GE gea-19369a, 41005 Technical Specifications
GE Oil & Gas
41005 Series
Masoneilan* Cage Guided, Balanced
Globe Valve Tech Spec
Technical Specifications
09/2013
2 | GE Oil & Gas
Contents
1. General .............................................................................4
1.2 Serial Plate ...............................................................................................4
1.3 After Sales Service .......................................................................................4
1.4 Spare Parts ..............................................................................................4
1.5 Actuator and Other Accessories ..........................................................................4
2. Numbering System ...................................................................5
3. Installation ..........................................................................6
3.1 Cleanness of Piping ......................................................................................6
3.2 Isolating By-Pass Valve ...................................................................................6
3.3 Heat Insulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4 Hydraulic Test and Cleaning of Lines ......................................................................6
3.5 Flow Direction ...........................................................................................6
4. Disassembly .........................................................................7
4.1 Removal of Actuator .....................................................................................7
4.2 Opening of the Pressurized Chamber .....................................................................7
4.3 Disassembly of Valve Plug Stem ..........................................................................8
4.4 Disassembly of the Auxiliary Pilot Plug ....................................................................8
5. Maintenance – Repair ................................................................9
5.1 Packing Box ..............................................................................................9
5.2 Repair of Parts ...........................................................................................9
6. Valve Reassembly ...................................................................11
6.1 Pinning the Valve Plug Stem .............................................................................11
6.2 Assembly of Ring or Spring-Energized Seal Ring ..........................................................12
6.3 41405 Valve Plug and Cage Assembly ....................................................................13
6.4 Assembly of the Parts Inside the Valve Body .............................................................13
6.5 Assembly of Bonnet .....................................................................................13
6.6 Tightening of Body Stud Nuts ............................................................................14
6.7 Assembly of Packing Box ................................................................................15
7. Actuator ...........................................................................16
7.1 Coupling of Actuator Type 88 No. 6 ......................................................................16
7.2 Coupling of Actuator Type 87 No. 6 ......................................................................16
7.3 Coupling of Actuator Type 87 No. 10, 16 and 23 ..........................................................16
7.4 Coupling of Actuator Type 88 No. 10, 16 and 23 ..........................................................17
7.5 Coupling of Air-to-Extend Actuator (Type 37) .............................................................18
7.6 Coupling of Air-to-Retract Actuator (Type 38) .............................................................18
7.7 Other Types of Pneumatic Actuators .....................................................................18
Body Sub Assembly .....................................................................21
41005 Series Cage Guided, Balanced Globe Valve Tech Spec (September/2013) | 3
1. General
Important
This document contains all the instructions required for the installation, operation and maintenance of the
equipment.
Regular maintenance, strict observance of these instructions and the use of manufacturer’s replacement parts will
guarantee optimum operation and reduce maintenance costs.
1.1 Scope
The following instructions are designed to guide the user
through the installation and maintenance of the 41005
series valves for all sizes and all pressure classes.
1.2 Serial Plate
The serial plate is usually fixed to the side of the actuator
yoke. It indicates, amongst other things, the type of valve,
the pressure class, the material used for the pressurized
chamber and the air supply pressure of the actuator.
1.3 After Sales Service
GE offers it clientele an After Sales Service comprising
highly qualified technicians, for the operation,
maintenance and repair of its equipment. To benefit from
this service, contact our local representative or the After
Sales Service of the factory whose address is given at the
end of the document.
1.4 Spare Parts
When carrying out maintenance operations, only
manufacturer’s replacement parts must be used,
obtained through our local representatives or our
Spare Parts Service.
When ordering spare parts, the model and serial
numbers indicated on the manufacturer’s serial plate
must be given.
The recommended spare parts are indicated in the parts
list included in this instruction manual on page 20.
1.5 Actuator and Other Accessories
The valve is equipped with an actuator; like all the other
valve accessories, actuators are the subject of special
instructions which provide information on the electric
and pneumatic connections. The instruction manuals
to be used for standard actuators are No. ER30004E for
types 37/38, No. ER8788 for types 87/88.
4 | GE Oil & Gas
2. Numbering System
Actuator
(2 Digits)
Actuator Type
and Action on Air
Failure
Conventional
37 – Open
38 – Close
Cylinder
51– Double Acting
52 – Open
53 - Close
Multispring
87 – Open
88 – Close
Body
Series
41
Cage
guided
globe
Balanced Plug
Seal Type
0. Undefined
3. Pressure
energized
PTFE seal ring
4. With pilot
5. With seal ring
6. With PTFE
seal
9. Graphite seal
ring
Body S/A (5 Digits)
Trim Type/Characteristic
0. Undefined
1. Standard cage/Linear
2. Standard cage/Equal
percentage
3. Lo-dB
4. Lo-dB® single stage with
5. Lo-dB® double stage/Linear
6. VRT (stack) TYPE S/Linear
7. VRT (stack partial)/Type S/
®
/ anticavitation single
stage/Linear
diffuser/Linear
modified percentage
Design
Series
5 A. Angle Body
Optional Config.
EB. Extension
bonnet
C. Cryogenic
extension
bonnet
8. VRT (cage) TYPE C/Linear
9. Anticavitation
double stage/Linear (1)
Note: This instruction manual describes all the standard options in the 41005 valve series. To satisfy the particular
41005 Series Cage Guided, Balanced Globe Valve Tech Spec (September/2013) | 5
conditions of your application, GE may have had to
develop a special option which is the subject of an
additional clause to this instruction manual. In this case,
the instructions given in the additional clause always take
precedence over the general instructions.
3. Installation
3.3 Heat Insulation
In case of heat insulated installation, do not insulate the
valve bonnet and take protection measures related to
personal safety.
3.4 Hydraulic Test and Cleaning of Lines
During this operation, the control valve must not be used
as an isolating valve.
3.1 Cleanness of Piping
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 must be thoroughly
cleaned to insure leak-free joints.
3.2 Isolating By-Pass Valve
To allow for in-line inspection, maintenance and
removal of the valve without service interruption,
provide a manually operated stop valve on each side
of the control valve and a manually operated throttling
valve in the by-pass line.
This means that the valve must always be opened before
carrying out pressure tests in the process line, cleaning of
pipes, etc., otherwise equipment damages or destroying
of seal rings could result.
3.5 Flow Direction
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.
6 | GE Oil & Gas
4. Disassembly
4.1 Removal of Actuator
(Figures 15 and 16)
A. Remove the packing flange nuts (3) then remove
the packing flange (4) and the packing follower (23).
B. Check that the exposed part of the valve plug
stem (1) is clean enough for the bonnet (7) to be
removed easily.
Access to the internal components of the body should be
accomplished with the actuator removed. To carry out
this operation, follow the instructions below and refer
to the specific actuator instructions, reference ER 8788
for a type 87/88 actuator and ER 30004 E for the type
37/38 actuator.
4.1.1 Disconnection of instruments
Disconnect all mechanical couplings between the
positioner and the other instruments on the one hand
and the valve stem/actuator stem coupling on the
other hand.
4.1.2 Plug stems screwed into the actuator stem
In the case of air-to-retract actuators, apply sufficient air
pressure on the diaphragm to retract the stem completely.
Loosen the counter-nut, unscrew the stem.
Caution: During this operation, make sure that the
plug does not turn when it is seated. If the plug travel
is very small and there is a large amount of plug stem
inside the actuator, it may be necessary to remove
the yoke nut and lift the actuator so that the plug is
not touching the seat.
C. Remove the body stud nuts (8).
D. By means of a pad eye secured instead of the
actuator, lift the bonnet (7) up and separate it from
the valve body (18). During this operation, the valve
plug stem (1) must be pushed downwards so that
the valve plug remains in the valve body (18).
E. Remove the spring washer (17) and the body
gasket (10).
F. In the case of type 41305, 41375, 41505, 41605 and
41905 valves, remove the valve plug stem (1) and
valve plug (15) assembly from the cage by pulling the
valve plug stem upward, then remove the cage (16)
and “stack” (37) assembly for 41375 type valve.
Caution: Because of the cage gasket (31), the cage
can sometimes be lifted along with the valve plug. If
this should happen, press down on the cage so that it
remains in the body. If the cage is lifted along with the
valve plug, it could slip during handling and fall
In the case of a 41905 series valve [equipped with
a graphite ring (45)], make sure that the ring is not
damaged during the operation.
4.1.3 Stems attached with a stem connector
In the case of air-to-retract actuators, apply sufficient
air pressure on the diaphragm to retract the stem
completely.
Loosen the screws and remove the stem connector.
4.1.4 Removal of actuator
Disconnect all the ingoing and outgoing air and electrical
connections from the actuator. Loosen the yoke nut or
attachment screws and lift the actuator, making sure
that the concentricity and/or the thread of the bonnet is
not damaged.
4.2 Opening of the Pressurized Chamber
(Figures 17, 18 and 19)
Danger: Prior to disassembly, vent the process
pressure and isolate the valve if necessary.
Note: The valve must always be reassembled with new
packing rings and gaskets; before disassembly, make
sure that the appropriate parts are available.
G. In the case of a 41405 valve, remove the valve
plug and body cage assembly by pulling the valve
plug stem upward; in this case, the valve plug has
a shoulder which prevents the cage from falling.
Remove the valve plug from the cage by pulling on
the end of the valve plug stem.
H. Remove the seat ring (13) and the seat ring gasket
(14) from the valve body (18).
I. Remove the packing (6), the packing spacer (5) and
the guide bushing (22) from the bonnet (7).
Note: A packing spacer (5) is only mounted when the
bonnet has a side connection.
41005 Series Cage Guided, Balanced Globe Valve Tech Spec (September/2013) | 7
4.3 Disassembly of Valve Plug Stem
The valve plug stem is screwed and pinned into the
valve plug (15).
To dismount the stem, the valve plug must be held as
indicated below, taking care not to damage the guiding
surfaces; the plug stem pin (9) is then removed. By means
of flats or using a nut and counter-nut on the end of the
stem, unscrew the stem taking care not to apply
a bending moment which could deform it.
Cylindrical machining diameter of the jaw =
plug shank diameter: Dia. A
Tight only on
this no guiding
surface
Soft metal
vise draw
4.4 Disassembly of the Auxiliary Pilot Plug
When the valve is of the 41405 type.
In the case of 50, 80 or 100 mm (2”, 3” or 4”) valves
(Figure 17).
Exert a sufficient force on the auxiliary pilot plug (20) to
compress the spring washers (12). The retaining ring (19)
can then be removed, releasing the auxiliary pilot plug
and spring washers.
In the case of 150 to 400 mm (6” to 16”) valves (Figure 17).
To carry out this operation safely, screws of the diameter
and length indicated in the table in Figure 2 must be used.
Thread the socket head cap screws through the holes
in the auxiliary pilot plug (20). Tighten until the retainer
ring (19) can be removed. Loosen the screws gradually.
Remove the auxiliary pilot plug and the spring (12).
Stop pin
integrated in
vise jaw and
inserted into a
plug hole
Figure 1
Do not tight
on the plug
skirt
Valve size Pilot Dismounting Screws Size
Length
mm in. Qty.
Dia.
mm in.
150 6 2 57 2.25 1/4” – 20 UNC 2A
200 8 2 70 2.75
250 10 2 63.5 2.5
300 12 3 101.5 4
3/8” – 16 UNC 2A
400 16 3 63.5 2.5
Figure 2
8 | GE Oil & Gas
Loading...