hydraulic control valve operators

... control valve assembly components Whether it is called a valve, control valve or a control valve assembly is not as important as recognizing that the control valve is a critical part of the control ... range of valve travel over which a control valve can maintain the installed valve gain between the normalized values of 0.5 and 2.0 Control Valve: (See Control Valve Assembly.) Control Valve Assembly: ... ensure that the control valve is not the weakest link Following are definitions for process control, sliding-stem control valve, rotary-shaft control valve, and other control valve functions...

Ngày tải lên: 01/01/2014, 18:55

... lệ Valve phân phối tỷ lệ: Valve chia làm ba phần: 1- Phần thân vỏ valve với lõi trượt (tương đối giống valve phân phối thông thường) Dưới hình ảnh so sánh khác lõi valve điện tỷ lệ (bên phải) valve ... sử dụng valve valve thường đóng NC để làm thay đổi áp suất làm việc hai nhánh làm việc khác Tức có áp suất chênh hai nhánh làm việc hệ thống gây valve Khác với valve an toàn, cửa dầu valve (cửa ... valve đặt 50 bar cho xy lanh B Do valve phân phối bắt đầu cấp dầu, xy lanh A thò kẹp chi tiết trước kẹp rồi, áp suất hệ thống tăng lên 50 bar mở để xy lanh B xuống 3- Valve giảm áp: Được ví valve...

Ngày tải lên: 08/01/2014, 01:45

... control valve assembly components Whether it is called a valve, control valve or a control valve assembly is not as important as recognizing that the control valve is a critical part of the control ... range of valve travel over which a control valve can maintain the installed valve gain between the normalized values of 0.5 and 2.0 Control Valve: (See Control Valve Assembly.) Control Valve Assembly: ... ensure that the control valve is not the weakest link Following are definitions for process control, sliding-stem control valve, rotary-shaft control valve, and other control valve functions...

Ngày tải lên: 29/03/2014, 08:20

... facilities FIELDVUE™ digital valve controllers installed on Fisher control valves protect your assets by giving a view of operating characteristics such as supply pressure, control signal, friction, ... Fisher V150 Vee-Ball control valve, FieldQ actuator, and FIELDVUE DVC2000 digital valve controller ™ ™ Fisher® Pulp and Paper Solutions | 11 Cooking Digester Liquor Level Control Continuous digester ... http://www.Facebook.com/FisherValves http://www.YouTube.com/user/FisherControlValve http://www.Twitter.com/FisherValves http://www.LinkedIn.com/groups/Fisher-3941826 © 2012 Fisher Controls International...

Ngày tải lên: 01/04/2014, 00:20

... International Standards IEC 60534 (all parts), Industrial-process control valves IEC 60534-1, Industrial-process control valves Part 1: Control valve terminology and general considerations Definitions ... p 2CE = 5.2 p1 22 (6) Regime definition A control valve controls flow by converting potential (pressure) energy into turbulence Noise in a control valve results from the conversion of a small ... of IEC 60534 make use of the valve sizing factors as used in IEC 60534-1 and IEC 60534-2-1 In the usual control valve, little noise travels through the wall of the valve The noise of interest...

Ngày tải lên: 04/04/2014, 11:33

... control valve assembly components Whether it is called a valve, control valve or a control valve assembly is not as important as recognizing that the control valve is a critical part of the control ... range of valve travel over which a control valve can maintain the installed valve gain between the normalized values of 0.5 and 2.0 Control Valve: (See Control Valve Assembly.) Control Valve Assembly: ... ensure that the control valve is not the weakest link Following are definitions for process control, sliding-stem control valve, rotary-shaft control valve, and other control valve functions...

Ngày tải lên: 07/08/2014, 12:22

... BUTTERFLY VALVE W6213/IL W5477/IL ECCENTRIC DISK VALVE CONTOURED DISK BUTTERFLY VALVE Figure 1-14 Typical Rotary-Shaft Control Valve Constructions 14 Chapter Introduction to Control Valves Ball, ... power unit to the valve Rotary-Shaft Control Valve Terminology The definitions that follow apply specifically to rotary-shaft control valves Actuator Lever: Arm attached to rotary valve shaft to ... of components should be called the valve body assembly Valve Body Assembly (Commonly Valve Body or Valve, more properly Valve Body Assembly): An assembly of a valve, bonnet assembly, bottom flange...

Ngày tải lên: 07/08/2014, 12:22

... 5.49 ENTECH SPEC 4” VALVE SIZE Valve A (Fisher V150HD/1052(33)/3610J) Valve B Valve C VALVE ACTION / OPENING 4.4 VALVE ACTION / CLOSING −2 NR NR VALVE ACTION / OPENING 5.58 7.06 VALVE ACTION / CLOSING ... butterfly valve compared to a line-size globe valve The globe valve has a much wider control range than the butterfly valve Other valve styles, such as V-notch ball valves and eccentric plug valves ... conditions 39 Chapter Control Valve Performance 40 Chapter Valve and Actuator Types Control Valves The control valve regulates the rate of fluid flow as the position of the valve plug or disk is...

Ngày tải lên: 07/08/2014, 12:22

... Capacity skirt projections to control low flow rates (figure 3-3, right view) Restricted-Capacity Control Valve Trim Most control valve manufacturers can provide valves with reduced- or restricted-capacity ... operation and good manual control is still necessary (figure 3-37) They are often used to actuate the bypass valve in a three -valve bypass loop around control valves for manual control of the process ... Guiding: Valve plug is aligned by the valve body port This construction is typical for control valves using small-diameter valve plugs with fluted Chapter Valve and Actuator Types CAGE GASKET...

Ngày tải lên: 07/08/2014, 12:22

... Chapter Control Valve Accessories equipped with a digital controller Most importantly, it allows two-way communication for process, valve, and instrument diagnostics Users purchase digital valve controllers ... entire control valve assembly Using the valve stem travel feedback, actuator pressure sensor and other sensors on the instrument, the health of the control valve can be evaluated while the valve ... process Chapter Control Valve Selection Control valves handle all kinds of fluids at temperatures from the cryogenic range to well over 1000_F (538_C) Selection of a control valve body assembly...

Ngày tải lên: 07/08/2014, 12:22

... 20.88 406 737 16.00 29.00 89 Chapter Control Valve Selection DN Chapter Control Valve Selection Face-to-Face Dimensions for Screwed-End Globe-Style Control Valves Classes 150, 300 and 600 (Dimensions ... 432 17.00 Chapter Control Valve Selection Face-to-Face Dimensions for Flangeless, Partial-Ball Control Valves Classes 150, 300 and 600 (Dimensions in accordance with ISA S75.04) VALVE SIZE CLASSES ... 45.00 −−− −−− 1727 −−− 68.00 −−− −−− −−− −−− Chapter Control Valve Selection 88 Face−to−Face Dimensions for Buttweld−End Globe−Style Control Valves Classes 150, 300, 600, 900, 1500 and 2500 (Dimensions...

Ngày tải lên: 07/08/2014, 12:22

... Fisher Controls International LLC Trademark of Union Carbide Control Valve Flow Characteristics The flow characteristic of a control valve is the relationship between the flow rate through the valve ... Minimum Load ∆P Quick Opening 109 Chapter Control Valve Selection Flow Control Processes FLOW MEASURE− MENT SIGNAL TO CONTROLLER LOCATION OF CONTROL VALVE IN RELATION TO MEASURING ELEMENT BEST ... Equal Percentage Equal Percentage When control valve closes, flow rate increases in measuring element Valve Sizing Standardization activities for control valve sizing can be traced back to the...

Ngày tải lên: 07/08/2014, 12:22

... 12 Valve Style V−Notch Ball Valve High Performance Butterfly Valve 16 V−Notch Ball Valve High Performance Butterfly Valve Degrees of Valve Opening Cv FL XT FD 60 90 ... 0.40 0.23 0.92 1.00 Chapter Control Valve Selection 128 Representative Sizing Coefficients for Rotary Shaft Valves (continued) Valve Size (inches) Chapter Control Valve Selection Total force ... in following tables 133 Chapter Control Valve Selection Typical Rotary Shaft Valve Torque Factors V−Notch Ball Valve with Composition Seal VALVE SIZE, INCHES VALVE SHAFT DIAMETER, INCHES Composition...

Ngày tải lên: 07/08/2014, 12:22

... Conditioning Valves Equipment: Equipment: HP Turbine Bypass Steam Valves HP Turbine Bypass Control and Water Isolation Valves EHS Electrohydraulic System− Electrical Control Logic Hydraulic Control ... Power System Hydraulic Power Unit Control Cabinet Piston Actuators and Proportional Valves LP Turbine Bypass Steam Valves LP Turbine Bypass Water Valves LP Turbine Bypass Steam Stop Valves (optional) ... turbine bypass valves, turbine bypass water control valves, and the electro -hydraulic system Turbine Bypass Valves Whether for low-pressure or high-pressure applications, turbine bypass valves are...

Ngày tải lên: 07/08/2014, 12:22

... S75.01, Flow Equations for Sizing Control Valves S75.02, Control Valve Capacity Test Procedures S75.03, Face-to-Face Dimensions for Flanged Globe-Style Control Valve Bodies (Classes 125, 150, 250, ... Dimensions for Flanged Globe-Style Control Valve Bodies (Classes 900, 1500, and 2500) S75.17, Control Valve Aerodynamic Noise Prediction S75.19, Hydrostatic Testing of Control Valves S75.20, Face-to-Face ... and End-to-End Dimensions of Valves (see ISA standards for dimensions for most control valves) Spec 6D, Specification for Pipeline Valves (Gate, Plug, Ball, and Check Valves) B16.24, Cast Copper...

Ngày tải lên: 07/08/2014, 12:22

... 0.03 max Ni Remainder Valve Materials Properties for Pressure−Containing Components (The material codes in this table correspond to the previous Standard Specifications for Valve Materials listing.) ... Engineering Data Valve Materials Properties for Pressure−Containing Components (continued) (The material codes in this table correspond to the previous Standard Specifications for Valve Materials ... Engineering Data Valve Materials Properties for Pressure−Containing Components (continued) (The material codes in this table correspond to the previous Standard Specifications for Valve Materials...

Ngày tải lên: 07/08/2014, 12:22

Ngày tải lên: 07/08/2014, 12:22

Ngày tải lên: 07/08/2014, 12:22

... sizes through 12 also apply to Class 150 cast copper alloy flanges These diameters apply to steel valves for nominal pipe sizes through 24 Nominal pipe sizes thorough also apply to Class 300 cast ... sizes through 12 also apply to Class 150 cast copper alloy flanges These diameters apply to steel valves for nominal pipe sizes through 24 Nominal pipe sizes through also apply to Class 300 cast ... −−− 48 2.75 −−− −−− 4.00 −−− −−− −−− −−− −−− −−− −−− −−− −−− −−− These dimensions apply to steel valves for nominal pipe sizes through 24 7.94 Chapter 11 Pipe Data 254 American Pipe Flange Dimensions...

Ngày tải lên: 07/08/2014, 12:22

... Double-acting, 64 electro -hydraulic, 63 piston, 63 Double-acting actuator, 16 Double-ported valve, 11 Double-ported valve body, 44 Dynamic gain, 28 Dynamic unbalance, 16 Eccentric-disk control valve body, ... 199 High-capacity valve body, 44 High-performance butterfly control valve, 45 Large flow valve body, 148 Length Equivalents, 263 Limit switches, 68 cam-operated, 71 High-pressure valve body, 43 ... Low-flow control valve, 148 Low-recovery valve, 17 Ingress protection (IP) codes, 188 Inherent characteristic, 4, 31 Inherent diaphragm pressure range, 17 Lower valve body, 10 Inherent valve characteristic,...

Ngày tải lên: 07/08/2014, 12:22