Profile: Tech Development is a provider of mechanical and pneumatic products. We are an ISO 9000 certified company. Our products include TurboTwin™ & TurboStart™ engine air starters, turbine powered air motors, TurboValve™ relay valves, TechTorque™ inertia drives and jet engine propulsion simulators. Our TurboValve is a versatile, pilot-operated starting air or control relay valve used for the installation of TurboTwin air starters. Our TurboValve Plus is a completely integrated relay valve with solenoid that dramatically streamlines the installation process of TurboTwin air starters and is used as a starting air valve or a relay control valve.