Blocking Plug Bypass Connection Size Not Applicable Bypass Connection Type Not Applicable Bypass Thread Gender Not Applicable For Maximum Pipe Inside Diameter 18.3 in For Minimum Pipe Inside Diameter 17.7 in For Pipe Size 18 in Handle Material Zinc-Plated Steel Included Water Fill Port/Hose Not Included Maximum Back Pressure (Air) 8.7 psi Maximum Back Pressure (Water) 20 ft of head Overall Height 9.7 in Padlock Shackle Diameter Not Applicable Plate Material Aluminum