Adjustable valve can through the downstream outlet pressure and along with the change of it up or down its own small valve port, thus changes the diaphragm ( The piston) Upper stem pressure chamber, restrict the adjustment of the valve disk position. On the basis of using the form of different, can successfully reduce the pressure regulator, pressure holding pressure slowly-closing check and cutting quickly ( Roughly similar to solenoid valve) , and other functions. Hydrodynamic stem valve principle a: q: hydrodynamic stem valve is a hydraulic valve stem, it consists of a main valve and set the catheter, pilot valve, needle valve, ball valve and pressure gauge, etc, it with the medium pressure pipe itself as a power source, opening and closing, adjust. Hydrodynamic stem valves according to the structure can be divided into two categories, the diaphragm and piston, office principle is the same, is more than the downstream pressure difference delta P, by the pilot valve stem, make diaphragm ( The piston) Hydrodynamic semi-automatic hydraulic differential operation, the absolute by adjustment, and therefore make full of the main valve disc paper or absolute closed or in the condition adjustment. 。 When entering the diaphragm ( The piston) Upper stem indoor pressure downstream of the water is discharged into atmosphere, or low pressure area, utility under the Marine valve at the bottom of the valve plate and diaphragm pressure value is greater than at the top of the pressure value, so the main Industrial Valves disc to rev. The location of the full paper; When entering the diaphragm ( The piston) Upper stem indoor pressure downstream of the water can not be discharged into atmosphere, or low pressure zone, utility in the diaphragm ( The piston) At the top of the pressure value is greater than at the bottom of the pressure value, so will reduce the pressure of the main valve disc to the absolute closed position; When the diaphragm ( The piston) Upper stem indoor pressure value in the inlet pressure and outlet pressure halfway, the main valve disc is in adjustment, adjust the position is determined by the needle valve in the duct system and adjustable pilot valve to the conjugate. 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 Industrial Valves, butterfly valve, gate valve, globe valve, check valve, relief valve, safety valve, Marine valve, oil valve, hydraulic control valve and other kinds of valves.
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