4 Inch Tri-Clover Clamp - 3 SegmentsThese three segment sanitary clamps are three collets connected together to provide a higher working pressure rating for 4 Inch Tri Clover fittings. We would highly recommend this style over the 2 section TC Clamps if you are going to exceed pressures of 45psi. At the same time, the clamp nut joints are well fixed and there is no wiggle between the three fragments, Make the clamping pressure evenly distribute. Wing Nut Style Clamp The wing nut style