PRODUCTS & SERVICES

                 
    ORIFICE RUN SELECTOR      
         
         
    SIZE SCH TYPE RATIO .75    
         
    Select Size, Schedule & Type, Then if required complete 1-3 below & key in distance  
     
     
    Notes        
    1 Orifice Plates to ISA-RP3.2 (3mm thk < 16", 6mm thk > 14")    
    2 Pipe Taps 1" from face of plate, 1/2" Screwed (300#-600#). 1/2" SW > 600#    
    3 Internal dia used in calculations. Minimum size of orifices 2"    
    4 Do not use staightening vanes unless shown on P&ID    
    5 Horizontal installation prefered, allowable to install in vert (flow up Liquids, flow down wet vapours, dry gas either)    
    6 Taps (Hor. For Steam. Hor to 45 dn. Liquid. 45 either side of vert (UP). Air,dry gas)    
    DISTURBANCES UPSTREAM FROM ORIFICE PLATE        
  NO DISTURBANCE (FIRST IS NEAREST THE ORIFICE PLATE) DIST. Min INSTRUCTIONS  
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  "Fitting" refer only to fittings affecting flow, it does not include flanges gaskets etc. (weld at orifice made smooth with ID)  
       


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