PVI Industries PV500-25 User Manual

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 Steam Heater  
 
11 
 
5.  Tighten uniformly and in a diametrically staggered pattern as illustrated below: 
 
 
WARNING: It is extremely important to follow 
a proper tightening sequence. If not followed, 
the flanges can become cocked and a leak 
will result. When tightening flanges with 
spiral wound gaskets, if cocking occurs, the 
result can be deformation and non-repairable 
damage to the gaskets in addition to a 
resultant leak. Any gasket leak can result in 
potential injury to adjacent personnel.