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 5950-00-286-3301
NSN 5915-01-432-2491
NSN 5855-00-631-4565
NSN 6130-01-042-4949
NSN 6645-00-145-6411
NSN 6150-00-770-9474
NSN 5835-00-135-4566
NSN 6105-01-271-9696
NSN 6685-01-109-7208
NSN 5996-01-137-2927
NSN 6650-01-542-9495
NSN 6240-00-300-2736