Pipe Coupling: Epoxy Coated Ductile Iron, For Vibration Item 1DKP3 Item 1DKP3 Satin Nickel US15 Pkg Qty 3 Brand SMITH BLAIR Basic Fitting Shape Coupling Bolt Hole Diameter 5 8 in Bolt Material Alloy Steel Color Blue Finish Coating Epoxy Coated Fitting Side A Gender Female Fitting Side A Nominal Pipe Size 2 1 2 in Fitting Side A Outside Diameter 7 1 2 in Fitting Side A Type Flanged Fitting Side B Gender Female Fitting Side B Nominal Pipe Size 7 1 2 in Fitting Side B Outside Diameter 7 1 2 in Fitting Side B Type Flanged For Movement Type Vibration For Pipe Schedule 250 Includes Seal Standard Low Lead Certified Standard No Maximum Operating Pressure 250 psi Overall Length 11 in Pipe Fitting Material Ductile Iron Seal Material Nitrile Specific Fitting Shape Coupling Standards ANSI A21 These couplings are made of lightweight ductile iron and have a bolted flange and a sleeve type design