Torpedo Reservoir



Voss was contacted by a major defense contractor to bulge form a part for a pressurized accumulator or reservoir for the Mk-50 torpedo. 

Voss successfully bulge formed the reservoir "elbow" where other manufacturing attempts had failed, and began supplying the part to the customer. But when Voss engineers inquired into how this part was being used, they realized that Voss, with our diverse manufacturing capabilities, could also perform nearly all subsequent manufacturing steps as well.

This saved the customer many additional steps, time and money.

Voss was able to bulge form this critical part where others had failed. This was the original part contracted for by the customer.


The part began as a 8 x 15-3/4 x 0.090 inch sheet of 17-4PH material rolled to near tubular shape.

The rolled piece is then seam welded to form a 5-inch diameter tube.

The tube is bulge formed to produce this angled tube within very critical dimension. The tube ends are cut away at an angle to compete the part shown at the top of the page.

After first supplying only the bulge formed "angle", Voss began manufacturing other parts that made up the final assembly, including this machined end bell.

All bulge-formed, machined and stamped parts are welded together to form this weldment. But Voss could still do more.

Special sound insulation was added by the Voss paint department and heater strips are also installed by Voss. The reservoir is now complete.