Test Ball Plug, Pneumatic, 21 In, Rubber

Test Ball Plug, Pneumatic, Nominal Size 21 In., Min. Dia. 18.85 In., Max. Diameter 21.38 In., Max. Back Pressure 30 ft. of Head, Max. Back Pressure 30 ft. of Head, Required Inflation Pressure 25 psi, Deflated Size 26.00 In.L x 18.20 In.D, Material of Construction Natural Rubber, For Use In Blocking Sewer Flow Or Conducting Sewer Air Tests