Installation Guide

TUTORIAL:

How To Install a Kitchen Sink Drain Basket

Just like removing and installing a sink, installing a kitchen sink drain basket yourself is not a difficult thing to do. But it

needs to be done correctly, so there are not any leaks. Depending on the size of the sink, a full sink of water can weigh

200 lbs or more. That amount of weight will expose any gaps in the putty or caulking and find a way to leak out.

1. Parts of Kitchen Sink Drain Basket Assembly:

The type of drain assembly used is shown in Figure 1 with all

parts separated and in Figure 2 with all parts re-assembled.

It is shown again in Figure 3 assembled under the sink. The

paper gasket is not shown in Figure 1.

This type of drain assembly has a 2nd cup that acts as a

giant washer to hold pressure against a rubber

washer/gasket and the underside of the sink when the nut is

tightened. Other types of drain assemblies may just use a

single nut for this purpose.

2. Assembled Kitchen Drain:

The basket strainer has a flange that fits on the inside of the

sink and has a threaded pipe that extends out through the

hole underneath the sink.

The basket is the removable part that plugs the drain when

you want to fill the sink with water and the strainer catches

large chunks of food to prevent clogs.

The Flange of the basket strainer goes on the inside of the

sink and the rubber washer/gasket, paper gasket, pressure

cup and nut are under the sink. The rubber washer seals

the sink from below, putty or caulk seal the flange to the

sink from above.

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TUTORIAL: How To Install a Kitchen Sink Drain Basket Just like removing and installing a sink, installing a kitchen sink drain basket yourself is not a difficult thing to do. But it needs to be done correctly, so there are not any leaks. Depending on the size of the sink, a full sink of water can weigh 200 lbs or more. That amount of weight will expose any gaps in the putty or caulking and find a way to leak out. 1.
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3. Parts of Kitchen Drain Assembly under the Sink: As the nut is tightened, it squeezes the lower part of the basket assembly towards the bottom of the sink and at the same time pulls the flange down onto the upper part of the sink. The threads also used to attach the drain line to the basket strainer. The flange of the basket strainer must be sealed on the upper part of the sink with plumbers putty or silicon sealant.
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4. Rope of Plumbers Putty Applied in Ring around Drain Hole: Apply the rope of putty around the drain hole as in Figure 4. If using caulk, apply a continuous bead around the hole. Place the flange of the drain carefully on the rope of putty or the bead of caulk, then assemble the parts of the drain as shown if Figures 2 and 3. On the underside of the sink, make sure the rubber washer is against the sink and the paper gasket is between the rubber washer and the cup or nut that contacts it from below.