Figure 1. CAD Model of Triple Valve Credit: Penn State Expand Figure 2. Triple Valve Fail-Safe Brake System Model (K-Type Triple Valve Donated by Steamtown National Historic Site) Credit: Penn State Expand Figure 3. Students Belles and Giardina Presenting Final Project Credit: Penn State Expand Figure 4. Students Ballish, Belles and Giardina Demonstrating Final Project Credit: Penn State Expand