mail control valve

iec 60534-3_1 industrial process control valves - dimensions

Ngày tải lên : 25/12/2013, 11:08

22
805
5

Control valve handbook

Ngày tải lên : 01/01/2014, 18:55

298
358
13

Valve điều khiển áp suất: Pressure control valve

Ngày tải lên : 08/01/2014, 01:45

... đồng đều. Valve này chia làm ba phần: 1- Phần thân vỏ valve với lõi con trượt (tương đối giống như valve phân phối thông thường). Dưới đây là hình ảnh so sánh sự khác nhau của lõi valve điện ... chế ở một số chức năng nhất định. hydraulics.vn Van nút (Plug Valve)

12
1.7K
18

Control valves tuning

Ngày tải lên : 12/03/2014, 16:34

... TUNING Page 1 of 13 Control Valves and Tuning Table of Contents Control Valves AND TUNING 1 Control Valves AND TUNING 2 RELATIONSHIP OF MAJOR COMPONENTS 2 Control Valve Bodies 2 Control - Valve Actuators ... INTERACTING CONTROL LOOPS 11 DEFAULT CONTROLLER TUNING PARAMETERS 11 CONTROL LOOP SCAN RATES 12 PID ALGORITHM DEFAULT TUNING CONSTANTS 13 Berry’s Commissioning Handbook CONTROL VALVES AND ... Handbook CONTROL VALVES AND TUNING Page 2 of 13 CONTROL VALVES AND TUNING Selecting the proper control valve for each application involves many factors. The valve body design, actuator, style, and...

13
695
0

control valves hanbook

Ngày tải lên : 14/03/2014, 19:43

... final control element must implement the strategy selected by the controller. The most common final control element in the process control industries is the control valve. The control valve manipulates ... point. Many people who talk about control valves or valves are really referring to a control valve assembly. The control valve assembly typically consists of the valve body, the internal trim parts, an ... 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 generally...

295
463
1

CONTROL VALVE HANDBOOK Fourth Edition ppt

Ngày tải lên : 29/03/2014, 08:20

... 0.46 Valve B VALVE ACTION / OPENING 2 5.61 7.74 VALVE ACTION / CLOSING −2 0.46 1.67 VALVE ACTION / OPENING 5 1.14 2.31 VALVE ACTION / CLOSING −5 1.04 2 VALVE ACTION / OPENING 10 0.42 1.14 VALVE ... 1.14 Valve C VALVE ACTION / OPENING 2 4.4 5.49 VALVE ACTION / CLOSING −2 NR NR VALVE ACTION / OPENING 5 5.58 7.06 VALVE ACTION / CLOSING −5 2.16 3.9 VALVE ACTION / OPENING 10 0.69 1.63 VALVE ... a control valve for present conditions and then replace the valve when conditions change. When selecting a valve, it is important to consider the valve style, inherent characteristic, and valve...

297
746
0

Fisher ® Pulp and Paper Solutions Reliable control valve technologies for on-specification product. pptx

Ngày tải lên : 01/04/2014, 00:20

... through control valves, but it may also cause material damage, excessive noise, and high vibration. This material damage can severely affect the control valve s operability and overall control ... envelope package size for tight spaces. Fisher V150 Vee-Ball ™ control valve, FieldQ ™ actuator, and FIELDVUE DVC2000 digital valve controller Fisher ® Pulp and Paper Solutions | 27 In the power ... following literature: http://www.YouTube.com/user/FisherControlValve http://www.Twitter.com/FisherValves http://www.Facebook.com/FisherValves http://www.LinkedIn.com/groups/Fisher-3941826 “Fisher ® ...

32
449
0

IEC 60534 6 1 industrial process control valves mounting details for attachment of positioners

Ngày tải lên : 04/04/2014, 11:29

... ``````-`-`,,`,,`,`,,` 60534-6-1 © IEC:1997 – 7 – INDUSTRIAL-PROCESS CONTROL VALVES – Part 6: Mounting details for attachment of positioners to control valves – Section 1: Positioner mounting on linear actuators 1 ... positionneurs sur les actionneurs linéaires Industrial-process control valves – Part 6: Mounting details for attachment of positioners to control valves – Section 1: Positioner mounting on linear actuators ... positionneurs sur les actionneurs linéaires Industrial-process control valves – Part 6: Mounting details for attachment of positioners to control valves – Section 1: Positioner mounting on linear actuators Numéro...

40
627
0

IEC 60534 6 2 industrial process control valves mounting details for attachment of positioners

Ngày tải lên : 04/04/2014, 11:29

... ``````-`-`,,`,,`,`,,` 60534-6-2 © IEC:2000 – 5 – INDUSTRIAL-PROCESS CONTROL VALVES – Part 6-2: Mounting details for attachment of positioners to control valves – Positioner mounting on rotary actuators 1 Scope This ... proportional to the control valve travel. b) This standard also covers the direct connection between the positioner feedback and the shaft (or its axial extension) of a rotary control valve. In such ... ELECTROTECHNICAL COMMISSION –––––––––––– INDUSTRIAL-PROCESS CONTROL VALVES – Part 6-2: Mounting details for attachment of positioners to control valves – Positioner mounting on rotary actuators FOREWORD 1)...

20
419
0

IEC 60534 7 industrial process control valves data sheet

Ngày tải lên : 04/04/2014, 11:30

... Handling Services 534-7 O IEC -7- INDUSTRIALPROCESS CONTROL VALVES Part 7: Control valve data sheet 1. Introduction The writing of control valve specifications is an extremely important segment ... tioners to control valve actuators. Part 7: Control valve data sheet. Part 8: Noise considerations. Section One - Lab- oratory measurement of noise generated by aerodynamic flow through control ... dimensions for flanged, two-way, globe-type control valves. Section Two - Face-to-face dimensions for flangeless control valves except water butterfly valves. Part 4: Inspection and routine...

38
584
0

IEC 60534 8 1 industrial process control valves noise considerations

Ngày tải lên : 04/04/2014, 11:31

... levels radiated by control valves and/or associated piping con- figurations, including ked restrictions, through which compressible fluids are passing. Note. - Control valves discharging ... régulation Industrial-process control valves Part 8: Noise considerations Section One - laboratory measurement of noise generated by aerodynamic flow through control valves O CE1 1986 Droits ... test travel 14) Pressure differential ratio factor of a control valve without attached 15) Pressure differential ratio factor of a control valve with attached fittings, 16) Piping geometry factor,...

21
392
0

IEC 60534 8 2 industrial process control valves noise considerations

Ngày tải lên : 04/04/2014, 11:32

... : 1987, Industrial-process control valves - Part 7: Control valve terminology and general considerations. IEC 534-2-3: 1983, Industrial-process control valves - Part 2: Flow capaclw ... radiated from the control valve itself and the noise generated by the valve but radiated from the associated piping system. The test data are expressed as sound pressure levels of the valve under ... characteristic pressure ratio factor xFz of a control valve; b) to predict valve noise for given process conditions; c) to compare the performance of different valves; d) to plan measures for increasing...

37
464
1

IEC 60534 8 3 control valve aerodynamic noise prediction method

Ngày tải lên : 04/04/2014, 11:33

... 22 1 CE2 p p = (6) 5.2 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 ... are not used in this standard. Table 2 – Typical values of valve style modifier F d (full size trim) Relative flow coefficient ΦΦ Valve type Flow direction 0,10 0,20 0,40 0,60 0,80 1,00 Globe, ... 1 12 L 2 =− − (1) NOTE 1 This equation is the definition of F L for subsonic conditions. NOTE 2 When the valve has attached fittings, replace F L with F LP / F p . NOTE 3 The factor F L is needed...