Meggitt Control Systems designs and develops aerospace components such as pressure-regulating valves for aircraft systems. The Meggitt Clinic team was tasked with redesigning an environmental control system pressure regulator subassembly to address known failure modes. The team was encouraged to pursue novel designs, and three promising alternatives were built utilizing innovative configurations of bellows, levers and diaphragms to regulate pressure. The team evaluated designs based on test data and metric performance, and recommended a final design for Meggitt to pursue.