Pipe Coupling Bolt Material 316 Stainless Steel Finish/Coating Polished Fitting Nominal Pipe Size 3 in For Movement Type Axial Material Grade 316 Maximum Operating Pressure 232 psi Overall Length 3 11/16 in Pipe Fitting Material Stainless Steel Seal Material Nitrile Seal Type Included Standard Basic Fitting Shape Coupling Standards ANSI ASTM 1476 AWWA C227-07 ISO NP-15837/15838 Application Air Natural Gas Non-Potable Water Propane Color Silver