Eccentric Rotary Control Valve with PFA Liner
Instruction Manual
BHGE Dat a Classifica tion : Public
Page 2
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, BAKER HUGHES, A GE COMPANY (BHGE 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 BHGE.
THE RIGHTS, OBLIGATIONS AND LIABILITIES OF BHGE 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 BHGE REGARDING THE EQUIPMENT OR ITS USE ARE GIVEN OR IMPLIED BY THE ISSUE OF THESE INSTRUCTIONS.
THESE INSTRUCTIONS 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 TO ANY THIRD PARTY WITHOUT THE WRITTEN APPROVAL OF BHGE.
Masone ilan 31000 Series C ontrol Valve Ins truction Man ual | c
Page 4
Safety Information
Important - Please Read Before Installation
Masoneilan 31000 Series Valve 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, WARNING, 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
• The information in this manual is subject to change without
prior notice.
• The information contained in this manual, in whole or part,
shall not be transcribed or copied without BHGE’s written
permission.
• Please report any errors or questions about the information
in this manual to your local supplier.
• These instructions are written specifically for the 31000 Series
Valve, and do not apply for other valves outside of this
product line.
Life Period
The current estimated useful life period for the Masoneilan 31000
Series valve is 25+ years. To maximize the useful life of the product
it is essential to conduct annual inspections, routine maintenance
and ensure proper installation to avoid any unintended stresses
on the product. The specific operating conditions will also impact
the useful life of the product. Consult the factory for guidance on
specific applications if required prior to installation.
Warranty
Items sold by BHGE 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 BHGE recommended usages. BHGE reserves the right to
discontinue manufacture of any product or change product
materials, design or specifications without notice.
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.
This instruction manual applies to the Masoneilan
Valve.
The Valve and Actuator:
• MUST BE installed, put into service and maintained
by qualified and 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.
• Changes to specifications, structure, and components
used may not lead to the revision of this manual unless
such changes affect the function and performance of the
product.
• All air supply to the actuator must be turned off.
• All surrounding pipe lines must be thoroughly flushed
to ensure all entrained debris has been removed from
the system.
The following instructions are designed to assist maintenance
personnel in performing most of the maintenance required
on the 31000 Series valve and, if followed carefully will reduce
maintenance time.
Spare Parts
When performing maintenance always use Masoneilan
replacement parts. Parts are obtainable through your local
BHGE Representative or sales office. When ordering parts,
always include Model and Serial Numbers shown on serial plate.
The use of the assembly tools is recommended to simplify
disassembly and reassembly work. These are listed in Figures
2 and 3 and can be obtained from BHGE Masoneilan parts
department.
Service
BHGE has highly skilled service technicians available to assist
you in the operation, start-up, maintenance and repair of our
valves and component parts. Contact your nearest BHGE
Representative or sales office.
Training
BHGE regularly holds training programs to train customer
service and instrumentation personnel in the operation,
maintenance and application of our control valves and
instruments. To participate in one of these training sessions
contact your local BHGE Representative.
The statements and information given in these operating
instructions apply to all sizes in the 31000 Series control valves.
The model number, size and rating of the valve are shown on
the serial plate. Refer to numbering system hereafter to identify
the valve model.
3. Principle of Operation
The concept of the 31000 Series is based on the proven rotating
plug principle:
• The valve plug, which forms one unit with the valve shaft, can
rotate eccentrically in a free flow design, flanged valve body.
The seating surface of the plug has the shape of a segment of
a sphere.
• The midpoint of the spherical seating surface lies eccentrically
to the axis of the shaft so that there is no contact between
seat and plug even when the valve is only partially opened.
Wear is reduced to a minimum.
• Excellent sealing in the seat/plug closure is achieved by the use
of PTFE and PFA, provided as a standard feature on the 31000
Series. The seat is fixed in the valve body through its conical
outside shape. The plug shaft is connected to the actuator
with the help of a lever. The actuator is operated by means of a
rolling diaphragm with opposing spring.
Numbering System
1st2nd1st2nd3rd4th5th
310
Body
31
Actuator Mounting
(Type 35 Only)
1 Parallel to pipeline, air to close
2 Parallel to pipeline, air to open
Actuator Type
35 Spring-opposed
rolling-diaphragm
—
Series
—
Seat
Material
1 PTFE
2 Special
Not Assigned
0
Note: Actuator positions 1 and 2 are standard configurations.
View seen from actuator end. Other positions are available:
consult BHGE.
Masone ilan 31000 Series C ontrol Valve Ins truction Man ual | 2
Page 6
4. Unpacking
(bar)
°C
psi
218
145
232
Unpack valves and accessories carefully to avoid damage.
The control valves are packed in a clean state and the valve
openings are sealed with protective caps. The caps provide
protection against dirt and damage and should not be removed
until the valve is being fitted into service.
5. Installation
Before installing the valve, clean all piping carefully, removing all
dirt, grease, oil and other residues. The sealing surfaces between
control valve and piping must be cleaned carefully and checked
to ensure they are tightened properly. Flange gaskets should not
be used.
The valve must be fitted in the line so that the flow is through
the valve body in the direction of the arrow marked on the
housing. The arrow corresponds to flow to close direction. All
31000 Series control valves must be fitted in this manner since
flow assists in closing the plug.
6. Disassembly
Control valves, which have been in service should be thoroughly
cleaned before disassembly. Residues present inside the valve
can be harmful to health.
NOTE: All parts which come in contact with flow are
constructed of PTFE or PFA in standard versions of the
31000 Series. Particular care must be taken when handling
these parts since they can be easily damaged.
Prior to disassembly of the control valve, ensure that the valve
body has been depressurized. Accessories (positioner, airset
etc.) must be removed.
6.1 Actuator Disassembly (Figure 5a and 5b)
1. Remove the rear and front covers (118 & 121) of the actuator
by releasing the screws (119). If necessary screw out the
handwheel (141) after removing the Truarc ring (138) and
washer (139).
31000 Series valves are designed with a maximum operating
pressure of 232 psi (16 bar), this limit is set by the lining. The
bodies are available in different sizes in accordance with DIN
and ANSI standards. Before fitting the control valve, the plant
operator should ensure that the maximum pressure the valve
body will be subjected to will not exceed the allowed value.
Refer to the diagram below.
(16)
(15)
(10)
73
(5)
0
(0)
0-2050100 120150180
Pressure/Temperature Diagram
2. Move the actuator to its intermediate position with
compressed air.
3. Remove the indicator (154), clevis pin clip (122) and clevis pin
(124), release the lever cap screw (137).
4. Depressurize the spring barrel. If the valve is not supplied
with a positioner, remove screw (127) and shaft cover (126).
5. Remove the yoke screws (19) (Figure 1) and lift off the
1. Remove screws (17) and washers (18) and take off the
actuator connecting flange (12). In the case of models with
safety packing (Figure 4), remove the disk springs (24), upper
packing box ring (23), packing rings (21) and base ring (20).
2. Release the packing follower (9) using the packing tool
(Figure 2).
3. Remove the body bolt (14, 15, 16). The bonnet (2) can now
be lifted off when the plug is in the fully open position. To
remove the plug (3), carefully pull downwards.
4. Remove the packing follower (9) together with the O-rings
(10 and 11), disk springs (8), lower packing box ring (7) and
packing (6).
5. Carefully push the seat ring (4) from the valve outlet side into
the inside of the body and remove; also remove the O-ring (5)
from the body (1).
Check all parts for condition and degree of wear.
Once the packing (6), has been dismantled, it must not be
reused. To ensure satisfactory sealing of the shaft, use only
new, original packings from the manufacturer. It is strongly
recommended that the complete packing (6) including O-rings
(10 and 11) and seat Oring (5) be replaced each time the valve
is disassembled. When valves have safety packing (21), the
replacement of the packing rings and O-rings (25 and 26) is also
required.
7. Reassembly
7.1 Valve Body S/A Reassembly (Figures 1 to 4)
1. Insert the seat O-ring (5) into the body groove.
2. Slide in the seat ring (4) from the inside of the body into the
outlet side of the body with the shoulder of the seat facing
the body outlet port. Place the body on a bench. Put it where
its seat side flange contacts the cleaned surface of the bench.
Take care not to damage the sealing surface. The inlet flange
must be at the top. Using the seat assembly tool, press the
seat through the flange opening on the opposite side until it
seats securely on the shoulder. Remove the tool after fitting.
NOTE: Refer to Figure 3 for the reference number of the
seal ring fitting tool.
3. Insert the plug (3) into the bottom guiding bore of the body.
4. Place the bonnet (2) over the plug shaft onto the body and
handtighten the bolting (14, 15, 16).
5. To insert the packing into bonnet (2), screw the guide tube
into the body (Figure 2) up to the stop. Insert the complete
packing (6) via the shaft end of the shaft into the guide tube
until the packing has been fully inserted. It is essential that
the packing is aligned in accordance with the detail drawing,
(Figures 1 and 4).
6. Insert the lower packing box ring (7) and using the assembly
tool (Figure 2) slide the packing into the bonnet up to the
stop. The packing is correctly positioned when the lower
edge of the groove of the assembly tool reaches the top of
the guide tube.
7. Insert the seven disk springs (8) in accordance with Figures 1
and 4 and unscrew the guide tube (Figure 2).
8. Insert the O-rings (10 inner, 11 outer) into the grooves of the
packing follower (9) and screw the packing follower in up to
its stop using the assembly tool (Figure 2).
If the control valve is equipped with a safety packing, insert the
base ring (20), three packing rings (21), upper packing box ring
(23) and three disk springs (24) in accordance with Figure 4.
9. Insert the wiper ring (13) into the actuator connecting flange
(12). When the actuator connecting flange has the grooves
option, the relevant O-rings (25 inner, 26 outer) are to be
inserted.
10. Slide the actuator connecting flange over the plug shaft and
secure it to the bonnet with screws (17) and washers (18).
11. After the assembly of the shaft seal has been completed,
tighten the bonnet bolts (14, 15, 16) to the required torques
given below in accordance with the nominal valve size.
Valve Size
Required Torques
N.mFt. Lb
1” (25 mm)1814
2” (50 mm)2519
3” (80 mm)3526
7.2 Actuator Reassembly (Figures 5a, 5b & 6)
The assembly and setting of the actuator is made much easier
if the spring barrel (103) is first removed from the actuator yoke
(134). This is accomplished by removing the screws (101 and
102).
1. Insert the shaft bearing (125) and the grommet (129) into the
yoke (134).
2. Turn the plug to its closed position, hold the lever (135) in
position inside the yoke housing and slide the latter along
with the lever over the plug shaft.
NOTE: Carefully place the valve lever (135) on to the
splines so that its free end reaches as near as possible
(this depending on the splines of the plug shaft) to the
housing wall of the yoke (Figure 6 distance approximately
28 mm). The position of the plug (3) should not be allowed
to change during this process.
3. Secure the yoke to the valve body with screws (19) (Figure 1).
7.3 Setting the Actuator (Figures 6, 7, 8)
The actuator setting depends on the required fail-safe position
of the valve (see Step 1).
Since the seat and plug are of soft materials, the lever (135)
must be set so that the valve produces the required tightness.
The handwheel or adjusting tool (Figure 6), can be used as an
aid.
The selected tool is screwed until the plug is brought into the
closed position. The tightness of the seat/plug seal can be
checked using an appropriate method with the handwheel or
adjusting tool being tightened until the required tightness is
obtained.
It is essential that the instructions for setting the actuator be
carefully followed. An incorrect setting will lead to wear of seat
or plug.
A. Valve closed on air failure (Air to open) (Figure 7)
a. Determine the position of the lever at which the
valve reaches the required tightness and measure
the “D” distance from the contact surface of the
spring barrel on the yoke to the beginning of the
hole for the clevis pin in the lever (135).
b. The clevis (100) can now be adjusted so that the
distance from the beginning of the hole for the
clevis pin to the contact surface for the yoke is 1
to 2 mm less than the previously measured “D”
distance.
c. Remove the handwheel or setting tool and secure
the spring barrel with the screws (101) and washers
(102).
Masone ilan 31000 Series C ontrol Valve Ins truction Man ual | 6
B. Valve open on air failure (Air to close) (Figure 8)
a. When the lever has reached the position
corresponding to the required tightness, measure
the “D” distance from the contact surface of the
spring barrel on the yoke to the beginning of the
hole for the clevis pin in the lever (135).
b. Supply air to the actuator so that the actuator
stem moves out fully. Set the clevis (100) so that
the distance from the beginning of the hole for the
clevis pin to the contact surface for the yoke is 1
to 2 mm greater than the previously measured “D”
distance.
c. Remove the handwheel or setting tool and secure
the spring barrel with screws (101) and washers
(102).
2. Move the actuator to an intermediate position, align the lever
and the clevis holes, insert the clevis pin (124) and fit the
clevis pin clips (122).
3. Tighten the locknut (111A).
4. Press the lever (135) against the shaft bearing (125) and
tighten the lever cap screw (137).
5. Secure the indicator (154), screw in the handwheel (141) if
necessary and install the washer (139) and truarc ring (138).
Lock handwheel in neutral position. Install the remaining
covers (118, 121, 130 and 133).
7.4 Eliminating Seat Leakage During Operation
If leakage between seat and plug is found during operation,
it can be eliminated in most cases by adjusting the actuator.
Supply air to put the valve at mid travel, remove the clevis pin
(124) and slide the lever (135) out of the clevis (100).
8. Seat Ring Replacement
To check the seat and plug for wear or to replace the seat ring,
perform the following steps:
1. Bring the plug into its fully open position (if the valve is
closed on air failure, supply air to the actuator to fully open
the plug).
2. Remove the bonnet bolting (14, 15, 16), turn the bonnet
(2) clockwise up to the stop on the body flange, and in this
position, carefully remove it from the body.
The seat ring (4) and plug (3) can now be checked for wear
and the seat ring replaced if necessary. The procedures for
disassembly and reassembly were described in detail in
Sections 6 & 7.
The plug can be replaced only after the complete valve body
S/A has been disassembled. Refer to Section 6.2.
9. Assembly Tools
The operation of fitting the packing and adjusting the actuator
require the use of special tools. In addition these tools reduce
the risk of sealing elements being damaged during assembly.
The tools can be obtained as a complete set from BHGE parts
department and are suitable for all valve sizes (refer to Figure
2).
Fitting tools for the seat rings are available in accordance with
the valve size (refer to Figure 3).
A. If the valve is closed on air failure (Air to open)
After loosening the locknut (111A), screw the clevis (100) in by
one full revolution.
B. If the valve is open on air failure (Air to close)
After loosening the locknut (111A), screw the clevis (100) out
by one full revolution.
After refitting the clevis pin, check the tightness between seat
and plug. If the necessary tightness has not been reached,
repeat Step A or B as required.
If adequate tightness cannot be achieved by adjusting the
actuator, the seat and plug should be checked for wear.
Tightness between seat and body must also be checked.
BHGE res erves the rig ht to make changes in sp ecificati ons and features s hown herein, or d iscontinue the
produc t described at a ny time without n otice or obligat ion. Contact y our BHGE repres entative for th e most
current i nformation. T he BHGE logo is a tr ademark of Baker H ughes, a GE compa ny, LLC. Baker Hugh es, a GE
company an d the GE monogra m are trademark s of the General El ectric Compa ny and Baker Hughe s, a GE
comp any, LLC.
GEA 31746 B 10/2 017
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