Large Flow Capacity, yet Compact Size. Low Power Consumption. Suitable for Use in Vacuum Applications. 1 Valve, 6 Functions. (Universal Porting) Selective porting can provide 6 valve functions, such as N.C. valve, N.O. valve, Divider valve, Selector valve etc. Manifolded valve can be easily converted from N.C. normally closed to N.O. normally open merely by turning over the switch cover.