Velocity4000; blade style round butterfly
A motor actuated device used to maintain an (adjustable) constant pressure difference between two rooms in a ship or between one room and outdoors. for spring loaded device see control unit, air pressure, spring loaded (66597).
NSN 5998-01-553-1505
NSN 5855-00-151-3853
NSN 5999-00-243-9820
NSN 6610-00-898-4867
NSN 4140-00-343-2121
NSN 6645-01-615-8359
NSN 6620-01-263-6697
NSN 5895-00-490-5988
NSN 5985-01-053-8646
NSN 5915-00-696-5475
NSN 6620-00-193-9503
NSN 5975-01-499-9503