Stauff SP 325.4 ACT DP AS U W5 K 642012 Beta Clamp Kit, 25 3 8 mm Tube OD, Smooth Bore, 316 Stainless Steel, Polypropylene Cushion, Weld On 860ATBL Water Shape Straight Type Connector Water Shape Straight Type Connector Connection Type Pipe Connection Style Threaded Thread Start Recessed Connection NPT Female Pipe Size 3 4 Length 2 1 8" Maximum Pressure 300 psi @ 72° F Material Steel For Pipe Schedule 160 23 Features Foam Material Comes with a Pressure Sensitive Adhesive on the Seam Flexibility Flexible Smoke Developed Index 143 Plenum Rating Plenum Rated Foam Cell Type Closed For Piping System Chilled Water Clamp Material 316 Stainless Steel Pressure (PSI) 2000 Standards API RP 552