The Whirlpool WP3360977 Washer Vacuum Break regulates the drain system and reduces the risk of backflow into the washer during draining. This replacement component is installed in the washer’s drain pathway and allows air into the system when needed to maintain proper pressure balance. By separating the drain flow from the appliance, it supports controlled wastewater discharge and pro... https://www.partsmelange.ca/whirlpool-wp3360977-vacuum-break-for-washer