Photo Projects 4” backwater valve connected to 6” pipe downstream 4” backwater valve connected to 6” pipe downstream – Installations and repairs by Mister Plumber – plumbing, drain services by trusted, licensed Toronto Area plumbers. September 20, 2018/by Toronto Plumbers https://www.misterplumber.ca/wp-content/uploads/2018/10/4-backwater-valve-connected-s.jpg 250 300 Toronto Plumbers https://www.misterplumber.ca/wp-content/uploads/2023/03/Main-logo-2022.webp Toronto Plumbers2018-09-20 14:53:322018-10-10 14:55:294” backwater valve connected to 6” pipe downstream