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 6620-01-461-3550
NSN 5910-00-929-3280
NSN 5965-01-245-6585
NSN 6620-01-332-0623
NSN 2925-00-928-5931
NSN 5998-01-012-0491
NSN 5945-00-395-2572
NSN 6685-00-892-1712
NSN 7035-01-485-0269
NSN 6130-00-038-8274
NSN 6320-00-466-0371
NSN 5915-01-592-8055