When necessary, should change lubricating oil, cleaning directional valve sliding local, or change the spring and directional control valve. ( 2) Reversing valve after long time use easy to manifest the tight sealing ring wear, the valve stem and valve core seat damage phenomenon, caused by gas leaks in the valve, valve action is not or can not be normal commutation failure quickly. The fault is divided into ordinary stem circuit fault and electromagnetic coil two categories. To this, should be seizing oil mist detector office is normal; Lubrication greasy viscosity if appropriate. For three things status should be cleaned before pilot valve and activities on the core of sludge and impurities. Q: directional valve category of common faults and maintenance way of answer: three-way reversing valve failure are: valve can not reversing or reversing action quickly, gas leak, such as electromagnetic pilot valve has some problem. ( 1) Directional valve can reverse or reversing action rapidly, is ordinary, spring stuck or destroyed, because of poor lubricating oil grease or impurity sticking sliding local comprised of actuating. Is to remove the plug, surveying coil resistance, if resistance is too big or too small, explained the electromagnetic coil has been destroyed, should be change. Seizing the available instrument of electromagnetic coil voltage, look to whether reach fixed voltage, if the voltage is too low, should further inspection system of inspection and control circuit in the power supply circuit and related travel switch. If the directional control valve under fixed voltage can not be normal commutation, joint should be seizing the electromagnetic coil ( Plug) Whether relaxation or exposure to false. 。 Before seizing circuit fault Marine valve, reversing valve will be first hand knob turning a few times, see the reversing valve in the norm of the atmospheric pressure whether can normal commutation, if can normal commutation, circuit is defective. At this point, we should change tightly closed circle, the valve stem and valve seat, or will the reversing valve. ( 3) If the electromagnetic pilot valve's inlet and exhaust eye by sludge impurities such as congestion, closed lax, activity is jammed, core circuit such as fault, all can cause directional valve can not be normal commutation. Notes to the order: The national standard) A, A: B: product name, model, nominal size medium and temperature, pressure range C: whether there is attachment, delivery time, and special requirements so that we can correct selection for you. Second, if the valve has been selected by design unit of our company model, please order according to the valves parameters directly with our sales center. Three, it is very important when you use the occasion or the environment is more complex, would you please provide design drawings and detailed parameters, our engineers experts will concentrate on review and analysis for you. We can provide you with professional solutions, including design, customization, complete, operation and service. We've been working on the valve leader in the field of industry, to provide you with the latest knowledge of the valve, the best service, best technical adviser. Thank you for visiting our website, if you have any questions, you can call us, we will be dedicated to provide you with quality services. The factory provides professional ball valve, butterfly valve, gate Industrial Valves, globe valve, check valve, relief valve, safety valve, Marine valve, oil valve, hydraulic control valve and other kinds of valves.
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