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 6685-01-386-8521
NSN 5920-01-013-8594
NSN 5920-00-817-2831
NSN 5905-00-389-6252
NSN 5895-00-659-8434
NSN 5835-01-470-3337
NSN 5965-01-479-3503
NSN 2925-01-069-5324
NSN 5996-01-618-2638
NSN 5975-00-964-4510
NSN 6220-01-492-5018
NSN 7035-01-145-5059