4" No Hub BV1202-R-1 - Cast Iron Backwater VAlves with Floor Level Nickel Bronze Access Covers

Specification: MIFAB Series BV1200-R lacquered cast iron backwater valve with no hub inlet and outlet, gasketed bolted cover, automatic bronze flapper type backwater valve, lacquered cast iron extension to receive pipe extension (by others), and nickel bronze scoriated access cover.
Function: Used in main branch or sewer lines to prevent backflow from the sewers. Full opening access through cover to the flapper assembly for repair and maintenance. Cast iron extension piece and nickel bronze floor access cover provide means with an extension pipe (by others), to raise the access cover to whatever height is required.