Test Ball Plug, Pneumatic, Size 6 InMfr # 270067 Material Rubber For Use In DWV Systems to Seal Round and Out of Round Pipe Max. Back Pressure 30 ft of Head Type Pneumatic Required Inflation Pressure 30 psi Item Test Ball Plug Contains Pressure Release Valve No Test Plug Weight 1. 9 lb Air Connection Male Tire Valve Application Blocking, Pipe Plug, Testing Plug Application For General Plumbing (6 in dIa or less) For Use On Pipe Body Type Textured Body Maximum Back Pressure (Air) 13 psi