liquid ring vacuum pumps
applications
How it works:
two-stage liquid ring vacuum pump, flat sided (axial distribution) (Travaini)
single stage liquid ring vacuum pump, radial distribution (Alstom, Bell,...)
NASH 904 Vacuum Pump.
The NASH 904 replaced the popular NASH CL pump in the 1980's.
This 904 pump can be found in major industries, including Paper, Chemical, and Mining.
double lobe:
2 complete cycles (inlet, compression, discharge) for each revolution.