I The Mc Nally Institute 1986 S. Belcher Rd. I.D. Inside diameter. I.S.O. International standards organization.
Sets pump and seal standards for the metric community.
Impeller Attaches to the end of the shaft to impart energy to the fluid being pumped. Available in open, semi- open and closed designs. The center of the impeller or the point where fluid enters the impeller. Impeller setting Open impellers require a clearance between the volute or the pump back plate depending upon design. This clearance must be set when the pump is at operating temperature and must be reset to compensate for wear.