Profile: Tri-Tec Manufacturing is a manufacturer of fireseal valves, valve actuators, rod components and valve controllers. Our product line includes fireseal ventilation valve closures, computerized valve controllers, MOV electric valve actuators, hydraulic actuator motor manifold, Unitork hydraulic valve actuators, chlorine valve actuators and remote valve actuating gear. Our hydraulic actuator motor manifold provides crossport pressure limiting to protect the valve against excessive pressure which is translated into torque applied to the valve stem.