Universal Microsystems
High precision, restrictive flow orifices for
gas flow control


Phone: 408-828-1460 E-mail Us

   
Find a Silicon Orifice
Knowing gas flow desired and inlet pressure
  

Follow steps below


Step 1
Convert application gas flow (in sccm)
to N2 equivalent flow

Divide by the K factor (see table or extended list)
     
      Extended list




Step 2



Convert application pressure units
to P in psia
Add 14.7 to psig value
Step 3 Find the silicon orifice model number by matching the converted flow to the best value in the column for P

Note, if P isn't a table column convert to 20 Psig by multiplying flow by 34.7/P
           -

       

How to order Silicon orifices
 
       Dimensions        G series body     B series body    Tube Restrictors
For quotes or additional information   E-mail Us
Universal Microsystems