Temperature Changes – A significant change in temperature can also be a cause for damaged solenoid valves. Be sure to check the pressure tolerances of all parts of your irrigation system before installing them. Installing an irrigation filter upstream will help prevent sediment reaching your valves, as will installing your valve vertically.Įxcess Water Pressure – If the water pressure running through your irrigation system exceeds the pressure that your solenoid valve can handle, it will lead to the solenoid valve being ruptured, and in some cases, a larger section of your irrigation system needing to be replaced. Apart from damage to the system itself, sediment will prevent movement within the valve, causing the system to overheat, damaging the components within the valve. Sediment Damage – Although uncommon, small amounts of sediment can get into your solenoid valve and cause significant issues.
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Your irrigation contractor or irrigation supply store can advise you on the best way to keep your solenoid valves dry and free from moisture, including a high quality irrigation valve box. Some solenoid valves come with basic o-rings to help create watertight seals, however, better protection may be required for outdoor or damp environments. This can be mitigated by using a suitable DIN connector to protect vulnerable electrical points. Liquid Contact – As this is an electrical device, direct contact with water or other liquids can completely short out the coil, requiring a new coil instantly. A burnt out coil cannot be repaired and you’ll need a replacement solenoid coil, so it’s essential to make sure that when you are installing a solenoid valve, the voltage allowance matches the voltage output of your irrigation system.īy installing electrical surge protection, you have an added safety against spikes in voltage that can be caused by things like lightning and static electricity. Incorrect Voltage – An excessive voltage running through your solenoid valve can easily burn and short it out.
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Some of the common causes of solenoid valve failure include Solenoid valve failures are caused by either the failure of the electromagnetically inductive coil, or the failure of the valve itself. This system is far more versatile and uses magnets, unlike NO and NC valves, which use springs. Bi-Stable Solenoid Valve – This type of valve has no defined unpowered state, and can be toggled between open and closed states.This type of valve is commonly seen where water flows the majority of the time and only closes when needed. Normally Open Solenoid Valve – A normally open solenoid valve is the inverse of a NC solenoid valve, and allows water to flow when unpowered.Normally Closed Solenoid Valve – A normally closed solenoid valve is a valve that is closed in its unpowered state.
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These solenoid valves are further classified into different types, the normally closed (NC) solenoid valve, the normally open (NO) solenoid valve, or the Bi-stable solenoid valve. These valves are used to open, close, distribute, or mix liquids, such as in fertigation systems.
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How Do You Diagnose A Faulty Solenoid Valve?.