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172-65238M-00 (CV5) 25 February 2003

Control Valve

CV5

Copyright © 2000 by TLV CO., LTD.

All rights reserve

ISO 9001/ ISO 14001

Manufacturer

Kakogawa, Japan

is approved by LRQA LTD. to ISO 9001/14001

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Summary of Contents for CV5

Page 1: ...172 65238M 00 CV5 25 February 2003 Control Valve CV5 Copyright 2000 by TLV CO LTD All rights reserve ISO 9001 ISO 14001 Manufacturer Kakogawa Japan is approved by LRQA LTD to ISO 9001 14001 ...

Page 2: ... For products with special order specifications or options if detailed instructions for the special order specifications or options are not contained in this manual please contact for full details This instruction manual is intended for use with the model s listed on the front cover It is necessary not only for installation but for subsequent maintenance disassembly reassembly and troubleshooting ...

Page 3: ...at of death or serious injury WARNING Indicates that there is a potential threat of death or serious injury CAUTION Indicates that there is a possibility of injury or equipment product damage CAUTION DO NOT use this product outside the recommended operating pressure temperature and other specification ranges Improper use may result in such hazards as damage to the product or malfunctions that may ...

Page 4: ...xcessive force when connecting threaded pipes to the product Over tightening may cause breakage leading to fluid discharge which may cause burns or other injury Use only under conditions in which no freeze up will occur Freezing may damage the product leading to fluid discharge which may cause burns or other injury Use only under conditions in which no water hammer will occur The impact of water h...

Page 5: ... Body material Cast Iron Cast Steel Connection Flange Size 15 20 25 32 40 50 15 20 25 32 40 50 PMO MPaG 1 3 1 0 2 5 1 7 1 0 TMO MPaG 200 220 Seat Plug Sealing Metal Sealing Characteristic Equal Percentage Rangeability 50 1 Leakage Class IEC534 4 ClassⅣ Actuator Actuator Area cm2 120 Fail safe Position Air to open Air to close Bench Range MPa 0 04 0 14 0 21 0 33 Electrical Input Signal mA 4 20 Air ...

Page 6: ...1 Valve body 8 Body Gasket 2 Valve Bonnet 9 Actuator Body 3 Valve Seat 10 Diaphragm 4 Plug and Stem 11 Actuator Stem 5 Guide Bushing 12 Positioner Case 6 Stuffing Box V ring 13 Stem Bracket 7 Stuffing Box Spring 14 Yoke 9 10 12 14 13 6 7 2 8 4 3 1 11 5 ...

Page 7: ...hreaded pipes to the product Over tightening may cause breakage leading to fluid discharge which may cause burns or other injury Installation inspection maintenance repairs disassembly and adjustment should be done only by trained maintenance personnel 1 Mounting position The valve can be mounted in any position However strictly observe the limitations resulting from the type of actuator used The ...

Page 8: ...essure gauge connection however the plug 2 Fig 2 must be removed first 3 1 Mounting the actuator on the valve 1 For the electropneumatic actuator apply a pressure of approx 3 bar to the connection Supply and additionally connect a control signal of 10 mA to retract the actuator stem 2 Remove the hexagon nut 5 from the valve bonnet and place the actuator with its stem retracted on the valve bonnet ...

Page 9: ...le connector on the actuator housing Note Do not remove the female connector from the actuator housing Correct ground connection can only be guaranteed when it is in its original position 2 Unthread the fastening screw of the plug connector and remove the rubber gasket 3 Lever the plug insert out of the plug connector case using a screw driver 4 Connect the wires transmitting the control signal vi...

Page 10: ...t when the actuator is mounted on the valve Zero and span are adjusted to determine the starting point and the upper range value of the actuator When the control signal reference variable changes from 4 to 20 mA the valve must correspondingly pass through its entire travel range from 0 to 100 Zero adjustment is always based on the closed position of the control valve Actuator with close fail safe ...

Page 11: ...input signal and then slowly increase it again Check if the plug stem begins to move at 4 0 1 mA 4 Correct any deviations via the zero adjuster 4 fig 4 Turning counterclockwise causes the valve to leave its rest position earlier whereas turning clockwise causes the valve to delay leaving of the rest position Upper range value 5 Having completed adjustment of the starting point use the ammeter to i...

Page 12: ...lockwise causes the valve to leave earlier Upper range value 5 Having completed adjustment of the starting point use the ammeter to adjust the input signal to 4 mA When reaching the upper range value of 4 mA the plug stem must have passed through its entire rated travel range of 100 6 Adjust the potentiometer for span 1 fig 4 until the upper range value is correct Turning clockwise increases the t...

Page 13: ...ing or removing the product wait until the internal pressure equals atmospheric pressure and the surface of the product has cooled to room temperature Disassembling or removing the product when it is hot or under pressure may lead to discharge of fluids causing burns other injuries or damage Use the following procedures to remove components Use the same procedures in reverse to reassemble Installa...

Page 14: ... the valve bonnet with flange on the valve body and secure with nuts 1 1 Observe the tightening torques 2 Replacing the packing Fig 6 If the valve leaks at the stuffing box the packing 4 2 of the stuffing box needs to be exchanged as follows 1 Unscrew the nuts 1 1 and remove the valve bonnet 5 and flange 5 1 2 Check the gasket 1 2 in the valve body for damage We recommend that you re place the gas...

Page 15: ...rimary press of control valve might be too high Check the system Plug or valve seat might be worn or dirty Clean parts or replace Bypass shut off valve might be leaking Check the shut off valve Valve Leak Plug stem can not move smoothly Replace parts or reassemble the bonnet External leakage from stuffing box V ring or stem might be worn or dirty Clean parts or replace Hunting or chattering of the...

Page 16: ...lation use handling etc by other than TLV CO LTD authorized service representatives Malfunctions due to dirt scale rust etc Malfunctions due to improper disassembly and reassembly or inadequate inspection and maintenance by other TLV CO LTD authorized service representatives Malfunctions due to disasters or forces of nature Accidents or malfunctions due to any other cause beyond the control of TLV...

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