided hardware. Depending on the fixture you have, this can be a screw or a nut. The valve body is the metal part that extends out of the wall from the water pipes and houses the valve assembly.
- 2
  Slide the cartridge assembly into the valve body with the words "HOT" or "HOT SIDE" on the left. Fit the tab on the side of the cartridge assembly into the slot on the valve body.
- 3
  Place the bonnet nut over the end of the cartridge assembly and tighten it by twisting it onto the valve body with your hands. The bonnet nut locks the cartridge assembly into the valve body.
- 4
  Slide the O-ring over the valve body until it rests on the body immediately behind the bonnet nut. The O-ring acts as a spacer for the sleeve that covers the valve body and also helps seal the fixture.
- 5
  Slide the sleeve over the cartridge and valve body until it rests against the back of the valve body.
- 6
  Apply a thick bead of clear silicone caulk around the hole in the tub surround for the shower valve. This provides a watertight seal. The hole was cut in the surround before it was installed against the wall.
- 7
  Slide the trim into position over the valve body and press it into the caulk. Drive the screws through the holes in the trim and into the wall with a drill. Depending on the fixture you have, the trim may consist of multiple pieces.
- 8
  Place the shower handle onto the end of the cartridge pointing to the right. Turn it to the open position, but do not secure it with the screws.
- 9
  Turn the water supply to the shower on and allow it to run as hot as it can and as cold as it can. Record the temperatures. If the hot water is more than 120 degrees Fahrenheit, take the handle off and twist the limit stop on the fixture clockwise until the temperature drops below 120 degrees. The limit stop contains teeth that lock it in place; each tooth equates to about 5 degrees in temperature. If the water is too cold, twist the limit stop counterclockwise until you reach the temperature you desire.
- 10
  Replace the handle and screw it into place.

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