13MHPV800 Dixon Valve 304 Stainless Steel Sanitary 8" Pipe Size Bolted ClampFeatures: Bronze nuts tightened to 20 ft. lb. of torque Please note: In sizes 1 2" through 12" pipe is known by its nominal inside diameter, which differs from its actual inside diameter. To distinguish pipe sizes from actual measured diameters as used for tube, the terms iron pipe size (IPS) or nominal pipe size (NPS) are usually used. For all pipe sizes, the outside diameter (OD) remains constant; the variations in wall thickness affect the inside