A good starting point is the series
number. A normal capacity in cubic Feet per minute or CMH at inlet condition is
discharged by number that follow V series. Actual capacity of given pump is
service depends, of cource on service factor. VC is V type Conical pump. One is
the vacuum range in which it will be used most , a VACCOMP Type V vacuum pump
can be furnished with specialized characteristics. Configration can be idealized
for a particular range.