Air maintenance device is an automatic, field-adjustable, pressure reducing device. It is used to maintain a predetermined air or nitrogen pressure in a dry pipe sprinkler system, preaction system, or dry pilot line system of deluge or preaction valve.
Available size
Inlet
Outlet
Standard valve components
Other accessories
Max inlet pressure
Ref. No.
1/2″ NPT, from compressed air supply
1/2″ NPT, to system
Air control valve, strainer, pressure regulator, Restrictor check valve, By-pass valve
Carbon steel nipple, malleable iron tee, elbow, union, etc.