Flomatic Corporation introduces a new 1” & 1¼” Model 80DI VFD patented submersible pump check valve for use with variable-frequency drive (VFD) control submersible pumps. Standard check valves “chatter” when a VFD goes to low flow, causing premature wear and eventual failure. This unique valve is designed to minimize flow losses and hydraulic shocks in the pumping system. It features a standard epoxy coating (NSF® approved powder) ductile iron body to support deep set pumps. All internal parts are made from corrosion-resistant materials and have a high strength durable design. For more information, visit www.flomatic.com, email flomatic@flomatic.com or call 800-833-2040.