Azbil ACP Series User manual

CM2-ACP100-2001
Control Valves
Model ACP_ _ _/ACN_ _ _
User's Manual

NOTICE
While the information in this manual is presented in good faith and
believed to be accurate, Azbil Corporation disclaims any implied
warranty of merchantability or fitness for a particular purpose and
makes no express warranty except as may be stated in its written
agreement with and for its customer.
In no event shall Azbil Corporation be liable to anyone for any indirect,
special or consequential damages. is information and specications
in this document are subject to change without notice.
© 2001-2018 Azbil Corporation. All Rights Reserved.

Safety
1. Nomenclature of parts
For control valve terminologies and words in this guide, please read the following
explanations before using the device.
Diaphragm
Yoke
Bonnet
Valve body
Flange
Actuator
Fig. S-1. Nomenclature of globe valve
Body
Valve body
(Vane or disk)
Link
Actuator
Fig. S-2. Nomenclature of buttery valve
i

ii
2. Safety precautions
Please read this guide before using the valve to ensure proper handling.
WARNING
Denotes a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION
Failure to observe these precautions may produce dangerous conditions
that could result in operator injury or in physical damage to the device.
3. Verication of Valve specications and precautions on storage
3-1. Unpacking
Control valve is a precision equipment. Handle it with care to avoid damaging it.
When unpacking, check for the following items in the crate:
• Main valve body, actuator and accessories as ordered,
• Additional equipment as ordered. Installation Options
3-2. Verication of specications
Please check and see if that the process ow uid conditions, and valve Tag No. agree with
the purchasing specications. e nameplate of each product are found as shown below.
(Other products also have identical nameplates attached to the identical positions.)
TRIM
PLUG
BODY
RATING
SIZE
MODEL
mm
VALVE
TAG NO.
LIFT
PACKING
AIR TO
SUPPLY
PROD.NO.
GREASE
RANGE
ACTUATOR
DATE
MADE IN JAPAN
GASKET
Fig. S-3. Position of nameplate on CV3000 Series

iii
CAUTION on storage
When storing the control valve, pay attention to the following precautions
of caution:
• A Control valve that has been packed in a cardboard box should be stored
indoors at normal temperature and humidity.
• A Control valve that has been packed in a wooden crate should be stored
indoors at normal temperature and humidity as a rule. In the event of
outdoor storage, open the crate, verify specifications and cover with
polyethylene protecting sheet.
• When storing a used valve, follow the procedures as described below:
(1) Flush out the process fluid from inside the valve body and dry,
(2) When there is a possibility of the valve body rusting, preservation
treatment should be given,
(3) To prevent water from getting in the instrument, cover pneumatic
tubing connection and electric connector with watertight cap or tape.
Also, protect connector threads,
(4) Place flange cap on the end of pipe connecting surface (flange face,
butt welding connections) to avoid possible damage.

iv
4. Installation
4-1. Installation environments
CAUTION
• Ensure sufficient space for easy
and safe operation and
maintenance of control valve.
• Avoid installing valve in a
location where vibration or
external stress may impair
proper valve functions.
If necessary, make
appropriate provisions
against these.
• Consider providing a
support for the valve so that
the process piping is not
burdened with the excessive
weight of valve, or provide
supports on the upstream
and downstream pipe runs.
• Provide a cover or protective
fence around valve installation
when a valve is installed facing a path or if physical contact with valve is
expected.
• Do not install a valve where it may be submerged water, or snow or where
freezing may take place.
• Provide a wall for protection against heat radiation.
• Provide measures to protect valve against salt spray or corrosive
atmospheres.
• To stop operation of the Flowmeter:
- Switch the control equipment connected to the flowmeter to manual
control.
- Turn off power to the Converter.
CAUTION
• In order to guard against accident while handling the valve, always wear
safety gloves, goggles and safety shoes.
Pipe support
Maintenance space

v
Prior to installation work, follow the items of caution as described below:
CAUTION
• Check and confirm that there is no external damage to the valve (body,
actuator, accessories).
• heck and confirm that there is no damage on pipe connecting flanges or
butt welding connections,
• Ensure that temperature of welded part of pipe has been reduced before
proceeding,
• Make sure that the flanges on pipe have been chamfered.
• Remove dust, sand, welding spatter or any other foreign matter from pipe
and clean out pipe. Any foreign matter will damage the valve seat and
reduces shutoff characteristics.
• Ensure that upstream and downstream pipe supports are sufficiently
strong. Otherwise, the valve's weight may cause leakage from flange
connections.
WARNING
• Operation of valve over and beyond the rated pressure or connection
other than recommended of specified connection may cause damage or
leakage which may result in serious injury.
Scar
Dirt, sand

vi
4-2. Installation work
CAUTION
• Ensure that centers of upstream and downstream pipes are aligned when
pipe installation has been completed. Any mis-alignment of pipe will
distort the valve and will cause leakage from the connections. (Gasket)
• Make sure that the face to face dimension of pipe flanges is equal to face
to face dimension of valve body plus gasket thickness.
• Use proper gaskets for pipe flanges. Otherwise, process fluid may leak.
Always use new gaskets for pipe flanges that will meet process fluid
specifications, temperature and pressure conditions. Otherwise process
fluid leakage may occur.
• When flushing pipes, keep valve in the fully open position and do not
stroke valve. Welding spatter or foreign matters may damage valve.
Weight
limit
Suspending
1
2
3
4
Tighten diagonally
WARNING
When installing a valve on a pipe, keep hands and feet away from valve
body's bottom or between flanges to avoid physical injury.
When reinstalling the valve after inspection, maintenance or modification,
flush out process fluid remaining in the pipe or replace it with safer liquid.

vii
4-3. Pneumatic piping and electric work
CAUTION
• Pneumatic tubing should be sized so as not to cause dropping of air
pressure when control valve is in operation, Pneumatic tubing should
have an allowance in bend (use specialized tool) and bands should bind
parallel tubing.
• Only qualified persons should do electric work in accordance to electrical
facility engineering standards.
• Cable connections should be made to conform to the facility's conditions.
A suitable adaptor or packing should be selected to suit the outer
dimension of the completed installation.
• When using seal tape on pneumatic tubing, do not apply the tape on the
first two threads from the tip of connector. This may block air passage and
cause malfunction of valve.
• When using liquid packing (seize lock) on pneumatic tubing, care should
be exercised so as not to leak the liquid into tubing. It may block the air
passage, resulting in valve malfunction.
• Avoid electrical work in rainy weather or time of high humidity. Any
intrusion of water into connector or terminal will cause rusting and
electric leakage.
• Covers of accessories such as the positioner are provided with seal
packing (gasket). Exercise care so as not to misplace or lose them while
electric work is in progress.
• Exercise care so as not to lose fixing screws of accessories such as the
positioner. When tightening screws, ensure that packing is in place and
tighten screws with an even torque.
• Cable threads and conduit seal should be tightened so as to ensure that
water does not get in.
Seal
tape
Two threads
Liquid run
Positioner

viii
5. Caution disassembly, reassembly
5-1. Disassembly
CAUTION
• When disassembling a spring-incorporated
positioner, follow the prescribed procedure in
removing bolts and nuts. Otherwise, the spring
may pop out, resulting in physical injury.
• When the eye-bolts of actuator are used to
lift valve from pipe, ensure that the weight
limitation as described in manual is adhered to.
Otherwise, there is the danger of dropping the
valve,
• When removing trim (inner valve) from
the body, ensure that the proper type of
specialized tool is used. Refer to the instruction
manual for proper tools. Otherwise, the trim
may be damaged.
WARNING
• Before disassembling the valve, ensure that the
pressure within piping has been reduced to
atmospheric pressure. Flow out of process fluid
may cause physical injury.
• When disassembling the valve, flush out
interior of the valve or replace fluid inside.
Residual process fluid may cause physical
injury,
• Do not disassemble pneumatic actuator with
supply air on. Compressed air may cause
physical injury.
Stop
valve
Reducing
valve
Close Open
Eye bolt
Spring
HTS
2-inch
Specialized
tool
Weight
limit
Suspending

ix
6. Assembly
CAUTION
• When assembling the spring loaded
actuator, adhere to the order of assembly
procedure; install bolts and nuts as
instructed. Disregard of procedure may
result in malfunction.
• When installing a butterfly valve on a pipe
line, fully close the valve (vane or disk).
Tighten flange bolts and nuts diagonally
and with even torque.
• When installing the valve the body,
always use new gaskets. Old or reused
gasket may cause leakage
• When assembling trim (inner valve),
ensure that specialized tools are
available and use only those which meet
specifications.
WARNING
• When assembling the valve, tighten
bolts and nuts at a torque as specified
in instruction manual. Any damage or
corrosion on the bolts or nuts may cause
destruction of control valve which will
lead to physical injury. Always replace
defective bolts and nuts with new ones.
Follow assembly procedure
Install butterfly valve in fully closed
position
1
2
3
4
Tighten diagonally
Replace packing / gasket

x
7. Maintenance and inspection
Adhere to the following items of Warning and Caution while conducting maintenance or
inspection.
CAUTION
When leakage from a valve is found, do not come close to the valve
until safety is assured of. A serious accident or physical injury may occur
depending on the type of fluid.
WARNING
• Check gland daily and ensure that there is no leakage from it. Check valve
operation daily, and confirm that it is not hunting.
• Make sure that there is no abnormal vibration or noise during operation,
• When the valve is repaired or disassembled, old parts should be properly
disposed of as industrial waste. Otherwise, they may contaminate the
environment.
Check scale
Check for hunting
Inspect gland (leakage)
Inspect gland
connection (leakage)
Check for abnormal
noise or vibration
Fig. S-4.

xi
Table of Contents
Chapter 1. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1-1. Scope1-1
1-2. Main components of control valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3. Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-4. Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Chapter 2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2-1. Maximum lift limits of eyebolts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2. Installing valve on process pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-3. Items to be checked after installation and before starting operation. . . . . . . . . . . . . . . . . . . . 2-2
Chapter 3. Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Chapter 4. Disassembly and Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-1. Detaching actuator from valve body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2. Disassembly and assembly of valve body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4 - 2 - 1 . Disassemblyand assemblyofplain (-17≤ t<230 °C)andextension 1(-45≤ t<17 °C)bonnettype valvebody . . 4-2
4-2-1-1. Disassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-2-1-2. Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-2-1-3. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-2-2. Disassembly and assembly of extension1 bonnet type (230 ≤ t < 400°C) valve body4-6
4-2-2-1. Disassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-2-2-2. Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-2-2-3. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4-3. Disassembly and assembly of actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4-3-1. Disassembly and assembly of model HA2, HA3 or HA4 actuator. . . . . . . . . . . . . . . . 4-12
4-3-1-1. Disassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4-3-1-2. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15
Chapter 5. Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5-1. For direct action type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-2. For reverse action type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Chapter 6. Direct / Reverse Action type Conversion and Spring range Change of Actuator.6-1
6-1. Direct / Reverse action change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-2. Stroke and range spring change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Chapter 7. Instructions for Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
7-1. Model HA2, HA3, or HA4 actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7-1-1. Disassembly and assembly of top handwheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

xii
Chapter 8. Instruction for Side Handwheel of Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
8-1. Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8-2. Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8-3. Disassembly and assembly of side handwheel (Refer to Fig. 8-1). . . . . . . . . . . . . . . . . . . . . . . . 8-2
Chapter 9. Instruction for Mechanical Flow Stopper of Actuator . . . . . . . . . . . . . . . . . . .9-1
9-1. Adjustment for Minimum Flow Stopper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9-2. Adjustment for Maximum Flow Stopper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9-3. Adjustment for Minimum and Maximum Flow Stopper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Chapter 10. Instructions for Bellows Sealed type of Control Valves. . . . . . . . . . . . . . . 10-1
10-1. Structures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
10-2. Disassembly and assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
Chapter 11. Azbil Low Emission standard-compliant gland packing . . . . . . . . . . . . . 11-1
11-1. Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
11-2. Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
11-3. Installation into the gland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
11-3-1. Preparation for installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
11-3-2. Start of installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
11-3-3. Retightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6
11-4. Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-7
Chapter 12. Certified ISO 15848-1 compliant low emission gland packing . . . . . . . 12-1
12-1. Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
12-2. Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
12-3. Starting Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
12-4. Assembling the parts of the gland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
12-4-1. Preparation for assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
12-4-2. Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-5
12-5. Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-9
12-6. Application to existing control valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13
12-7. Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13
Chapter 13. Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
Chapter 14. Recommended spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1

1-1
Chapter 1. General
1-1. Scope
This manual covers the instructions for:
• Mode ACP ........Pressure-Balanced Cage-type Control Valves with piston ring
• Model ACN ......Low noise cage type control valves with piston ring
For the valve Positioners, refer to the following:
Model HTP ..........................................................OM2-8310-0200
Model HEP28/29 .................................................CM2-HEP280-2001
Model HEP18/19 .................................................OM2-8313-0101
Model HEP15/16/17 ...........................................OM2-8313-0100
Model HEP10/11..................................................CM2-HEP100-2001
Model AVP300/301/302/200/201/202 ..............CM2-AVP300-2001
Model AVP701/702 .............................................CM2-AVP302-2001
Model AVP703 .....................................................CM2-AVP303-2001
1-2. Main components of control valves
Each control valve is comprised of two main components, namely, a valve body and an
actuator. Various combinations of valve body and actuator are available to meet various types
of uses with different valve sizes, pressure ratings, types of connections, types of materials, and
actuator sizes.
(For details on specifications, refer to Specfication Sheets SS2-ACP110-0100 or SS2- ACN110-
0100.)

1-2
1-3. Structures
The structures of typical control valves are shown in Fig. 1-1.
The valve body is connected to the bonnet with stud bolts and nuts. Two gaskets are provided
at the connection section to seal the internal fluid or to let the valve body make up a pressure
vessel. The valve plug is supported by the guide ring and cage, and driven by the actuator. The
actuator has multiple springs and a diaphragm, and converts the pneumatic control signal into
a mechanical (positional) control signal with which to position the valve plug.
Fig. 1-1. Pressure-balanced cage-type control valve model ACP
Fig. 1-2. Low-noise cage-type control valve model ACN

1-3
1-4. Nameplate
A nameplate, as shown in Fig. 1-3, is attached to each control valve. The nameplate indicates
the model number, valve size, pressure rating, trim material, date of manufacture and other
major specifications of the control valve. Before installing the control valve, make sure that the
specifications indicated on the nameplate conform to the conditions of use. The nameplate
also indicates the product number (PROD.NO.) of the control valve. Please mention this
number also when consulting your Azbil Corporation agent for parts replacement or any
other modification of the control valve.
TRIM
PLUG
BODY
RATING
SIZE
MODEL
mm
VALVE
TAG NO.
LIFT
PACKING
AIR TO
SUPPLY
PROD.NO.
GREASE
RANGE
ACTUATOR
DATE
MADE IN JAPAN
GASKET
Fig. 1-3. Nameplate

1-4

2-1
Chapter 2. Installation
2-1. Maximum lift limits of eyebolts
The diaphragm case has a pair of lifting eyebolts. These eyebolts primarily are for lifting the
actuator alone. Before using the eyebolts for other purposes (such as lifting an actuator fixed
to its valve body or other components), take note of the allowable maximum lifting loads of
the eyebolts that are as shown in the following Table 2-1.
Table 2-1. Maximum lifting loads of eyebolts
Actuator model No. Allowable Maximum
Lifting Load of Eyebolts Weight of Actuator Alone
HA2, HA2R
HA3D, HA3R
HA4D, HA4R
160 kg
160 kg
220 kg
16 kg
32 kg
68 kg
Note: The eyebolts may be used to lift the actuator together with its valve body (cast globe
valve) of up to pressure rating “Class 600“. When doing this, be extremely careful so that
no shock or other abnormal force is applied to the actuator or the valve body.
2-2. Installing valve on process pipe
(1) Before installing the valve on the process pipe, remove foreign substances (such as scales
and welding chips) from both upstream and downstream sides of the process pipe.
(2) Confirm that the direction of process fluid flow conforms with that of the arrow provided
on the valve body.
(3) Pay attention so that the pipe connection gaskets do not extrude into the process pipe
inside. Be sure to use gaskets made of material which is suitable for the process fluid. The
welded type of valve employ no gaskets.
(4) Pay attention so that no excessively large stress is conveyed from the process pipe to the
valve body. Uniformly tighten the bolts of the process pipe connection flanges. The high
pressure type of valves have no flanges, since they are welded to the process pipe.
(5) Before connecting the air pipes to the actuator and positioner, blow the pipes to clean
them.
(6) Do not install any heating or cooling provisions on the bonnet.

2-2
2-3. Items to be checked after installation and before starting operation
(1) Check that there is no leak from air piping.
(2) Check that the bolts and nuts of the diaphragm case are not loose. Standard tightening
torques are listed below:
(3) Tighten the packing flange nuts to prevent leak from the gland packing section. Standard
tightening torques are given in Table 2-2
Table 2-2. Tightening torques of packing flange nuts
Valve
stem
diameter
(mm)
V PTFE
Packing
PTFE
Yarn
Packing
(P4519)
Graphite Yarn Packing
P6610CH + P6528
P6610CH + M8590
T2200 + P6710CH (Type2)
V PTFE + PTFE
Yarn
Packing
PTFE + V7233
PTFE + TK2006
10 1 {8} 9 {90} 5 {50} 3 {30}
13 15 {150} 8 {80} 5 {50}
16 24 {240} 13 {130} 8 {80}
20 32 {320} 18 {180} 10 {100}
25 - 28 {280} 15 {150}
30 66 {660} 36 {360} 20 {200}
Note: The tightening torques mentioned in the above are only to given as reference values.
Note that tightening torques may vary depending on the type of packing.
Table 2-3. Tightening Torques of packing Flange Nuts for PTFE yarn (Certified ISO
15848-1-compliant low-emission gland packing)
Model Actuator model Stem size Tightening torque
ACP, ACN
HA2 φ10 mm 12 N·m
HA3 φ13 mm 20 N·m
HA3 φ16 mm 33 N·m
HA4 φ20 mm 44 N·m
PSA6 φ30 mm 54 N·m
Table 2-4. Tightening Torques of packing Flange Nuts for expanded graphite (Certified ISO
15848-1-compliant low-emission gland packing)
Model Actuator model Stem size Tightening torque
ACP, ACN
HA2 φ10 mm 12 → 0 (loosening) → 8 N·m
HA3 φ13 mm 20 → 0 (loosening) → 13N·m
HA3 φ16 mm 33 → 0 (loosening) → 22N·m
HA4 φ20 mm 44 → 0 (loosening) → 30N·m
PSA6 φ30 mm 54 → 0 (loosening) → 36N·m