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 5999-01-648-1552
NSN 6135-00-891-4944
NSN 5990-01-326-9862
NSN 5999-01-281-6993
NSN 5950-01-265-0328
NSN 5998-01-258-8795
NSN 6685-01-514-7450
NSN 5975-01-003-7496
NSN 7035-01-504-2204
NSN 4140-01-267-9874
NSN 5910-01-183-6695
NSN 5855-01-497-0467