Quick Answer
Signs of air leaks in jet pump suction lines include a decrease in water flow, increased pressure drop, and a characteristic "gurgling" or "hissing" sound when water is being drawn. These symptoms often occur when the pump is first started, and the noise may subside as the pump runs.
Identifying Air Leaks
Air leaks in jet pump suction lines can be caused by improper connections, worn-out gaskets, or damaged pipes. Inspect the connections at the jet pump, well casing, and any adapters or unions for signs of leakage. Check for mineral deposits, corrosion, or loose connections that may be allowing air to enter the system.
Diagnosing Air Leaks
To diagnose air leaks, listen for the characteristic sound of air entering the system when the pump is first started. Use a submersible pump gauge or a pressure gauge to measure the pressure drop across the pump. Compare the pressure reading to the specified pressure drop for your jet pump. If the pressure drop is excessive, it may indicate an air leak.
Repairing Air Leaks
Repairing air leaks typically involves tightening loose connections, replacing worn-out gaskets or O-rings, and cleaning mineral deposits or corrosion from the connections. Use a gasket sealant or pipe dope to ensure a watertight seal. Consider using a pipe plug or a threaded adapter to replace any damaged or corroded pipe sections.
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