。 Normally open: pilot hole closed, when the coil current on the valve cavity by a piston booster orifice and reset spring of thrust, electromagnetic valve is closed. Normally closed: when energized coil, pilot valve core and off, open the guide hole, cavity pressure relief valve, piston, powered by inferior vena medium pressure solenoid valve open; When coil power, pilot valve core by spring reset, the guide hole closed, valve cavity by a piston booster orifice and reset spring of thrust, electromagnetic valve is closed. Q: ultra-low temperature principle of electromagnetic valve office recommend a: Industrial Valves core are stainless steel piston, piston ring manufacturing Marine valve with special low temperature resistance, abrasion resistance material; Piston and the valve cavity initiation not directly metal friction, infinite check valve installation direction. When the coil power, pilot valve core by spring reset, the guide hole open, cavity pressure relief valve, piston, powered by inferior vena medium pressure solenoid valve open. 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 valve, globe Industrial Valves, check valve, relief valve, safety valve, Marine valve, oil Industrial Valves, hydraulic control valve and other kinds of valves.
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