Abstract: A mounting bolt and sacrificial anode assembly is provided. The zinc anode is cylindrical while the mounting bolt is made from aluminum alloy and is machine threaded with an anodized bolt head resting on an anodized bolt head shoulder having two faces with one face being non-anodized. For assembly, the anode is heated to a uniform temperature of approximately two hundred degrees Fahrenheit and the mounting bolt is cooled to approximately zero degrees Fahrenheit after a minimum of six hours and preferably twenty-four hours. The anode is then hand pressed onto the mounting bolt to bottom out on the non-anodized face in order to form a single fused assembly.

Abstract: A method is taught to alleviate some of the expected seawater corrosion of aluminum alloy fuel tanks originating from the chlorides present in seawater through the use of a dicarboxylic acid additive that is added to the aluminum alloy fuel tank when seawater enters the tank.

Abstract: There is disclosed a two-way valve which includes dual valve plates to be sitioned between first and second chambers having varying pressure therein, to relieve excess pressure in either chamber by permitting fluid flow from one chamber to the other. The valve includes a body portion having disposed therein dual valve plates. In the equilibrium state, the first valve plate is spring biased against the valve body in the direction of the first chamber to seal off any flow through the valve. The second valve plate is separately spring biased against the first valve plate in the direction of the second chamber, sealing off flow between the valve plates. When the pressure of the first chamber is greater than the pressure of the second chamber by a predetermined amount, the first and second valve plates move away from the valve body permitting fluid flow from the first chamber to the second chamber.