1/2" - 2-1/2" Standard Port, 1/2" - 2" Full Port, Meet wall thickness requirement of ANSI B 16.34 for class 6003" - 4" Standard Port Class 300, and 2-1/2" - 3" Full Port Class 300.Series C84/C99/CD84 In-line serviceable swing-out center section allows easy access to internal valve components without disturbing alignment of pipe.Bottom Entry Stem Prevents accidental removal of stem under pressure. Self adjusts with pressure andtemperature fluctuations.  Bottom entry system helps prevent accidents and injuries.High Cycle Stem Packing PEEK and Nova* thrust bearings and stem seals extend valve cycle life and are the best choice for actuation. Fully Encapsulated Body Seals (Series C84/C99/CD84) Allows valve ends to be welded in line without disassembly,saving costly labor time.Also prevents seal ruptures in high pressure and eliminates cold flow.Integral Mounting Pad ISO 5211 Ideal for actuation. Centering lip feature assures precise alignment of bracket, stem and coupler. Allows for secondary containment unit to be added when necessary.