Bulletin No. MIE-B4301A

Bulletin No. MIE-B4301A

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INSTRUCTION MANUAL

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
  
 This catalogus is supplied for information purpose only and should not
be considered certified marketability and conformability of this prodct.

□ MOTOYAMA is continuously improving and upqrading its product design, specifications and/or
dimensions, Information included herein is subject to change without notice.

■ Head Office and Factory
5-2, Ohira Aza Kameoka, Ohhira-Mura, Kurokawa-gun, Miyagi-ken, 981-3697 Japan
TEL: ＋ 81-22-344-4546 / FAX: ＋ 81-22-208-5020■ Tokyo Branch
4 F Nihon Seimei Tamura-cho Bldg., 4-1-9, Shinbashi, Minato-ku, Tokyo, 105-0004 Japan
TEL: ＋ 81-3-6403-7782 / FAX: ＋ 81-3-6403-7788
Printed in Japan
2011. 04. 500 TKP

Introduction
Thank your very much for choosing MOTOYAMA Control Valves.
To use this product safely and to optimize its performance, it is recommended that the following instruction should be read carefully and followed.

1 General
１ Keep this instruction manual in operator's hand.
２ Before using this Control Valves, read this instruction manual carefully and fully understand it for
operation.
３ This instruction manual does not cover the Accessories installed to the Control Valves.
Kindly refer appropriate Accessories' Instruction Manual along with this manual.

2 For Safety Use
To use this Control Valves safely, this instruction manual describes symbols and signal terms in accordance with JIS Z2901 and ANSI Z5351 which shall call your attention to keep safety manner or
to give caution of handling, together with notes. Important information has been marked and emphasized with the following symbols in this Instruction Manual.

Symbols &Signal Terms

Explanation

A direct endangerment of a person's health or life may occur
if the Warning was not observed.



If the Caution was not observed, minor personal injuries and/or property damages may result.

WARNINGCAUTION
3 NoteMOTOYAMA is continuously improving and upgrading its product design, specifications and/or dimensions. Information included herein is subject to change without notice.
MOTOYAMA ENG. WORKS, LTD. SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIALERRORSOROMISSIONSCONTAINEDHEREIN

;

NOR

FOR

INCIDENTALORCONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR
USE OF THIS MATERIAL.

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Transportation, Unpacking, Check and Storage
1 Transportation

CAUTION

When loading or unloading and transportation of Control valves, pay
full attention not to drop or not to give shock with hitting or bumping
etc. It would make the Valves and its accessories mechanical troubles
or damages as of precision instrument.

◆ If any cautions/instructions or care marks are indicated on the package, follow them as it is.

2 Unpacking(1) There are two types of packages used for Control Valves, wooden crate/box and carton. In either case, unpack the crate/box or carton indoor or in warehouse.



CAUTION

Never unpack the package of Control Valves outdoor place where rain
falls, on damp and wet ground and/or where dust is in the air.
It would make the Valves and its accessories mechanical troubles ordamage because of precision.

(2) When unpacking the wooden box, follow the procedure described below unless otherwise
specified.
① Pull off round pegs around edge protectors at each corner and remove them.
② Pull off round pegs stuck on roof (top) and remove the roof (top).
③ Remove waterproofing materials, if applied, inside of the box.
④ Pull off round pegs stuck on frame at side and remove side plates.
⑤ Pull off round pegs stuck on frame at end and remove end plates.
⑥ If the goods are fixed with square-lumbers or bolts and nuts, remove them.
⑦ Remove waterproofing materials such as polyvinyl packing covering the goods.

[Note] T-form pegs are not required to be pull off when unpacking.

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3 Check of the Products[Caution] After receiving the goods, unpack the packing promptly and check if the goods delivered are complying
with your order specification.

①

When taking out the goods from box, pay attention not to give any physical shock to theAccessories attached to the Valves. Take out the spare parts if they are enclosed.

② Check the Name Plate attached to the Yoke of Actuator whether Valve specification complying
with your request.
③

If any clarification required on the received goods, please contact MOTOYAMA sales officespecifying Serial No. and Model Number indicating on Name Plate attached to the Valves.

4 Storage①

If the goods need to be stored before installation, store the goods in warehouse or equivalentindoor storage facility, covering whole the goods with cover like polyethylene sheet and protect
the goods from high temperature, moisture, dust and vibration etc.



CAUTION

During storage of the goods, protect Conduit connection of electricalinstrument from moisture or water which would give breakdown of theelectricity and cause trouble on the product.

② If the period of storage is exceeding one (1) year after delivery, re-calibration of the Valve action
and checking of gland and gasket leakage before installation must be made. Please contact
MOTOYAMA sales office when re-calibration is requested.

iii

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CONTENTSPage
１. Purpose of this Instruction Manual ………………………………………………………………… 1
２. Application of Control Valves
2. 1

Purpose of Use …………………………………………………………………………………

2

2. 2

Construction ……………………………………………………………………………………… 2

2. 3

Specification ……………………………………………………………………………………… 5

３. Installation
3. 1

General ………………………………………………………………………………………………6

3. 2

Installation on System Piping …………………………………………………………………

3. 3

Inspection after Installation …………………………………………………………………… 7

7

４. Operation, Check and Maintenance
4. 1

Precautions and Check before Operation …………………………………………………… 8

4. 2

Greasing to Gland Packing …………………………………………………………………… 9

4. 3

Check and Maintenance………………………………………………………………………… 10

５. Disassembling and Re-assembling
5. 1

Split of Actuator from Valve Body …………………………………………………………… 11

5. 2

Disassembling and Re-assembling of Valve Body ………………………………………… 12

６. Trouble Shooting ……………………………………………………………………………………… 22
７. Recommended Spare Parts ………………………………………………………………………… 24
８. Disposal of Control Valves and Parts ……………………………………………………………… 25
Reference Data <Estimated Life-Cycle of Control Valve parts> …………………………………… 26iv

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Purpose of this Instruction manual(1) This Instruction Manual provides the essential information for optimizing MOTOYAMA
Diaphragm Actuated Seal-Ring Balanced Cage Guide Globe Type Control Valves, Model 83ABS and 83A-BSH for safety operation.
(2) Read this manual carefully before installing, operating or overhauling MOTOYAMA Control
Valves, Model 83A-BS and 83A-BSH.
(3) Together with this manual, read the following Accessories' manuals before using, when applicable.

Accessory Name

Bulletin No.

Model 01, 05, 83A, 83, 89
Globe Type Control Valves USER'S MANUAL

MIE-B3001

Electro-Pneumatic Valve Positioner
EA91A, EA90A

MIE-B6104

Pneumatic Valve positioner PA92A

MIE-B2008

Air Filter Regulator

MIE-B6903

MR2000(4) If any other Accessories are installed on the Valves delivered, kindly request our sales office appropriate Instruction Manual, if necessary.

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Application of Control Valves

2. 1

Purpose of Use

Model 83A-BS and 83A-BSH Control Valves are installed in process piping and used to Control
process flow, activating Valve Plug open and close or throttling the Valve Plug and seat replying
Control signal such as 4〜20mA DC or 20〜100kPa from Controller in instrumentation system, tokeep the specific and/or the constant process conditions.
Applicable Pressure and Temperature range of Model 83A-BS and 83A-BSH are as follows.

Model

Applicable press. Range

Applicable Temp. Range

83A-BS (for medium Temp.)

9.8MPa(100kgf/cm2G)and lower−50℃ 〜 ＋230℃

83A-BSH (for high Temp.)

2. 2＋500℃ and lower

Construction(1) Model 83A-BS and 83A-BSH consist of Body Assembly and Actuator Assembly.
Body has Controlling mechanism actually Control the process flow and Actuator has driving
mechanism to activates Valve Plug receiving air power source.
Seal-Ring design for Model 83A-BS and 83A-BSH are given below.

Model 83A-BS
Materials

Structure

Model 83A-BSH

Seal-Ring: carbon graphite composite PTFE

Seal-Ring: Metal sintered carbon

Back-up Ring: carbon graphite composite PTFE

Tension-Ring: SUS316① Seal-Ring is installed between Holder andCage.
② Back-up Ring is installed for port size 200
and larger together with Seal-Ring.
③ Seal-Ring seals guide clearance flow contact with Valve Plug sliding surface.

① Seal-Ring is installed in the groove of the
Valve Plug with Tension-Ring (inside).
② Seal-Ring seals guide clearance flow contact with guide sliding surface.

Fig. 2-1 (page 3) shows constructions of Model 83A-BS and Fig. 2-2 (page 4) shows Model
83A-BSH.
Body and Bonnet are jointed together with Stud Bolts, Nuts and Gasket and provide pressure
containing parts where process flow runs through or stay.
Valve Plug is led by Cage and keep proper position by Actuator Controlled by signal to theActuator.
(2) See Bulletin No. MIE-B3001 Globe Type Control Valves, USER'S MANUAL" for the details ofActuator construction.

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Fig.2-1Model 83A-BS Control Valves(a) Model 3883ACV-BS(b) Model 3883ACS - BS
Multi-holes Type(c) Model 3883ACS-L-BS
DoubleStage Multi-holes Type3

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Fig.2-2

Model 83A-BSH Control Valves(a) Model 3883ACV-BSH(b) Model 3883ACS-BSH
Multi-holes Type4(c) Model 3883ACS-L-BSH
Double stage Multi-holes Type
2. 3

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Specification

See Catalog (Bulletin No. MCE-B4307) for detail specification of Model 83A-BS and 83A-BSH
Control Valves.



CAUTION

Do not use the products beyond the selected specification, code,
standard and/or regulations to secure the safety of the delivered products.

Model 83A-BS and 83A-BSH Control Valves have some limitation for usage because of Seal-Ring
materials. Following condition shall be reviewed before installation.

2. 3. 1Model 83A-BS

CAUTION

Do not use the products for following services because carbon graphite composite PTFE is used for Seal-Ring material.
・ Food processing services
・ Oxygen services
・ Services where coloring is done or resin debris is a problem.
・ Acid at high-temperature and pressures(Aqua Regina, Nitric,
Sulfuric Acid)・ Fluorine gas (F2), CIF3, OF2 etc. at high temperature.
・ Metal hydrides such as 80%KOH and B2H6.

Model 83A-BS may be applicable for above services by changing Seal-Ring material.
Please contact MOTOYAMA sales office for details.

2. 3. 2Model 83A-BSH
Be sure to use the Valves under following condition because SealRing is made of metal sintered carbon.

①

CAUTION②

Seal-Ring material is easy to be oxidized in oxidizing condition.
Service condition of the Valves shall be within the following temperature range.
*1. For oxidizing fluid: 0〜＋400℃*2. For steam service and non-oxidizing fluid: 0〜＋500℃
Kindly check the availability of the Seal-Ring for the service ofstrong acid fluids or chemicals higher than 100℃.

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3

Installation

3. 1

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GeneralControl Valves shall be installed in vertical to the piping line in general or Valve Stem shall be vertical to the ground.

①

Keep sufficient space to the Valves to be accessible to operatesafely and to make maintenance work, inspection and testingeasily.
② Eye-Bolts (Nuts) on Diaphragm case assembly must be used only
for hanging Actuator assembly. Do not hang up complete Valvesusing Eye-Bolts after assembling Body and Actuator. In any case,the following mass shall not be exceeded to hang up.
[Unit : kg]

ActuatorModel No.

3800

CAUTION
2800

Actuator
Size

Allowable
Hung Up Mass

Actuator Mass

N24

80

12

N28

150

15

N33S

150

24

N40

220

49

500 S/L

220

85/102 (Note 2)

650 S/L

900 (Note 3)

270/275 (Note 2)

650X S/L

900 (Note 3)

365/395 (Note 2)【Notes】(1) See catalogues for each Valves mass.
(2) Actuator mass is for direct action.
(3) Only when using four (4) Eye-Bolts for 650S/L and 650XS/L Actuator.
Other size of Actuator, allowable lifting load is permissible using two (2)Eye-Bolts.

③



WARNING

6

Ambient temperature and humidity for the Valves should be−20℃〜＋70℃, and be less than 90% RH.

Never use the Valves on the service condition exceeding the rating
and the standard of connection to prevent the Valves from damage,breakage and/or leakage.

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3. 2

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Installation on System Piping(1) Remove all welding chips, scales and other foreign matters from internal of the piping line before installing the Valves in between.
(2)

Be sure to match arrow mark on the Valve Body to the flow direction when installing.

(3)

Piping Gasket shall be installed properly not to be out into the Body bore diameter.

(4)

Be sure the concentricity and parallelism of the Valves inlet and outlet piping are correct.
Tighten Bolts and nuts equally. Be sure not to give the excessive stress to the Valves.
①



CAUTION(5)

When tightening, be sure not to give excessive load (piping
stress) to the Valves which would cause damage, deformationand leakage.
② Seat leakage would increase if Valves installed in-correct flow direction and durability of the Seal-Ring will be deteriorated. Do not
use Valves on services which create back pressure to Valve.

Blow off scales, rust and foreign matters in pneumatic piping by compressed Air before connecting pneumatic piping to the Actuator and accessories.

(6)

Refer to each instruction manuals for wiring the conduit of electric equipments.

(7) For Finned or Extension Bonnet Valves, do not cover Bonnet with heating or cooling insulation.



CAUTION
3. 3

Either Body or Actuator, or the both, should be supported by proper
way.

Inspection after Installation(1)

Carry out leakage test to check leakage from the connection piping.

(2)

Check leakage from Gland or Gasket after test pressure is applied to the piping.
If any leakage is found, reduce the pressure and retighten Gland Nuts or Stud Nuts withequally.



CAUTION①②

If more than 6 months past before starting operation of the system, retighten Gland Nuts before starting pressure tightness test.
After re-tighten Gland Nuts, reciprocate the Valves at least 10
times from fully open to fully close to fit Gland Packing for operation.

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４ Operation, Check and Maintenance
4. 1
(1)

Precautions and Check before Operation
Spring range and Off-balance for Model 2800 series Actuator is adjusted properly to the required specification when shipped. Do not turn Adjusting Screw unless otherwise it should be.

(2) Before start operation, check Stem Nuts, Actuator Bolts and Nuts and other screws to be tightened. Re-tighten if necessary.
(3) Some Gland Packing might have leakage because of stress relaxation. Check the tightness of
Gland Nuts and re-tighten if necessary.
(4) When Lubricator is equipped on Bonnet (page 9 & 10), check if Grease filled enough. Be sure
to close the Stop Valve after filling the Grease. See Table 4-1 to select appropriate Grease foreach services. Please contact MOTOYAMA sales office when replacement Grease is required.

①



If more than 6 months past before starting operation of the system, re-tighten Gland Nuts before starting pressure tightness
test.
After re-tighten Gland Nuts, reciprocate the Valves at least 10
times from fully open to fully close to fit Gland Packing for operation.

②

CAUTION

Table 4-1

CLIMAX Co.

Maker

#650

#750

#1901

−29 〜 ＋230

−40〜＋260

0 〜 ＋ 300

＋300 〜 ＋450

Red

Blue

Black

Black

Color

Services

THREE-BOND Co.

#400

Grease No.
Operating Temp.(℃)

GreaseAmine

Chloride

Acetylene

Asphalt

Stem

Acid

Chlorine

Vinyl Chloride

Coke oven gas

General highAlkaliFood

General Gas

Coal tartemperature fluid

Alcohol

BleachHydrocarbon

Steam

Ammonia Cyanide

Mineral Oil

Phosphorus

Co

Milk

Freon

Water

Brine

PaintsSulfur

Shape

Stick

Stick

[Note] No Lubricator is installed for the services fluid temperature is lower than -40℃.

8

Stick

Bulk (Can)(5) When Hand Wheel is mounted, be sure Handle is set to the Neutral" or auto operation position which does not restrain Valve opening.
(6)

Carry out loop test with the Controller to check that the Valves open or close smoothly.



CAUTION
4. 2
(1)

①
②
③

If the Valves must be heated up, increase the temperature andpressure gradually without changing them rapidly.
Heating up speed shall be less than 100℃/Hr.
During heating up, be sure to avoid sudden operation.

Greasing to Gland Packing
To use Braided Packing, it is required to use Greases to elevate the sealing and lubricating
property on Valve Stem.

(2)

The greasing device to inject the Grease is called Lubricator.
Fig. 4-1 shows the construction of Lubricator.

(3)①

To supply the Grease in routine work, follow the procedure below.
Turn the Handle clockwise to make the Spindle closed.
(If the Pressure Screw is removed holding the Spindle open, Grease may flow out reversely
by internal pressure from Valve Body.)②

Take out the Pressure Screw from Cylinder.

③

Insert designated Grease from this open port.
Use the designated Grease specified on the Name Plate attached on Actuator④

Compress the Grease into the Lubricator by the Pressure Screw.

⑤

Under compressing the Grease by Pressure Screw, turn the Handle counter-clockwise to
make the Spindle open. Then compress the Grease further by Pressure Screw. After compressing, turn the Handle clockwise and close the Spindle.
・Repeat above operation ③, ④, ⑤ several times and fill the Grease into the Connection
Pipe and Cylinder.



CAUTION

Do not fill the Grease to strong or to much to prevent over flow from
Bonnet Staffing Box or to prevent the damage of Gland Packing itself.
Pay attention the over flow from Staffing Box, Guide Bush and/or
Valve Stem when greasing.

⑥

Turn the Handle clockwise to make the Spindle closed and Greasing is completed.

⑦

After greasing, open and close the Valves several times (around 10 times) to create uniformed grease film between Gland Packing and Valve Stem.

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Fig.4

Lubricator

No. Part Name
1
2
3
4
5
6
7
8
9
10
11
12

4. 3

Body
BonnetSpindleGland Nut
HandleWasherLock Nut
Connection Pipe
CylinderPressure screw
GasketO-RingFor low pressure(600LB and lower)

Check and MaintenanceTo maintain maximum efficiency on your Control Valves, it is recommended to check or proceedmaintenance work as follows. (See Paragraph 6. Trouble shooting on page 20-21)(1)Daily Check
Check leakage, abnormal sound, vibration and/or hunting(2)

Periodical Check ……………………………………………………………………… [Annually]
Check each parts of the Valves, re-tighten the Gland and replenish/replace Grease if necessary.

(3)

Overhaul ………………… [Body: Once in every 2 years, Actuator: Once in every 5 years]
Disassemble the Valves and check the internal parts. (See Chapter 5)

WARNING

10

When leakage is found from the Valve or piping, Do Not Touch or
Access to the fluid until the safety is confirmed by proper responsible
person.

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5 Disassembling & Re-assembling
Following is recommended procedure to disassemble or re-assemble Valves.
①②



CAUTION

③
④
⑤
⑥

5. 1

Please prepare following spare parts available before disassembling: Gland Packing, Gasket Packing, Seal-Ring (Model BS andModel BSH) and Back-up Ring (Model BS).
Do not reuse the used Gland Packing, Gasket Packing, Seal-Ring(Model BS and Model BSH) and Back-up Ring (Model BS).
Prepare required Tools in advance.
Never disassemble the Valves on system under existing insidepressure or before cooling down of the Valves completely.
Do not turn the Valve Stem when the Valves are closed.
On Model 2800 spring diaphragm Actuator, Do Not Turn the
Spring Adjuster. Turning of Spring Adjuster makes the change of
Spring Range limit, upper and lower.

Split of Actuator from Valve Body (See. Fig. 5-1)



WARNINGTo disassemble the Valves on system line, Close the line and Release
all the system pressure in advance.

(1)

Place fitting mark on each connecting parts before disassembling.

(2)

Hold the Valve Plug at full open position depressurizing the supply pressure to zero on direct
action Actuator or supplying Air pressure on reverse action Actuator.

(3)

Loosen Stem Nut and Pointer together and go
downward, then lock. On Actuator size N33 and larger,

Fig.5-1 Removing Actuatorlower the Locking Plate together.
Thread size of Valve Stem and Top Stem is as follows.

Actuator size

(4)

ThreadN28

M9, P1. 25

N33

M12, P1. 75

N40

M18, P2. 0500

W3/4-10650

W7/8-9Pull down Valve Stem by turning Stem Nuts with pointerdownward from Top Stem.

(5)

Remove Yoke Bolts.

(6)

Pull up Actuator upright and split it from Valve Body.

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5. 2

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Disassembling and Re-assembling of Valve Body

To disassembling or re-assembling Valve Body, follow the procedure below. (See Fig. 5-2〜5-10).

Fig.5-2

12Model BS Body details

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Fig.5-2

Model BSH Body details

13
5. 2. 1Disassembling Procedure

5. 2. 1. 1

Model BS

(1)

Remove Stud Bolt Nuts.

(2)

Pull up Valve Plug together with Bonnet upright and split it from Valve Body.



CAUTIONBe careful not to drop Holder !
Holder might coming up together with Valve Plug.

(3)

Loosen Gland Nuts and release the tension of Gland Packing.

(4)

Pull down Valve Plug from Bonnet.

(5)

Remove Gland Bushing, Gland Packing, Lantern Ring and Packing Ring from Bonnet
gland.

(6)

Remove Cage from Body. In case Holder is remain in Body, remove both Holder andCage.

5. 2. 2. 2

Model BSH

(1)

Remove Stud Bolt Nuts.

(2)

Pull up Valve Plug together with Bonnet upright and split it from Valve Body.



CAUTIONBe careful not to drop Holder !
Holder might coming up together with Valve Plug.

(3)

Loosen Gland Nuts and release the tension of Gland Packing.

(4)

Pull down Valve Plug from Bonnet.

(5)

Gently pull out Guide from Valve Plug when it is coming up with Valve Plug.

(6)

Remove Gland Bushing, Gland Packing, Lantern Ring and Packing Ring from Bonnet
gland.

(7) Remove Cage from Body. In case Holder is remain in Body, remove both Guide and Cage.

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5. 2. 25. 2. 2. 1

Inspection of the Parts
Model BS

After disassembling, each parts should be cleaned and checked as follows.
(1)

Check seat surface of Valve Plug and Cage to be free from damage and/or deformation.

(2) Remove Seal-Ring from Holder, check Holder Groove to be free from damage and/or deformation.
(3)

Check Body and Bonnet wall thickness decreased. Check Body and Bonnet sealing surface of Gasket Packing and Gland Packing to be free from damage and/or deformation.

(4)

Check the appearance of Valve Plug, Stem, Holder, Cage and sliding surfaces of eachparts to be free from corrosion, erosion, damage and/or deformation.
If any damage and/or deformation are found on each parts, repair or replacement are required. To request repair or spare parts, be sure to inform MOTOYAMA sales office theserial numbers of the Valves specified on the Name Plate.

5. 2. 2. 2

Model BSH

After disassembling, each parts should be cleaned and checked as follows.
(1)

Check seat surface of Valve Plug and Cage to be free from damage and/or deformation.

(2) Remove Seal-Ring and Tension-Ring from Valve Plug, check Valve Plug Groove to be freefrom damage and/or deformation.
(3)

Check Body and Bonnet wall thickness decreased. Check Body and Bonnet sealing surface of Gasket Packing and Gland Packing to be free from damage and/or deformation.

(4)

Check the appearance of Valve Plug, Stem, Holder, Cage and sliding surfaces of eachparts to be free from corrosion, erosion, damage and/or deformation.
If any damage and/or deformation are found on each parts, repair or replacement are required. To request repair or spare parts, be sure to inform MOTOYAMA sales office theserial numbers of the Valves specified on the Name Plate.



CAUTION

To clean or repair Valve Plug sliding surface of Model BS or Guide
sliding surface of Model BSH using fine sandpaper, use sandpaper
grade #240 or fine one.
Never use File or Grinder to repair these parts.

15
5. 2. 3Re-Assembling Procedure
Model BS

Model BSH

Body size

150mm and smaller

200mm or larger

50 〜 350mm

Trim

See 5.2.3.1 (page 16)

See 5.2.3.2 (page 17)

See 5.2.3.3(page18,19)

BonnetSee 5.2.3.4 (page20)

On model BS, two (2) methods of assembling procedure are recommended depend on trim size and weight.



CAUTION① Be sure to apply anti-seize grease (NEVER-SEEZ or equivalent) on
Seal-Ring surface of the Gasket.
② For "Oil Free" requirement, apply Fluorine type grease (DAIFLOIL
or equivalent) slightly[Note] NEVER-SEEZ : products of BOSTICK, DAIFLOIL : products of DAIKIN

5.2.3.1(1)Model BS Trim Assembling [Port Size 150mm or smaller (See Fig. 5-4.)]

Install Spiral Wound Gasket (A) on Body lower groove and Serrated Gasket (B) on Body
upper groove. Install Seat-Ring on Gasket (A).

(2)

Install Seal-Ring on Holder.

(3)

Install Holder onto Cage fitting to Valve Plug. Pay attention not to damage or deform theSeal-Ring.

(4)

Lift up Valve Stem with Holder and insert it into Cage in the body.

(5)

Follow the procedure on Paragraph 5. 2. 3. 4 (1)〜(7) for further assembly.
①



CAUTION
Fig.5-4

16②

Be sure to install Seal-Ring and Back-up Ring in correct direction.
If the direction is not correct, it is not possible to get good sealing. (See Fig. 5-7.)
Keep the assembling in order. If install Cage, Holder with SealRing into Body first and then install Valve Plug, it is very easy todamage or deform Seat-Ring. (See Fig. 5-5.)

Assembling Procedure (Correct Way)

Fig.5-5 Assembling Procedure (Wrong Way)
5.2.3.2Model BS Trim Assembling [Port Size 200mm or larger (See Fig.5-6.)](1)

Install Spiral Wound Gasket (A) on Body lower groove and Serrated Gasket (B) on Body
upper groove. Install Seat-Ring on Gasket (A).
(2) Put Back-up Ring and Seal-Ring into Holder in order.
(3) Insert Valve Plug and Stem assembly into Cage.
(4) Install Holder onto Cage fitting to Valve Plug. Pay attention not to damage or deform theSeal-Ring.
(5) Follow the procedure on Paragraph 5. 2. 3. 4 (1)〜(7) for further assembly.
①



CAUTION
Fig.5-6②

Be sure to install Seal-Ring and Back-up Ring in correct direction.
If the direction is not correct, it is not possible to get good sealing. (See Fig.5-7.)
Keep the assembling in order. If install Cage, Holder with SealRing into Body first and then install Valve Plug, it is very easy todamage or deform Seat-Ring. (See Fig.5-5.)

Assembling Procedure (Correct Way)

Fig.5-5 Assembling Procedure (Wrong Way)

Valve size 200A and larger

Fig.5-7

Seal Ring orientation

17


5. 2. 3. 3

Model BSH Trim Assembling (See Fig. 5-11.)



CAUTION(1)On Model BSH, outer diameter of Seal-Ring is slightly larger thaninner diameter of the Guide.
Insert Seal-Ring alone into Guide first and be sure to fit the Seal-Ringinto the Guide correctly without any gap or too loose.
Also confirm the slit of Seal-Ring not to be open widely. (See Fig. 5-8.)

Install Spiral Wound Gasket (A) on Body lower groove and Serrated Gasket (B) on Body
upper groove. Install Seat-Ring on Gasket (A).

(2)

Install the Guide. Confirm whether Guide is fitting Cage properly.

(3)Install Tension-Ring into the groove of Valve Plug. Then install Seal-Ring over theTension-Ring.

①



CAUTION②

Install the slit of Tension-Ring and the slit of Seal-Ring opposite
position, 180 degree apart.
If two slits are installed in closed position, sealing efficiency
would be decreased. (See Fig.5-9.)
When install Seal-Ring to Valve Plug, do not open the slit too
much.
Just open to fit outside diameter of the Valve Plug.
Seal-Ring is easy to be broken if opened too much.

(4) Install Valve Plug together with Seal-Ring and Tension-Ring into Guide slowly. Pay attention not to deform Seal-Ring.



CAUTION

Seal-Ring slit is open slightly by Tension-Ring.
When insert Valve Plug into Guide, close Seal-Ring slit by fingers.
It may not possible to insert Valve Plug into Guide without closing
Seal-Ring slit and it may damage Seal-Ring itself. (See Fig.5-10.)

Please install the slit position of Seal-Ring to be rectangular against body flow direction. (SeeFig. 5-12.)(5)

18

Follow the procedure on Paragraph 5. 2. 3. 4 (1)〜(7) for further assembly.


Fig.5-8

Seal-Ring Check before Assembling

Fig.5-9 Orientation of Seal-Ring and Tension-Ring

Fig.5-11

Fig.5-10

Insert of Valve Plug

BSH Assembly procedure
Fig.5-12 Body and Seal-Ring poshition19
5. 2. 3. 4
(1)





Assembling of Other Parts

Install Serrated Gasket (C) on Holder (Model BS) or Guide (Model BSH) and then install
Bonnet. Be sure Body, Cage, Valve Plug and Bonnet are installed correctly in straight andin concentricity.

(2)

Apply anti-seize grease on Stud Bolts and tighten Nuts slightly.

(3) Be sure to check the smooth movement of Valve Stem up and down. Insert Gland Packing
one by one into Bonnet Gland with applying grease on it. (See Fig. 5-13 and Table 4-1 onpage 8 ) Be sure to install each Packing uniformly around the Stem. On braided Packing,each cut end should be placed opposite position, 180 degree apart.

Fig.5-13 Gland Packing
PTFE V Packing(4)

PTFE＋Braid Packing

Braid Packing

Install Gland Bushing, Wiper and Gland Flange in order. Tighten Gland Nuts alternately
and uniformly. Required torque is as follows.

Unit: N-cm(kgf-cm)

Actuator size

PTFE V-Packing (+Braid Packing)Braid Packing

N28〜N33S

100〜500 (10〜50)

200〜800 (20〜80)

N40〜650150〜700 (15〜70)

1000〜2500 (100〜250)[Note] Required torque is varies depend on type of Gland Packing, service condition, temperature andpressure. This table shows standard torque for reference.

20

(5)

Install Stem Nuts and Pointer.

(6)

Tighten Stud Nuts alternately and uniformly.

(7)

Be sure to confirm the smooth movement of Valve Plug (Valve Stem) up and down.







①



CAUTION

When confirming Valve Plug movement up and down, be sure to
move within the range of rated lift of the Valves.
If Plug was lifted up too much, Seal-Ring may be damaged onModel BS and Seal-Ring might be getting off from Guide on
Model BSH.
Pay attention not to move too much.
② When re-assembling, be sure to change all the Seal-Ring, Gland
Packing, Gasket Packing and Back-up Ring (Model BS) with thenew parts.
③ Pay attention not to damage Valve Plug sliding surface, Holder
groove inner surface and new Seal-Ring on Model BS. On Model
BSH, pay attention not to damage Guide sliding surface, Valve
Plug groove and a new Seal-Ring.
④ Never apply greases onto Seal-Ring for both Model BS and Model
BSH.

21



６

Trouble Shooting
Following is a list of general Troubles, Causes and Corrective Actions in routine operation ofControl Valves.

Table 6-1

TroublesValve fails to operate.

No signal nor supply air pressure

Vibration or Noise

Air pressure source (compressor) fault

Corrective action
Check compressor
Check Air piping

Clogged or leaking on Air piping

Check Air piping

Pressure Regulator Valve fault

Check and repair pressure Regulator

Controller fault

Check Controller

Clogged or leaking on signal Air piping

Check Air piping

Pilot Valve in Positioner fault

Check and repair Pilot Valve

Large leakage on Actuator

Check Actuator (Diaphragm)

Valve Stem or Guide stick

Disassemble Body and check, repair
or replace

Bend or breakage on Valve Stem

Repair or replace Valve Stem

Foreign matter entrapped on Seat or
between Guide clearance.

Disassemble and Check Valve port

Large clearance between Guide andPlug

Repair or replace Valve Plug and
Guide

Loose connections (Valve Stem andValve Plug, Valve Stem and Top Stem,Top Stem and Diaphragm).

Re-tighten connection

Poor de-aeration of fluid

De-aerate fluid

Flashing at outlet of the Valve Plug

Change Valve type

Plug chatter at almost fully
closed position

Fluid flow to close Valve Plug (flowclose)

Change Valve Cv or Plug and Control
position

Shock waves occur at ValveoutletValve size too small (steam)

Enlarge Valve size

Insufficient Air source capacity

Add compressor

Pressure Regulator fault

Repair or replace pressure Regulator
Valve

Inappropriate resistance or volume ofController

Install Valve or volume tank in signal
circuitController fault

Check Controller

Positioner fault

Check Pilot Valve
Tighten Positioner connections

Large friction on Valve Stem

Check and repair Valve Stem andGuide

Large friction on Gland Packing

Replace Packing

Resonance with fluids turbulent wave
motion (fluctuations in stem's thrust
due to changes in fluid pressure)

Reduce differential pressure Change
Actuator, higher rigidity Install rectify
straight pipe on upstream

No supply Air pressure
No signal Air pressure
No Positioner output

Vibration and noise in all
range of opening

Supply Air pressure fluctuates
Valve fails to operate.

Presumed causes
Large leakage on Air piping

Valve no movement even Air
press is working on Actuator

22

Trouble Shooting

Signal Air pressure fluctuates

Neither supply Air nor signal
Air pressure fluctuates, but
Valve hunts

Too Slow Action

TroublesToo slow stroke both direction

Too slow stroke, one way

Large hysteresis error

Valve no move beyond certain
travelLarge Leakage

Valve Stem fully closed position



Presumed causes

Control position changed,
range ability decreased

Leakage from Gland Packing

Disassemble and clean

Clogged guide with slurry or solids
Deteriorated
Packingandhardened

Change Valve type (Angle type)

gland

Change Packing and grease
Change Packing material

Thrust by large differential pressure to
Plug

Install Positioner

Actuator Air volume is big

Install Positioner or booster

Air leakage from Actuator

Check Actuator

Valve Stem and Guide, no alignment

Check Valve Stem alignment

Deteriorated
PackingChange Packing

andhardened

gland

Install big Actuator

Foreign matter entrapped in Valve
Plug

Disassemble and clean up

Clogged Valve Stem or Guide withslurry or solid

Disassemble and clean up

Loose connection of Positioner or insufficient tightening

Re-tighten and re-adjust

Manual handle position is not set at"NEUTRAL"

Set Handle position "NEUTRAL"

Lack of supply air pressure

Check supply air pressure

Corrosion, erosion or damage on
Valve Seat

Check Seat and repair or lap

Cavity in Valve Body

Repair or replace Body

Corrosion or erosion of Gasket (A)Change Gasket

Abrasion deformation,
Seal-Ring

Impossible to move to fully
closed position

Corrective action

damageofChange Seal-Ring

Incorrect flow direction

Correct flow direction

Large differential pressure

Increase actuator power

Foreign matter entrapped in Valve
Plug

Disassemble and clean up

Guide or port seizure

Repair or replace damaged parts

Corrosion or erosion of Valve Plug or
Cage

Change Valve Plug or Cage

Loose gland Nut

Re-tighten uniformly

Deteriorated and hardened Gland
PackingChange Packing. Change Packing
material

Incorrect insert of Gland Packing

Re-insert correctly

No Grease

Add Grease

Corrosion, erosion or damage of Valve
Stem

Repair or change Valve Stem

[Caution] If any improvement can not be made even by taking above mentioned corrective actions, Please contact oursales office for further solution.

23

７



Recommended Spare Parts(1)

All the parts of Control Valves are designed and manufactured utilizing Motoyama's flow
Control technology accumulated over past years. To continue stable operation of Control
Valves, it is recommended that the following genuine parts should be changed periodicallyas recommended in Table 7-1.

Table 7-1

Component

Overhaul Internal and Recommended Spare Parts

Replacement Part

Disassembling
Interval

Replacement Interval

2yearsChange the parts when disassembled.
Tension-Ring (BSH Type) may
not need to be changed every 2
years. (same as BP Type)

5yearsCheck and change when necessary.

Gland Packing
Gasket Packing

Body

Seal-Ring(Model BS and Model BSH)
Back-up Ring (Model BS)
Diaphragm
Daisthread○
Daistat○
O-RingSeal-Packing
Dust Seal
R

R

Actuator(2) When ordering spare parts, be sure to inform us the Parts Name and the serial numbers of
the Valves which is specified on the Name Plate.



CAUTION24

Be sure to use the Genuine Parts only.
Also use the specified Grease described in this manual.
◆MOTOYAMA has no responsibility for the troubles in-correct or imitated parts and grease were used.





８ Disposal of Control Valves and Parts①



WARNINGBe sure to blow out all the pressures and fluids left in the piping
line before dismounting the Control Valves.
② When harmful fluid remains in the body of the dismounted Valve,disassemble the Body (See Para 5 on page 10) and clean up internals.
◆ Otherwise, human accident or environmental pollution may be induced.

(1) Basically, Control Valves component parts do not contain any harmful materials for pollution.
When necessary, scrap Control Valves as general metal-discarding materials.
(2)

When there is any discarding restriction for asbestos material, check the Model number of
Gland Packing and Gasket on the Name Plate, and if it is confirmed as asbestos type, takethe Gasket and Gland Packing out from the Body, then, discard it separately from othermetal parts.

25



Reference Data
Estimated Life Cycle of Control Valve Parts
Generally, estimated life cycle of Control Valves component parts are shown in following table.
Whereas, the life of each parts differ by temperature, pressure, frequency or operation and environment in service. It is recommended to use this table for reference for your consideration.
Accordingly, please be noted that estimated life cycle below do not mean the warranty value by
MOTOYAMA. Motoyama's general warranty period for Control Valves is one (1) year after shipment.

Estimated Life Cycle of Control Valves Parts
Part

No.

Life Cycle

Notes

1

Body

10years2

Bonnet10

Change Body if wall thickness decreased to 90% of
designed value

3

Valve Plug

5

4

Cage

5

Holder (Model BS)

5

Guide (Model BSH)

5

Change when there is a change in the Seal-Ringclearance (more than ＋0.05mm greater than spec)

6

Seal-Ring

2

Change on every overhaul

7

Back-up Ring
(Model BS 200mm and larger)

2

Change on every overhaul

Tension Ring (Model BSH)

5

Change when any damage found8

Valve Stem

5

(Valve Plug is welded to Stem)

9

Gland Flange

10

10Stud Bolt

5

Same for Nut

11

Gland Bolt

5

Same for Nut

12

York Bolt, York Nut

1013

Gasket2

Change on every overhaul

14

Wiper

5

Change when any damage or scratch found

15

Gland Bushing

10

16

Gland Packing

217Lantern Ring

10

18

Packing Ring

10

19

Yoke

10

20-1

Diaphragm Case

10

20-2

Diaphragm Cover

10

21

Diaphragm Stem

10

22

Diaphragm Plate

1023

Diaphragm Rubber

10

Change when any damage found24

Spring10Same as above25

Spring Seat

10

26

Adjustment Screw

5

27

Adjustment Guide

5

28

Seat Bearing

29

Daistat○, Daisthread○5

Change on every overhaul

30

Dust Seal, O-Ring, Seal-Packing

5Same as above

Actuator

Valve Body

5

26

Part NameR

Change when clearance became ＋0.1 mm larger
than design value

Change on every overhaul

5R

Control Valve Parts Name and Construction
Parts number on below sketch is the number of the Table "Estimated Life Cycle of Control Valve
Parts", page 24.
[Note] Some parts for reveres action type are not shown on the sketch.
See page 14 for details.

【Direct Action Actuator】
Model BS

Model BSH

This manual is supplied for information purpose only and should not be
considered certified marketability and conformability of this product.

27

Bulletin No.MIE-B4301A

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China, Korea, Taiwan, Singapore, Indonesia, Malaysia, Saudi Arabia◆当社は保証期間を原則として製品納入後１年としています。
◆The product will be warranted for one year after delivering this product in principle.
■本取扱説明書の記載内容は、商品の改良等のため予告なく変更することがありますので予めご了承下さい。
■MOTOYAMA is continuously improving and upgrading its product design, specifications and/or dimensions. Information included herein issubject to change without notice.

■本取扱説明書は正しい情報の提供を目的としたものであり、本製品の市場性または適合性の保証を証明するものではありません。
■This instruction manual is supplied for information purpose only and should not be considered certified marketability and conformabilityof this product.

202402 MSP