Only 1 Out Of 5 People Get This Plumbing Item Quiz RightShare:FacebookPinterestTwitterMailWhich fitting holds water to block sewer gas?20%Next Correct Incorrect The bend in a P-trap retains water, creating a seal that blocks sewer gas from entering through the drain. Which fitting holds water to block sewer gas? Supply line Angle stop P-trap Faucet aerator 20%
