How to Install a Faucet Sprayer and Dishwasher Vent

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There are a number of small jobs around the kitchen that are possible for the average DIYer to tackle. These include installing dishwasher vents and sprayer hoses. The dishwasher vent, also known as an air gap, helps keep the dishwasher from siphoning dirty water into the water supply while a faucet sprayer is a helpful fixture in a sink for getting dishes clean.

Things You'll Need

  • Wrench or pliers
  • Plumber's tape
  • Faucet sprayer
  • Marker
  • Air gap kit
  • Power drill with drill bits
  • Jigsaw or hammer and chisel
  • Sandpaper
  • Hose clamps (4)

Faucet Sprayer Installation

  • Turn off the water supply for the faucet where you want to install the sprayer. The water supply valve is typically located directly beneath the faucet and sink. Trace the water supply hose from the faucet down to where it meets the faucet supply valve to help pinpoint the location. Turn the faucet supply valve clockwise to shut off the water.

  • Open the faucet tap and allow all of the water to drain out.

  • Remove the sprayer cap on the side of the faucet with a pair of pliers or a wrench.

  • Insert the faucet sprayer, hose first, into the sprayer hole mounted on the sink or faucet until the neck of the sprayer rests inside the hole.

  • Wrap the threads on the sprayer inlet on the underside of the faucet with plumber's tape. Connect the coupling on the end of the sprayer hose to the faucet body.

  • Restore the water supply by turning the faucet supply valve counterclockwise. Turn on the water at the faucet and press the handle on the sprayer to check its operation. Tighten the sprayer hose coupling underneath the sink, if needed, to seal off any leaks.

Dishwasher Vent Installation

  • Choose an area for the vent tower on the countertop above the dishwasher. This is generally within 6 inches or so of the kitchen sink. Some manufacturers will provide you with a template to lay on the countertop to help mark the location. Outline the area needed for the vent tower on the countertop with a marker.

  • Drill through the edges of the vent opening with a power drill. The type of drill bit to use will depend on your countertop. For tile countertops, a diamond-tipped drill will help penetrate into the tiles; on laminate, a normal drill bit will suffice. Drilling a hole through quartz or granite will require a specialized cutting drill and a supply of water to keep the drill tip from overheating. Once the hole is drilled out around the edges, knock it out with a few taps from a hammer and chisel or cut around the hole perimeter with a jigsaw. Sand down the rough edges of the hole.

  • Insert the vent tower body up from beneath the countertop. Secure it in place with the supplied retaining nut.

  • Connect the drain line from the dishwasher to the inlet nipple beneath the vent tower. In a typical setup, this will be the smaller 5/8-inch connection. Secure it in place with a hose clamp.

  • Connect another drain hose from the 7/8-inch vent tower drain to the inlet on the garbage disposal or tailpiece beneath the sink. Secure both ends with hose clamps.

Tips & Warnings

  • Depending on your faucet model, it may not have an inlet cap.
  • The measurements given for the drain hose sizes may vary according to your dishwasher manufacturer.

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