TeacherGeek plastic 1/8-inch check valve components allow fluid to pass in one direction. Designed to fit to 1/8 inch vinyl tubing, these transparent, durable components are a necessary addition to any STEM | STEAM hydraulic or pneumatic project. Pairs easily with vinyl tubing, project cylinders and tee connectors. 

Pump Materials: (2) check valves, tubing, (1) cylinder and (1) tee connector.