Abstract: A tombstone assembly within a vessel utilizes disk control valves for conlling the flow of seawater to torpedo tubes. The disk control valves have disks abutting flow ports on a vertical plate within a tombstone. The vertical plate separates an impulse chamber from a plurality of tube chambers. The tube chambers hold the torpedo tubes. The disks control the flow of seawater between the impulse chamber and the tube chambers. The seawater is initially pumped from outside the vessel through a water cylinder into a lower impulse tank then into the impulse chamber of the tombstone. The disk valves then control the flow of the seawater to the tube chambers.

Abstract: A noise and shock reducing assembly are provided. When used as part of a k valve assembly, the present invention includes a disk and a valve plate with a valve orifice passing therethrough. A perforated bellows is disposed about the valve orifice between the disk and the valve plate. An actuator moves the disk linearly with respect to the valve plate in one of a first direction and a second direction to cause compression or expansion of the bellows. The restrictive flow path presented by a combination of the folded side walls of the bellows and the perforations therein provide for a gradual increase or decrease in downstream pressure and flow during the opening or closing of the valve.