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 5895-01-033-5620
NSN 6130-01-390-5612
NSN 5985-01-361-8617
NSN 5960-00-289-6591
NSN 6685-01-398-9807
NSN 5999-01-500-5371
NSN 6610-01-418-5787
NSN 6650-00-098-6128
NSN 6650-00-970-5598
NSN 5950-01-164-7778
NSN 5895-00-609-7654
NSN 6645-01-565-0567