Red Seal Plumbing Practice Exam

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A double tee wye is suitable for connection of two back outlet water closets in a back to back installation.

True
False

The correct answer is: False

A double tee wye is not suitable for connection of two back outlet water closets in a back to back installation. This is because a back outlet water closet requires a vertical connection, whereas a double tee wye is designed for horizontal connections.