A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.
NSN 2925-00-312-8568
NSN 5855-00-962-5792
NSN 6240-00-491-0517
NSN 5915-01-633-9845
NSN 5925-00-451-2061
NSN 5935-01-050-8417
NSN 5985-01-148-1047
NSN 5895-00-370-3136
NSN 5998-01-148-2334
NSN 6685-01-477-7955
NSN 6320-00-270-8222
NSN 7035-01-270-0325