Through single-seat regulating valve by Industrial Valves body, valve seat, valve core, guide sleeve, Industrial Valves cover, stem and packing, etc. Parts. core and valve stem together. Connection methods can use interference fit taper pin or threaded connection pin fixation, can also the valve stem and valve power station valve core is one of the car. Between the cover and the body is equipped with guide sleeve, move up and down as the valve core play a guiding role. Guide sleeve holes, connect body cavity and the valve outlet. The guide sleeve cavity media easily through the holes into the valve outlet, will not affect the movement of the valve core. Through single-seat regulating Industrial Valves of the valve body only a valve core and a seat. Is characterized by low leakage, easy to guarantee the seal. There are external regulation and cutting off on structure. The difference lies in the shape of the valve core is different. The shape of the external regulation valve core as the plunger form; Cut off the shape of the valve core is flat or cone, it is another characteristic of the medium for valve core force is big, the unbalanced force is big, especially in the case of high pressure, large diameter is more serious, so only suitable for low pressure difference. Otherwise should choose appropriate thrust actuator, or with the valve locator. Through single-seat regulating valve valve core has a dress and the two types. When the valve core moves down, circulation area between valve core and valve seat is reduced, called a suit; The opposite is called reverse loading. Regulator of nominal size DN and DN marked the size of the valve seat diameter. For the nominal dimension DN< 2. 5 mm single pilot valve core, can suit can't reverse loading. So open reaction actuator must be used. Gas open regulator is increased as the signal pressure distribution area is also increasing; And gas closed type, on the other hand, along with the increase of pressure signal and reduce circulation area. Single-seat regulating valve is by regulating the body of electric actuators with different industrial field instrument, it takes 4 - regulator output 20 ma or pulse signal, for closed loop control, realize the parameters such as flow, pressure, temperature, liquid level automatic control, and can choose a kind of intelligent electric actuator, realize digital transmission, such as DCS, PLC, more intelligent control system. Electric regulator power supply voltage is 220 v and 380 v, two kinds of electric control valve flow characteristics such as percentage, such as linear and fast 3 kinds. Electric control valve compared with pneumatic control valve, energy saving, Only electricity when at work) , environmental protection, No carbon emissions) Fast installation, convenient, No need for complicated pneumatic pipe and pump stations) And other advantages, widely used in electric power, chemical industry, metallurgy, environmental protection, water treatment, light industry, building materials, such as industrial automation systems. Single-seat regulating valve of single film regulator and single piston valve, it was based on the compressed air as power source, the diaphragm or piston cylinder as actuator, and by means of electric valve positioner, converters, solenoid valve, a valve to drive the valve such as attachment, realize the switch quantity or proportion type adjustment, industrial automation control system receives the control signal to complete regulating the flow of pipeline medium, pressure, temperature and other process parameters. Pneumatic control valve is to control the characteristics of simple, quick response, and intrinsically safe, do not need another explosion protection measures. Pneumatic regulator is also relative to the cost of electric control valve, lower in chemical, petrochemical and other fields, pneumatic control valve with electric regulator incomparable advantages. Single-seat regulating valve structure is mainly divided into: single seater, sleeve, two-seat type, cage and so on four kind of structure. Main type single-seat regulating valve are divided into: tee, Angle type, high temperature, low temperature type, bellows type as several types.
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The resilient gate valve rising stem gate valve is an all-servo system capable of storing hundreds of resilient seal gate valve process parameters to provide custom os&y valve profiles for each cast iron gate valve type and resilient valve configuration.