Couplings Viking Johnson Dedicated Coupling: Viking Johnson Dedicated Couplings Viking Johnson dedicated straight couplings are used for joining pipes of:...

All Large Diameter Dedicated Viking Johnson couplings, stepped couplings, flange adaptors, MaxiFit, QuickFit, MegaFit, UltraGrip, FlexLock and AquaGrip (up to...

Of these, the rigid materials with high strength capabilities, such as steel, grey cast iron, ductile iron and concrete can...

Moderate ovality, especially in large diameter steel or ductile iron pipes, can frequently be rectified by selective bolt tightening to...

Gaskets will over their design life relax leading to a reduction in energy required to form a seal, which is...

Pipe Tolerances Viking Johnson couplings give their optimum performance when they are a close fit on the pipe.  Seal effectiveness...

The Viking Johnson system relies on good uniform contact of the gaskets with the pipe surface, and the following need...

Critical Dimensions L & M on Pipe End: If the pressure rating for the fitting is to be maintained, there...

The working pressure capability of a coupling varies with its size and construction. It is also dependent upon correct pipe tolerances...

Below ground, pipe thrusts can normally be restrained by means of concrete thrust blocks at bends, valves, etc. but above...

The maximum operating temperature of a Viking Johnson product is determined by taking lowest value of: – Different grades of...

All pipelines under pressure are subject to longitudinal forces, which tend to separate the component parts of the pipeline. Longitudinal...