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The most common kitchen counter height is 36 inches, but it can vary from 30 to 45 inches. The standard kitchen sink is 8 inches deep, which means that the normal distance between a kitchen sink drain and the floor is 28 inches. This will vary, depending on the height of the counter and the depth of the sink bowl. In the bathroom, the sink drain is typically between 24 inches above the floor.
The drain hose must be elevated prior to going into the household drain otherwise a siphoning effect will take place. A drainage standpipe or wash basin should be a minimum of 34 high to eliminate the possibility of siphoning.his then makes the actual drain height irrelevant. However, siphoning can still take place if the drain hose is sealed into the stand pipe. The drain hose should not be sealed into the stand pipe but instead just held in place using a nylon tie or just allowing the weight of the hose to hold it in place.