Fluid Dynamic Siphons, Inc. is a leading manufacturer and distributor of automatic dosing siphons, offering a broad product line featuring the best designs and highest quality materials. Our dosing siphons are designed to make soil absorption systems more effective and long-lived, and are used in septic systems, sand filtering systems, drain pipe scouring, and small disposal plants. With over 40 years of experience, we provide custom siphon sizes and design solutions to meet specific customer needs. Our siphons are made from durable polyethylene, are easy to install, and require no electricity.