Clothes Washer minimum trap size is specified as?

Clothes Washer minimum trap size is specified as?

• A. 1-1/2 inches
• B. 2 inches
• C. 2-1/2 inches
• D. 3 inches

Answer: (B)

Clothes washers discharge a large volume of water quickly and carry lint and debris, so the trap must provide enough flow area and a reliable water seal during that surge. A trap smaller than 2 inches would bottleneck the flow, be more prone to clogging from lint, and risk losing the trap seal because of the washer’s sudden surge. Codes specify a minimum trap size of 2 inches for a clothes washer to handle these demands and maintain the seal. Therefore, 2 inches is the minimum required; larger traps are allowed but not necessary for meeting the minimum.

Clothes washers discharge a large volume of water quickly and carry lint and debris, so the trap must provide enough flow area and a reliable water seal during that surge. A trap smaller than 2 inches would bottleneck the flow, be more prone to clogging from lint, and risk losing the trap seal because of the washer’s sudden surge. Codes specify a minimum trap size of 2 inches for a clothes washer to handle these demands and maintain the seal. Therefore, 2 inches is the minimum required; larger traps are allowed but not necessary for meeting the minimum.