Check and foot valves from Grainger can prevent backflow into sump disposal lines, wastewater lines, sewage lift stations, ejector systems and more. Choose from a variety of sizes. Check valves, used in combination with piston, diaphragm and metering pumps, commonly use ball check valves that combine balls and seats in the same valve body and help to ensure leak-free shutoff. Get your check and foot valves from Grainger today.