Hydronamic Engineering is a manufacturer of check valves, auto shutoff valves, and flow restrictors for the water treatment industry. Our products are designed for use in reverse osmosis drinking water systems up to 50gpd. Highly focused in the area of valves--brass, plastic, and stainless steel--our strength is in offering solutions through new and innovative product design and development. Each product is individually tested for function and performance to ensure compliance with our high quality standards. Most products are in-stock items enabling shipment within 24 hours.