SPECS Globe Manual

Instruction and Operation Manual
Instruction and Operation Manual
Globe Valves
Doc.No.: SPECS-IOM-GV
Date: 08/2020
CONTENTS
1.
General
2.
Essential health & safety requirements of PED/Atex and solution
3.
Application scope and Technical Parameters
4.
Valve Structure
5.
Main Parts and Material
6.
Working Principle and Structure Description
7.
Valve Transportation
8.
Valve Storage
9.
Valve Installation
10.
Valve Operation and Maintenance
11.
Potential Failure and Troubleshooting
12.
Quality Warrant
13.
Servicing

Instruction and Operation Manual
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1. General
Thanks for your selection of SPECS's globe valve. As a type of pressure equipment, valve has
potential hazards of pressure and creation of explosive atmosphere resulting from leakage of
process fluid. For the safety purpose, user shall read this instruction to know what SPECS has
already taken into account in our design and manufacture, and what action shall be taken by user
according to essential health and safety requirements of European Directive 97/23/EC(PED) and
94/9/EC (Atex).
2. Essential health & safety requirements of PED/Atex and solution
2.1 What
’ s SPECS design idea
-Globe valve is designed as standard product, no consideration of each specific service
condition since its too wide.
-Globe valve is designed to BS1873, valve has adequate strength according to ASME B16.34
pressure-temperature rating. The globe valve was EC-type approved by
European Notified Body.
-Valve has different sealing materials in accordance with BS1873, which are
corrosion/wear resistance to certain type of fluid.
-Valve contains no light metal (such as Mg) and all parts are electricity conductive and
connected together to prevent ignite resource.
-Valve is designed with hand wheel, or gear operatoror electric actuator according to its size and
torque, and operation requirements.
2.2 What action user shall taken
2.2.1 General
2.2.1.1 In any occurrence, first ensure personnel safety.
2.2.1.2 Use the valves in accordance with ASME B16.34 pressure-temperature rating.
2.2.1.3 Make sure that the selected valve materials are corrosion/wear resistance to the service
fluid.
2.2.1.4 Where the service fluid is flammable/explosive, to limit the working temperature.
2.2.1.5 When performing Repair/maintenance operations, make sure that the valves are always
depressurized, vented and drained.
2.2.1.6 For actuator operated valves, make sure all supply lines (Electrical, hydraulic, Air) are
disconnected before starting any operation.
2.2.1.7 When performing Repair/maintenance operations, always use appropriate protection
e.g. protective clothing, (oxygen) masks, gloves, etc.
2.2.1.8 When performing Repair/maintenance operations, do not smoke, do not use any

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2
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portable no-Ex-proof electrical device in the area and do not use open fire without a valid work
permit.
2.2.1.9 Valve must periodically checked on:
-Tightness of bolted connection (body/bonnet, gland, flange connection).
-Corrosion/wear damages (crack, pitting, thickness of the valve).
-Make sure the valves are in fully open/fully closed position.
2.2.2 Specifics
Risk Preventive Action
Accidental contact with dangerous
service fluid*
Due to: Gasket or Packing Blow out
1. See 2.2.1 General
2. Immediately replace Gasket and packing
after a Blow-out (use approved/suitable
materials only
3. Use recommended torque as in Table 5 and
Table 6
Accidental contact with dangerous
service fluid* during disassembly or
maintenance operations
1. See 2.2.1 General
2. After removal from the production line, open
and close valve to guarantee depressurized
cavity.
3. Drain any remainder fluid or substances with
suitable devices before disassembly.
Structural yielding of valves body
with consequent risk of contact with
dangerous service medium*,
explosion or fire
1. See 2.2.1 General
2. Create precautions to avoid additional forces
on the valves
3. Avoid absolutely water hammer: install
precaution devices if necessary (e.g. brakes,
anti shock devices, etc.)
4. Avoid submitting excessive vibrations to the
valves.
5. Avoid quick Pressure and/or Temperature
deviations.
Accidental contact with High or Low
temperature parts
1. See 2.2.1 General
2. Predispose apposite insulation on the valve.
3. Alert by means of warning signs about risk of
burns.
4. For Cryogenic-/High Temperature service
use only valves equipped with Cryogenic-/High
Temp. Extension.
Fire or explosion in case of service
with flammable fluids 1. See 2.2.1 General
2. Install only Ex-proof electrical devices in the
area
3. While performing maintenance in the area,
shut down all electrical devices.
Explosion in case of oxygen service 1. See 2.2.1 General
2. Install only Ex-proof electrical devices in the
area

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3. Install and use only valves completely
degreased.
4. Use valves only made with materials suitable
for oxygen service (see EN 1797-1)
Dangerous service fluid as there are: Toxic-, Corrosive-, Flammable-, High- or Low temperature etc. fluid
3. Application Scope and Technical Parameters
3.1 Scope
The series valves are widely used in petroleum, chemical, power plant and allied industries for
normal operation of pipeline system by cut off or connect the pipeline.
3.2 Technical Parameters:
Design standard: BS1873, ASME B16.34
Flange dimension: ASME B16.5
Structure length: ASME B16.10
Nominal pipeline size: 50~300 mm (2~18")
Nominal pressure: 20~250 bars (150~1500LB)
Temperature range: see Table 3
Medium: see Table 3
Body material: ASTM material, see Table 1
Trim material: API 600 trim material, see Table 2
Valve testing: API598
Applicable ATEX:
Ⅱ 2 GD c
4. Valve Structure
Please refer to Figure 1 and 2 for valve structure.

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Fig.1 150LB/300LB
Fig.2 600LB/900LB/1500LB/2500LB GLOBE VALVE STRUTURE
-
Globe valve dimensions and weight refer to SPECS.
GLOBE VALVE STRUTURE

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5. Main Parts and Material
The user or the pipeline system designer mustselect valve body material and the class according
to the working temperature, working pressure, the type of fluid and standard temperature-
pressure rating as specified in ASME B16.34. The manufacturer takes only incoherence of user
selected material and valve class with the working condition.

Instruction and Operation Manual
Table 1 Valve main parts and material
ITEM PART NAME CARBON STEEL ALLOY STEEL STAINLESS STEEL
1 Body A216 WCB A352 LCB A352 LCC A217 WC6 A217 C5 A351 CF8 A351
CF8M A351 CF3 A351 CF3M A351 CF8C
2 Seat Ring A105 A350 LF2 A350 LF2 A182 F11 A182 F5 A182 F304 A182
F316 A182 F304L A182 F316L A182 F321
3 Disc A216WCB A352 LCB A352 LCC A217 WC6 A217 C5 A351 CF8 A351
CF8M A351 CF3 A351 CF3M A351 CF8C
4 Disc Thrust Plate A276 420 A276 304 A276 304 A276 420 A276 304 A276 316 A276 304L A276 316L A276 321
5 Disc Nut A276 410 A276 304 A276 304 A276 410 A276 304 A276 316 A276 304L A276 316L A276 321
6 Stem A182 F6 A182 F304 A182 F304 A182 F6 A182 F5 A182 F304 A182
F316 A182 F304L A182 F316L A182 F321
7 Bonnet Bolt Nuts A194 2H A194 4 A194 4 A194 4 A194 4 A194 8
8 Bonnet Bolts A193 B7 A320 L7 A320 L7 A193 B16 A193 B16 A193 B8
9 Gasket CL150-300 304+Graphite 304+Graphite 304+Graphite 304+Graphite 316+Graphite
CL600-2500
Ring Joint 304 304 304 304 316
10 Backseat Bushing A276 410 A276 304 A276 304 A276 410 A276 304 A276 316 A276 304L A276 316L A276 321
11 Stem Packing Braided Graphite &
Die formed Graphite Ring Braided Graphite & Die formed Graphite Ring Braided Graphite & Die formed Graphite Ring
12 Bonnet A216 WCB A352 LCB A352 LCC A217WC6 A217 C5 A351CF8 A351
CF8M A351 CF3 A351 CF3M A351 CF8C
13 Eye Bolt Pins Carbon Steel A276 410 Stainless Steel
14 Gland A276 410 A276 304 A276 304 A276 410 A276 304 A276 316 A276 304L A276 316L A276 321
15 Gland Flange A216 WCB A352 LCB A352 LCC A217 WC6 A217 C5 A351CF8 A351
CF8M A351 CF3 A351 CF3M A351 CF8C
16 Gland Eye Bolts A307 B A320 L7 A320 L7 A193 B16 A193 B16 A193 B8
17 Eye Bolt Nuts A194 2H A194 4 A194 4 A194 4 A194 4 A194 8 A194 8 A194 8 A194 8 A194 8
18 Yoke Bush A439 D-2 A439 D-2 A439 D-2
19 Screw Carbon Steel Carbon Steel Stainless Steel
20 Handwheel Ductile Iron Ductile Iron Ductile Iron
21 Handwheel Nut Carbon Steel Carbon Steel Stainless Steel
22 Washe
r
Carbon Steel Carbon Steel Stainless Steel
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Instruction and Operation Manual
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Table 2 Common used trim material
API600 Trim
No. Seat ring Disc sealing Stem Back seat
1 ER410 ER410 ASTM A182 F6a ASTM A182 F6a
2 304 304 ASTMA182 F304 ASTMA182F304
5 STL STL ASTM A182 F6a ASTM A182 F6a
8 STL ER410 ASTM A182 F6a ASTM A182 F6a
9 Monel Monel Monel Monel
10 316 316 ASTM A182 F316 ASTMA182F316
12 STL 316 ASTM A182 F316 ASTMA182F316
Table 3 body material suitable for fluid and temperature range
ASTM
A216-
WCB
ASTM
A352-
LCB
ASTM
A352-
LCC
ASTM
A217-
WC6
ASTM
A217-
WC9
ASTM
A351-
CF8
ASTM
A351-
CF8M
ASTM
A351-
CF3
ASTM
A351 -
CF3M
RECOMMEND
TEMPERATU
RE LIMITS
(℃)
-29~427
-46~ 343
-46~
343
-29~
593
-29~
593
-29~
537
-29~
537
-29~
427
-29~
454
APPLICATION
STEAM,
WATER,OI
L
VAPOUR,
GAS and
GENERAL
LOW
TEMPERATURE
SERVICE
STEAM,WATER,OI
L VAPOUR,GAS
HIGH
TEMPERATURE
SERVICE
STEAM,WATER,
OIL
VAPOUR,GAS
HIGH and LOW TEMPERATURE
SERVICE
CORROSION RESISTANCE
Note: where the process fluid is flammable/explosive, it must limit the working temperature of the
pipeline system.
6. Working Principle and Structure Description
6.1 Working principle
The series is globe valves. When hand-wheel rotate clockwise, the disc descends and the valve
shuts off; when rotate counter clockwise, the disc ascends and the valve opens.
6.2 Structure description
6.2.1 Flange end or but welding end may be selected as to purchaser optimum.
6.2.2 Packing seal structure and flexible graphite combination packing is used for the series
valve.
6.2.3 Class 150LB to 300LB valves use a reinforced flexible graphite gasket and 600to 2500LB

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valves use ring joint metal gasket.
6.2.4 Cone sealing is used for the valve and the seal material is selected to API 600 or to the
customer requirements.
6.2.5 F or big v alve , hand-wheel i s r eplaced b y gear opera t or
, plea s e s ee SPECS
’ s c atalogue ..
7. Valve Transportation
Valves are heavy and metal products, care shall be taken to avoid physical injury during
transportation. Cord and lift device and transportation tool shall be ready, valve package
inspected and broken package repaired. Packaging shall conform to specification
requirements, it is forbidden to rotate the hand-wheel when valve is packaged. Valve shall be in
full-close status. For mis-opened valve, the sealing surface shall be cleaned and valve re-closed
and ends of bore blocked. Actuator and valve shall be packaged
separately.
During transportation or lifting, cord shall be tied to the yoke, no tied to the hand-wheel or stem.
Valve shall be handled with care, no bump to other thing.
The paint, nameplate and flange sealing surface shall be protected during transportation,no drag
valve on the ground especially with the end sealing surface contacted the ground.Don't unpack
when the valve is not ready for installation at the construction field. The valve shall be placed at a
safety location against weather.
8. Valve Storage
8.1 Valve shall be stored in air and dry room with bore blanked for protection.
8.2 Long-time-stored valve shall be re-inspected prior to use. Close attention shall be paid
against sealing damage when removal of dirties for the cleanness of sealing surface. Of
necessary, valve shall be pressure tested once more.
9. Valve Installation
9.1 Carefully check valve identification against valve specifications before installation. Always
keep the fluid flow direction with the arrow identified on the body.
9.2 Check the inside of bore and the sealing surface before installation, any attached dirty
shall be removed with clean soft cloth.
9.3 Check the operational of actuator to prevent block before installation.
9.4 Valve operation device is recommended to be installed at location 1.2m from the ground
for convenient of operation. Where the center of valve and the hand-wheel is over 1.8m from the
ground, a platform shall be built for the frequently operated valve. For pipeline with

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9.5 numbers of valves, valves shall be installed on the same platform as likely as possible for
convenient of operation.
For single valve installed at location over 1.8m and less operated, apparatus may be used such as
chain-wheel, extension bar, move platform and move ladder etc. Where valve is installed
underground, extension bar or ground-well shall be set. For safety reason, the ground-well shall be
covered.
9.6 For valve installed on horizontal pipeline, the stem is suitable at uprightness position; or,
the downward stem shall be inconvenience for operation and maintenance, as well the valve is
liable to corrosion. If the ground valve slant installed, operation and maintenance shall also be
inconvenience.
9.7 When valves are installed in pipeline side by side, enough space shall be considerate for
operation, maintenance and dismantle. The clearance of hand-wheels shall not less than100mm;
in case of narrow clearance, valves shall be installed interleaving.
9.8 For valve with flange end, user shall select proper bolt, gasket according to the working
temperature, working pressure and fluid, equally fasten the bolts and nuts. Bolt shall be with full
thread and 8UN serial thread shall be used for bolt over 1 inch in diameter.
9.9 For valve with butt-welding end, user shall perform welding and post welding heat
treatment using qualified WPS and welder in accordance with the requirements of ASME B31.3.
10. Valve Operation and Maintenance
10.1 After installation and for the pressure test of the pipeline or the system, the disc must be
fully opened. It is not recommended to use the valve as adjustment of flow rate or emergent pressure
relief blow- off. SPECS is not responsible for damage, loss or expense arising out of
such usage.
10.2 Usually globe valves have no heat insulation structure, never touch the surface of valves to
prevent burn when the valve has a high/low surface temperature.
10.3 Dust, grease and medium residual trend to accumulate at the surfaces of body, and moving
parts such as stem, gearbox, the guide of yoke etc., wear and erode the valve, and even
generate friction heat that is dangerous in explosive atmosphere, and shall be cleaned frequently
according to the
working conditions.
10.4 After put into service, valve shall be checked and maintained periodically especially for the
situation of sealing surfaces and worn, the age of packing and the corrosion of body. In

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case of such situation, valve shall be repaired or replaced. It is suggested that inspection and
maintenance of valve shall be perform every three months provided the fluid is water or oil,every
month or to local law provided the fluid is strong corrosive.
10.5 When performing Repair/maintenance operations, user shall use valve packing, gasket, bolt
and nut of the same size and material as the original one. Valve packing and gasket may be
ordered as spare parts for maintenance and replacement. It is forbidden to open the bonnet or
replace the bolt, nut or packing when the valve contains pressure. After
replacement of packing, gasket, bolt and nut, valve shall be closure test prior to reuse.
10.7 User may repair the valve-sealing surface providing a successful closure test is performed
and the sealing is ok.
10.8 Generally valve trim prefers replacement to reparation. It is better to use provided part as
replacement. If part produced by valve manufacturer is not available due to emergency,user
shall produce the part to SPECS's technical documentation. SPECS takes no responsibility
for loss caused out of part produced other than SPECS.
10.9 It is not recommended for reparation of valve pressure-containing part by user. If the
pressure-containing part is used for a long time and consequently defection occurs and affect
safety use, user shall replace the valve with a new one.
10.10 Welding repair on valve online is forbidden.
10.11 The online valve shall not be knocked, walked on or used as weight support.
11. Potential Failure and Troubleshooting

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Failure (risk) Cause Troubleshooting
Leakage of packing 1. Gland flange nuts loose
2. Rings of packing not
enough
3. Packing aged or failure
4. Stem sealing damaged
1. Equally tighten eyebolt nuts
2. Add packing
3. Replace packing
4. Stem shall be maintained
periodically by reparation or
replacement conjunction with
the maintenance of pipeline
Leakage between sealing
surfaces
1. Dirties between sealing
surfaces
2. Sealing surfaces damaged
1. Clean sealing surface
2. Repair the sealing surfaces
Operation failure
1. Packing too tight
2. Thread of stem nut over
worn
3. Stem bent
4. Foreigner existence between
stem and stem nut or gland
1. Proper loose gland flange nuts
2. Replace stem nut
3. Rectify or replace stem
4. Clean foreign matter
Leakage between bonnet
flanges
1. Bonnet bolts loose
2. Bonnet gasket failure
1. Proper tighten bonnet nuts
2. Replace bonnet gasket
Body and bonnet broken
and leaked
1. Water hammer
2. Fatigue
3. Freezing broken
1. Carefully operation to prevent
suddenly stopping pumping and
rapidly shutting.
2. Replace valve that exceeds
guarantee period or is found with
early fatigue defection
3. Drain away water in winter
12. Quality Warrant
12.1 SPECS warrants its valves
the date of delivery to the original customer, against defects in material and workmanship under
proper and normal use and service and not caused of resulting from improper

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application or usage, improper installations, improper maintenance and repairs, modifications or
alterations.
12.2 Purchaser shall give notice to SPECS upon finding of any defect or assuming defect, SPECS has
privilege to check the facts of the defect
12.3 SPECSsole obligation under this warranty shall be limited to the follows:
—repair of the material or,
—replacement of the parts and materials or,
—refund the purchase price or collect the defected products from the original purchaser.
12.4 SPECSisnotresponsible to claims caused from unexpected natural disaster such as
earthquake, typhoon of any kind arising out of the defect.
12.5 The scope and limitation of warranty can be changed through the agreement between
SPECSand purchaser.
13. Servicing
13.1 Where contractually specified, SPECS may provide field installation and adjustment.
13.2 SPECS will trace the quality of sold valve and provide service to customer requirements..