GE mn-21000 Technical Specifications
GE Oil & Gas
21000 Series
Masoneilan* Top Guided Globe Valve with
Lo-dB* / Anti-cavitation capabilities
Instruction Manual
GE Data Classification : Public
THESE INSTRUCTIONS PROVIDE THE CUSTOMER/OPERATOR WITH IMPORTANT PROJECT-SPECIFIC
REFERENCE INFORMATION IN ADDITION TO THE CUSTOMER/OPERATOR’S NORMAL OPERATION
AND MAINTENANCE PROCEDURES. SINCE OPERATION AND MAINTENANCE PHILOSOPHIES VARY,
GE (GENERAL ELECTRIC COMPANY AND ITS SUBSIDIARIES AND AFFILIATES) DOES NOT ATTEMPT
TO DICTATE SPECIFIC PROCEDURES, BUT TO PROVIDE BASIC LIMITATIONS AND REQUIREMENTS
CREATED BY THE TYPE OF EQUIPMENT PROVIDED.
THESE INSTRUCTIONS ASSUME THAT OPERATORS ALREADY HAVE A GENERAL UNDERSTANDING
OF THE REQUIREMENTS FOR SAFE OPERATION OF MECHANICAL AND ELECTRICAL EQUIPMENT
IN POTENTIALLY HAZARDOUS ENVIRONMENTS. THEREFORE, THESE INSTRUCTIONS SHOULD
BE INTERPRETED AND APPLIED IN CONJUNCTION WITH THE SAFETY RULES AND REGULATIONS
APPLICABLE AT THE SITE AND THE PARTICULAR REQUIREMENTS FOR OPERATION OF OTHER
EQUIPMENT AT THE SITE.
THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT
NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH
INSTALLATION, OPERATION OR MAINTENANCE. SHOULD FURTHER INFORMATION BE DESIRED
OR SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE NOT COVERED SUFFICIENTLY FOR THE
CUSTOMER/OPERATOR'S PURPOSES THE MATTER SHOULD BE REFERRED TO GE.
THE RIGHTS, OBLIGATIONS AND LIABILITIES OF GE AND THE CUSTOMER/OPERATOR ARE STRICTLY
LIMITED TO THOSE EXPRESSLY PROVIDED IN THE CONTRACT RELATING TO THE SUPPLY OF THE
EQUIPMENT. NO ADDITIONAL REPRESENTATIONS OR WARRANTIES BY GE REGARDING THE
EQUIPMENT OR ITS USE ARE GIVEN OR IMPLIED BY THE ISSUE OF THESE INSTRUCTIONS.
THESE INSTRUCTIONS CONTAIN PROPRIETARY INFORMATION OF GE, AND ARE FURNISHED TO THE
CUSTOMER/OPERATOR SOLELY TO ASSIST IN THE INSTALLATION, TESTING, OPERATION, AND/OR
MAINTENANCE OF THE EQUIPMENT DESCRIBED. THIS DOCUMENT SHALL NOT BE REPRODUCED IN
WHOLE OR IN PART NOR SHALL ITS CONTENTS BE DISCLOSED TO ANY THIRD PARTY WITHOUT THE
WRITTEN APPROVAL OF GE.
Table of Contents Page
IMPORTANT: SAFETY WARNING .......................................................... .................................................1
1. INTRODUCTION .................................................................................................................................. 2
2. GENERAL 2
3. UNPACKING ......................................................................................................................................... 2
4. INSTALLATION..................................................................................................................................... 2
5. AIR PIPING 3
6. BODY DISASSEMBLY ........................................................................................................................... 3
6.1 THREADED TRIM ...............................................................................................................................................3
6.2 QUICK-CHANGE TRIM ....................................................................................................................................3
7. MAINTENANCE/REPAIR ..................................................................................................................... 3
7.1 THREADED SEAT RING REMOVAL ..............................................................................................................3
7.2 BUSHING REMOVAL ........................................................................................................................................4
7.3 LAPPING SEATS .................................................................................................................................................4
7.3.1 THREADED TRIM.............................................................................................................................4
7.3.2 QUICK-CHANGE TRIM ..................................................................................................................4
7.4 Lo-dB PLUG .........................................................................................................................................................5
7.5 PLUG STEM PINNING ......................................................................................................................................5
7.6 PACKING BOX .....................................................................................................................................................6
7.6.1 KEVLAR/PTFE PACK. RING (STANDARD) ...............................................................................6
7.6.2 EXPANDED GRAPHITE P. RING (OPTION)..............................................................................6
7.6.3 LE PACKING (LOW EMISSION) (OPTION) ...............................................................................7
7.7 SOFT SEAT PLUG ...............................................................................................................................................8
8. VALVE BODY REASSEMBLY ................................................................................................................ 8
8.1 THREADED TRIM ...............................................................................................................................................8
8.2 QUICK-CHANGE TRIM ....................................................................................................................................9
8.3 HIGH PRESSURE & ANGLE DESIGN ..........................................................................................................9
9. ACTUATORS ......................................................................................................................................... 9
9.1 TYPES 87/88 ACTUATORS .............................................................................................................................9
10. BELLOWS SEAL ASSEMBLY ............................................................................................................... 9
10.1 BELLOWS VALVE DISASSEMBLY............................................................................................................14
10.1.1 THREADED TRIM ....................................................................................................................... 14
10.1.2 QUICK-CHANGE TRIM ............................................................................................................14
10.2 REPAIR .............................................................................................................................................................15
10.2.1 PLUG / STEM BELLOWS / BONNET EXTENSION S/A ................................................ 15
10.3 PLUG AND SEAT RING SEATING SURFACES ....................................................................................16
10.4 BONNET REASSEMBLY ..............................................................................................................................16
10.5 VALVE BODY REASSEMBLY ......................................................................................................................16
10.6 ACTUATOR TO BODY S/A AND PLUG STEM ADJUSTMENT .......................................................16
Safety Information
Important - Please Read Before
Installation
The 21000 Series Control Valves instructions contain DANGER, WARNING, and CAUTION labels, where necessary, to
alert you to safety related or other important information.
Read the instructions carefully before installing and maintaining your control valve. DANGER and WARNING hazards
are related to personal injury. CAUTION hazards involve
equipment or property damage. Operation of damaged
equipment can, under certain operational conditions, result
in degraded process system performance that can lead to
injury or death. Total compliance with all DANGER, WARN-
ING, and CAUTION notices is required for safe operation.
This is the safety alert symbol. It alerts you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
About this Manual
• Theinformationin this manual is subjecttochangewithout
prior notice.
• Theinformationcontainedinthismanual,inwholeorpart,shall
not be transcribed or copied without ’s written permission.
• Pleasereportanyerrorsorquestionsabouttheinformationin
this manual to your local supplier.
• These instructions are written specifically for the 21000
Series Control Valves, and do not apply for other valves
outside of this product line.
Warranty
Items sold by General Electric are warranted to be free from
defects in materials and workmanship for a period of one
year from the date of shipment provided said items are used
according to GE's recommended usages. GE reserves the right
to discontinue manufacture of any product or change product
materials, design or specifications without notice.
This instruction manual applies to the
The control valves MUST BE:
• Installed, putintoserviceandmaintainedbyqualifiedand
competent professionals who have undergone suitable
training.
• Under certain operating conditions, the use of damaged
equipment could cause a degradation of the performance
of the system which may lead to personal injury or death.
• Changesto specifications,structure,andcomponentsused
may not lead to the revision of this manual unless such
changes affect the function and performance of the product.
21000 Series Control Valves.
Indicates a potentially hazardous situation which, if not
avoided, could result in serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury.
When used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, could
result in property damage.
Note: Indicates important facts and conditions.
• All surrounding pipe lines must be thoroughly flushed to
ensure all entrained debris has been removed from the
system.
© 2014 General Electric Company. All rights reserved.
Masoneilan 21000 Series Top Guided Globe Valve | 1
1st
2nd
1st
2nd
3rd
4th
5th
6th
Actuator Type
87 Spring Diaphragm
Air to Close
88 Spring Diaphragm
Air to Open
Body
Series
21
Plug Type
0. Undefined
1. Contoured
6. Soft Seat
7. Single Stage
Lo-dB/
Cavitation
Containment
8. Double Stage
Cavitation
Containment
9. Double Stage
Lo-dB
1. lntroduction
The following instructions should be thoroughly reviewed
and understood prior to installing, operating or performing
maintenance on this equipment. Throughout the text,
safety and/or caution notes will appear and must be strictly
adhered to, otherwise, serious injury or equipment malfunction
could result.
GE has a highly skilled After Sales Department available for startup, maintenance and repair of our valves and component parts.
Arrangements for this service can be made through your local GE's
Masoneilan representative or sales department. When performing
maintenance use only Masoneilan replacement parts. Parts
are obtainable through your local representative or spare parts
department. When ordering parts, always include Model and Serial
Number of the unit being repaired.
2. General
These installation and maintenance instructions apply to all sizes
and ratings of the 21000 Series control valves regardless of the
type of trim used.
21000 Series single ported top guided control valves are designed
with built in versatility making them well-suited to handle a wide
variety of process applications.
Standard construction offers a contoured plug (21100 Series) with a
threaded seat ring or a quick change seat ring. The heavy top plug
guiding provides maximum support to ensure plug stability.
A series of reduced area trim is available to provide wide flow
range capabilities in all valve sizes.
Tight Shutoff Class IV leakage is standard. Optional constructions
(one of which is the 21600 Series soft seat plug) meet IEC 534-4 and
ANSI/FCI 70.2 Class V and Vl requirements.
An optional Low Emission LE® Packing is available to assure
compliance with the fugitive emission containment requirements.
Replacing the conventional plug with the single stage Lo-dB
design (21700 Series) provides excellent noise attenuation or
anti-cavitation performance.
The 21800 Series double stage anti-cavitation valve is derived
from the 21700 single stage anti-cavitation valve through a
modification to the cage and plug. Substitution of the standard
Flow
Characteristics
0. Undefined
1. Linear
2. Equal
Percentage
3. Modified
Percent
Figure 1 - Numbering System
cage with an anti-cavitation cage permits the pressure drop to
be split between the two stages efficiently.
The 21900 Series double stage Lo-dB valve is also derived from
the 21700 single stage Lo-dB valve through a modification to the
cage and plug. Substitution of the standard cage, with a LodB cage permits the pressure drop to be split between the two
stages efficiently.
In the 21800/21900 Series designs, enlargement of the plug head up
to the cage diameter permits simultaneous throttling of the plug C
and the cage Cv. It also provides optimum allocation of the pressure
drop between the two stages along the entire plug travel.
Recommended spare parts required for maintenance are listed
in the Parts Reference table on page 17. The model number,
size, rating and serial number of the valve are shown on the
identification tag located on the actuator. Refer to Figure 1 for the
21000 series numbering system.
Seat Type
0. Undefined
4. Quick Change
5. Threaded
Optional
Configuration
A Angle Body
BS Bellows
Seal
EB Extension
Bonnet
C Cryogenic
Extension
Bonnet
3. Unpacking
Care must be exercised when unpacking the valve to prevent
damage to the accessories and component parts. Should any
problems arise, contact your local GE's Masoneilan representative
or sales department.
4. lnstallation
4.1 Before installing the valve in the line, clean piping and
valve of all foreign material such as welding chips, scale,
oil, grease or dirt. Gasket surfaces should be thoroughly
cleaned to ensure leak-proof joints.
4.2 To allow for in-line inspection, maintenance or removal of
the valve without service interruption, provide a manually
operated stop valve on each side of the 21000 Series
valve with a manually operated throttling valve mounted in
the by-pass line (See Figure 2).
4.3 The valve must be installed so that the controlled
substance will flow through the valve in the direction
indicated by the flow arrow located on the body.
• Withcontouredplug(21100/21600)
or Lo-dB plug (21700/21900) :flow-to-open
• Onanti-cavitationdesign(21700/21800) :ow-to-close
v
2 | GE Oil & Gas © 2014 General Electric Company. All rights reserved.
CAUTION
WARNING
CAUTION
WARNING
4.4 For heat-insulated installation, do not insulate the valve
CAUTION
WARNING
CAUTION
WARNING
CAUTION
WARNING
bonnet. Take necessary protective measures relate to
personal safety.
5. Air Piping
The actuators are designed to accept 1/4" NPT air supply piping.
1
/4" OD tubing (4 x 6 mm) or equivalent for all air lines. If the
Use
supply air line exceeds 25 feet in length (7 meters) or if the valve
is equipped with volume boosters, then 3/8" tubing (6 x 8 mm) is
preferred. AII connections must be free of leaks.
Do not exceed supply pressure indicated on serial plate located on
the yoke of the actuator.
6. Body Disassembly
Access to the internal components of the body should be
accomplished with the actuator removed. To remove the
actuator from the body, refer to the actuator instruction Ref.
GEA19530 for a type 87/88 multispring actuator.
Prior to performing maintenance on the valve, isolate the valve
and vent the process pressure. Shut off the supply air line and the
pneumatic or electric signal line.
6.1 Threaded Trim (Figure 12 or 14)
After removing the actuator, disassemble the body using the
following procedure :
A. If there is a leak detector connection on the lateral NPT
port of the bonnet, disconnect this piping as well.
B. Remove body stud nuts (10).
C. Remove bonnet (8), and plug stem (1) and plug (16) sub-
assembly together as one unit.
Note: Spiral wound body gaskets (11) are standard in the
21000 Series design and it is imperative that a new gasket
be installed each time the valve is disassembled.
D. Remove packing flange stud nuts (3), packing flange (4)
and packing follower (5).
E. Remove plug (16) and plug stem (1) sub-assembly from the
bonnet (8).
6.2 Quick-Change Trim (Figure 13 or 15)
After removing the actuator, disassemble the body using the
following procedure:
A. If there is a leak detection connection on the lateral NPT
port of the bonnet, disconnect this piping as well.
B. Remove body stud nuts (10).
C. Remove bonnet (8), and plug stem (1) and plug (16) sub-
assembly together as one unit.
D. Since the cage (13), seat ring (14) and seat ring gasket (15) are
held in place by the bonnet, they may now be removed.
Note: Spiral wound gaskets (11 & 15) are standard in the
21000 Series design and it is imperative that new gaskets be
installed each time the valve is disassembled.
E. Remove packing flange stud nuts (3), packing flange (4)
and packing follower (5).
F. Remove plug (16) and plug stem (1) sub-assembly from
the bonnet (8).
Care must be taken to avoid damage to the plug and plug
guide.
G. Remove old packing (6) [and optional lantern ring (7) if a
leak detection connection has been installed]. Refer to
Figure 5.
H. All components may now be inspected for wear and service
damage. After determining the maintenance required,
proceed to the appropriate Section of this instruction
manual.
7. Maintenance & Repair
The purpose of this section is to provide recommended
maintenance and repair procedures. These procedures assume
the availability of standard shop tools and equipment.
7.1 Threaded Seat Ring Removal (Figure 12 or 14)
Threaded seat rings (14) are installed tightly by the
manufacturer, and after years of service they may be difficult
to remove.
To facilitate removal, seat ring wrenches can be fabricated
to engage the seat ring lugs and adapted to a standard
wrench. If the seat ring is exceptionally resistant to removal,
the application of heat or penetrating oil should be helpful.
Care must be taken to avoid damage to the plug and plug
guide.
F. Remove old packing (6) [and optional lantern ring (7) if a
leak detection connection has been installed]. Refer to
Figure 5.
G. Bonnet (8), plug (16), bushing (12) and seat ring (14) may
now be inspected for wear and service damage. After
determining the maintenance required, proceed to the
appropriate Section of this instruction manual.
© 2014 General Electric Company. All rights reserved.
When using heating devices, ensure that proper safety
practices are observed. Flammability and toxicity of the
process fluid must be considered and proper precautions
taken.
7.2 Bushing Removal
The bushing (12) is press fit into the bonnet and does not
normally require replacement. If necessary, it may be pulled
or machined out. When machining the bushing out, care must
be taken to maintain proper dimensions and tolerances in the
Masoneilan 21000 Series Top Guided Globe Valve | 3
CAUTION
WARNING
CAUTION
WARNING
CAUTION
WARNING
bonnet. These will be furnished upon request.
CAUTION
WARNING
CAUTION
WARNING
7.3 Lapping Seats
Lapping is the process of working the valve plug against
the seat ring with an abrasive to produce a close fit. If
valve leakage is excessive, lapping becomes necessary. The
plug and seat ring seating surfaces should be free of large
scratches or other defects, and the contact surfaces of the
seats should be as narrow as possible. This may require
dressing both parts in a lathe. The seating surface angle of the
plug is 28 degrees and the seat ring is 30 degrees (relative to
the centerline axis). A good grade of fine grinding compound
is required for the lapping operation.
The compound should be mixed with a small quantity of
lubricant such as graphite. This will slow the cutting rate
and prevent tearing of the seating surfaces. The amount
of lapping required depends on the materials, condition of
seating surfaces, and accuracy of machining. lf a short period
of lapping does not visibly improve seating, there is usually no
advantage in continuing as excessive lapping may result in
rough seats. The only remedy is replacement or re-machining
of one or both parts. When lapping new plugs and seat rings,
begin with a medium fine (240 grit) and finish with a finer
grade (600 grit).
Note: Lapping should produce a line contact area, not the
entire surface, due to the difference in seat angles.
Before lapping, the plug and stem sub-assembly must be
concentric. (See pinning operation, section 7.5).
7.3.1 Threaded Trim (Figure 12 or 14)
1. CIean body gasket surface areas.
2. When seat has been removed, ensure that the sealing
surface in the body bridge and the threads are
thoroughly cleaned.
Note: A sealant compatible with the process should be
applied sparingly to the seat ring threads and sealing
shoulder.
3. lnstall and tighten seat ring using fabricated wrench
used for removal.
Do not over-tighten. Do not strike seat ring lugs
directly. This could distort the seat ring resulting in seat
leakage.
4. Apply lapping compound on the plug at several spots
equally spaced around the seating area.
5. lnsert the stem and plug sub-assembly carefully into
the body until it is seated.
6. Place bonnet (8) on the body and fasten the bonnet to the
body using four body stud nuts (10) spaced equally apart.
Apply slight pressure and tighten evenly.
Do not tighten nuts to final torque specifications at
this time. The bonnet is used temporarily for guiding
purposes only.
7. lnsert two or three pieces of packing (6) into the packing
box to assist in guiding the stem and plug during lapping.
8. Screw a drilled and tapped rod with a T-handle onto the
plug stem and secure with a locknut (see Figure 4).
Note: As an alternative, drill a hole through a flat steel
plate and fasten to the plug stem using two locknuts.
9. Apply slight pressure on the stem, and rotate the stem
in short oscillating strokes (around 8 to 10 times).
Repeat this step as necessary.
Note: The plug should be lifted and turned 90° each
time before repeating Step (9). This intermittent lifting is
required to keep the plug and seat ring concentric during
lapping.
Avoid over-lapping as this can cause damage to
the seating surface rather than improve leakage
performance.
10.After completion of the lapping operation, remove bonnet
and plug. The seating area of the seat ring and the plug
must be cleaned of all lapping compound in preparation
for reassembly. Do not remove seat ring.
7.3.2 Quick-Change Trim (Figure 13 or 15)
1. CIean body gasket surface areas.
2. Install a new seat ring gasket (15) and insert seat ring
(14) in the body.
Note: Gasket (15) is temporarily placed to hold the seat
ring during lapping.
It is imperative to use a new gasket or a test part
having the same geometrical characteristics in
order to ensure the correct position of the seat ring
during lapping.
This gasket (or similar part) can be kept after lapping
for future use.
The gasket used for lapping must not be reused for
the body reassembly.
3. Apply lapping compound at several spots equally
spaced around the seating area of the seat ring.
4. Insert the cage (13) into the body.
5. lnsert the stem and plug sub-assembly carefully into
the body until it is seated.
6. PIace bonnet (8) on the body.
Ensure that the seat ring (14), cage (13) and bonnet (8)
are properly aligned.
4 | GE Oil & Gas © 2014 General Electric Company. All rights reserved.
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