Mechanical Expansion Plug Bypass Connection Size Not Applicable Bypass Connection Type Not Applicable Bypass Thread Gender Not Applicable For Maximum Pipe Inside Diameter 0.54 in For Minimum Pipe Inside Diameter 0.48 in For Pipe Size 1/2 in Handle Material Zinc-Plated Steel Maximum Back Pressure (Air) 10 psi Maximum Back Pressure (Water) 23 ft of head Overall Height 1.69 in Padlock Shackle Diameter Not Applicable Plate Material Zinc-Plated Steel Plug Seal Location End of Pipe