How many Stud Tensioners do I need?
You can tension most applications with one Hydraulic Stud Tensioner. On applications with several studs; however, HTI recommends using enough Hydraulic Stud Tensioners to provide between 25% and 50% “cover”. This means one Hydraulic Stud Tensioner for every fourth, or every other, stud. On circular flanges, HTI recommends using at least four Hydraulic Stud Tensioners and, preferably, 25% or 50% cover. For example, on a flange with 36 studs, use four, nine (25% cover) or eighteen (50% cover) Hydraulic Stud Tensioners. Using this number of Tensioners gives the benefit of even flange closure and speeds up the job. Some critical applications require 100% “cover”.
