Case Studies—Semi-Closed Pipeline Systems, Orange Cove and Solano Irrigation Districtsby James C. Chandler, Orange Cove Irrigation District, Orange Cove, CA, USA,
Document Type: Proceeding Paper
Part of: Planning, Operation, Rehabilitation and Automation of Irrigation Water Delivery Systems
The Harris Float Valve is a simple mechanically leveraged valve connected to a float, which activates the valve with the rise and fall of the water surface on the down stream side of the valve within a stand pipe. The delivery systems in the Orange Cove Irrigation District are about thirty-five years old. The Harris Float Valves have operated relatively maintenance free for the first twenty-five years. Then, mainly due to wear in the hinge points, parts and sometimes valves had to be replaced. The Orange Cove and Solano Irrigation Districts have encountered certain problems and have corrected most to provide a more dependable operation. One of the most critical is proper installation. Another important aspect is to use a large stand and float made of styrofoam or other water resistant material. Pin wear in the brass valves has also been a problem. Another important aspect associated with the use of float valves is that the water needs to be free of debris or trash.
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