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 5985-00-774-0317
NSN 6320-00-456-2092
NSN 6685-00-168-0256
NSN 2925-01-100-3694
NSN 4140-01-024-9414
NSN 5996-00-915-3164
NSN 6650-01-345-8174
NSN 5985-01-648-6390
NSN 5975-00-128-7916
NSN 5835-01-101-7569
NSN 5910-01-597-5475
NSN 6130-01-475-0140