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Azbil Corporation

12

4.5 Adjustment of Positioner

For details on positioners, refer to the user’s manuals below.
• Pneumatic single-acting valve positioner (model HTP):

document

No.

OM2-8310-0200

• Pneumatic single-acting valve positioner (model VPE):

document

No.

OM2-8310-0410

• Smart valve positioners

Model AVP300/301/302 (integrated type)/

Model AVP200/201/202 (remote type): document No. CM2-AVP300-2001

Model AVP701/702:

document No. CM2-AVP702-2001

Model AVP77_/78_/79_:

document No. CM2-AVP772-2001

• Smart valve positioners (with fieldbus support)

Model AVP703:

document No. CM2-AVP703-2001

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Содержание VDD Series

Страница 1: ...OM2 8110 0530 Weir Diaphragm Control Valve Model VDD_ _ _ User s Manual...

Страница 2: ...laims the implied warranties of merchantability and fitness for a particular purpose and makes no express warranties except as may be stated in its written agreement with and for its customer In no ev...

Страница 3: ...t in death or serious injury CAUTION Cautions are indicated when mishandling this product may result in minor injury or property damage only In describing the product this manual uses the icons and co...

Страница 4: ...wear safety shoes and watch your step During work wear protective goggles to prevent injury from flying objects and harm from chemicals During work wear protective gloves to prevent injury from burrs...

Страница 5: ...rs install a fence or cover as a protective measure Do not install the valve where it may be submerged by rainwater covered with snow or subject to freezing Otherwise the valve might be damaged If the...

Страница 6: ...id installing the valve where it will be subject to vibration or other external forces that may affect its performance Protective covers are attached to the flanges to protect the gasket contacting su...

Страница 7: ...v Tighten evenly in a diagonal pattern Max weight...

Страница 8: ...caused by pieces of tape may result in poor valve performance If liquid packing thread lock sealant is used for air supply piping work do not allow it to enter inside the pipes If it does poor valve...

Страница 9: ...tc Otherwise the springs may jump out causing injury When removing the valve from the piping if the eyebolts eyenuts attached to the actuator are used to hoist the valve make sure that the weight does...

Страница 10: ...viii Close valve Close valve Close Open Valve Pressure regulator No pressure No pressure Packing Gasket Follow the assembly procedure Replace the packing and gasket Tighten bolts to specified torque...

Страница 11: ...acking gasket is attached to the cap of auxiliary equipment such as positioners Do not lose it during wiring work Take care not to lose screws for the cap of auxiliary equipment such as positioners Ma...

Страница 12: ...amage etc When unpacking check that the following items are included The valve actuator and parts to be mounted Any auxiliary devices that you ordered z Checking the Specifications Check that the flui...

Страница 13: ...ing the specifications cover it with a polyethylene protective sheet to keep rainwater out To store a valve that has been used follow the instructions below 1 Wash out any fluid stuck to or remaining...

Страница 14: ...fter Installation and Precautions for Operation 4 Chapter 3 Maintenance and Inspection 5 Chapter 4 Disassembly and Assembly 7 4 1 Detaching the Actuator from the Valve Body 7 4 2 Disassembly and Assem...

Страница 15: ...ody section consists of the valve body diaphragm spindle compressor bonnet etc The diaphragm controls the flow as it is driven vertically into or out of the weir section of the valve body by the actua...

Страница 16: ...re and other major specifications of the control valve Check that the specifications indicated on the nameplate are appropriate for the application The nameplate also includes the product number PROD...

Страница 17: ...tion on the Piping 1 Before installing the valve on the piping remove foreign matter scale welding spatter etc from both upstream and downstream sides of the pipe 2 Make sure that the gaskets do not p...

Страница 18: ...rd 2 3 Inspection after Installation and Precautions for Operation 1 Check the air pipe connections for leakage before use 2 Make sure that the bolts and nuts of the diaphragm case etc are firmly tigh...

Страница 19: ...chapter 4 Disassembly and Assembly Leaks of fluid from between the valve body and the bonnet Visual check check with effervescent liquid etc Release the fluid pressure and then retighten the screws to...

Страница 20: ...with bonnet Unit N m Connection diameter inches Diaphragm material PTFE body material anything other than hard natural rubber Diaphragm material rubber natural rubber chloroprene EPDM 1 2 4 0 2 0 3 4...

Страница 21: ...ke and lift and remove the actuator from the valve body 4 2 Disassembly and Assembly of the Valve Body Disassembly procedure 1 Remove the hex nuts from the bonnet using a wrench 2 Remove the bonnet sp...

Страница 22: ...e 1 Valve body corrosion or wear of the wetted parts cracks on the lining 2 Diaphragm deterioration wear cracks 3 Spindle damage on the sliding parts Assembly procedure 1 Attach the diaphragm to the c...

Страница 23: ...f the edge of the diaphragm Tighten the nuts evenly in a diagonal pattern using a wrench 4 For a PTFE diaphragm the valve body and the diaphragm will be sealed better if the bolts and nuts are tighten...

Страница 24: ...Make sure that grease is not applied to the diaphragm 2 Before starting assembly check that there is no foreign matter on the diaphragm lining or weir section so that foreign matter will not be caught...

Страница 25: ...the actuator stem moves in response This is a margin for stroke 6 Reduce the air pressure slightly and set the air pressure to the spring range upper limit again Then tighten the hex bolts that hold...

Страница 26: ...200 Pneumatic single acting valve positioner model VPE document No OM2 8310 0410 Smart valve positioners Model AVP300 301 302 integrated type Model AVP200 201 202 remote type document No CM2 AVP300 20...

Страница 27: ...riodic inspection Valve body section O rings Every five years Diaphragm Every year Actuator Diaphragm Every five years Bushings Every five years HA2 3 4 only For replacement please contact us Cap Ever...

Страница 28: ...Azbil Corporation 14...

Страница 29: ...Azbil Corporation 15 Chapter 6 Disposal If this device is no longer needed dispose of it appropriately as industrial waste in accordance with local regulations Do not reuse all or a part of the device...

Страница 30: ......

Страница 31: ......

Страница 32: ...o your use 3 Measures to be taken to secure the required level of the reliability and safety of your Equipment in your use Although azbil is constantly making efforts to improve the quality and reliab...

Страница 33: ...argin of your machine or equipment you are required to renew any Azbil Corporation s products every 5 to 10 years unless otherwise specified in specifications or instruction manuals System products fi...

Страница 34: ......

Страница 35: ...Document Number Document Name OM2 8110 0530 Weir Type Diaphragm Control Valve Model VDD User s Manual Date 1st edition Nov 1988 4th edition Feb 2022 Issued Edited by Azbil Corporation...

Страница 36: ......

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