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 5835-01-187-8986
NSN 5895-01-657-1530
NSN 5855-01-233-2767
NSN 5920-01-256-0287
NSN 6145-00-099-8986
NSN 6685-01-492-3382
NSN 5925-00-951-5189
NSN 6130-01-205-1592
NSN 6150-01-097-3341
NSN 6105-01-277-2561
NSN 5895-01-152-7887
NSN 5965-01-332-1931