Baumann™ 24000 Little Scotty™
Bronze Control Valve
24000 Valve
May 2012
Contents
Introduction1...................................
Scope of Manual1.............................
Safety Precautions2...........................
Maintenance2.................................
Installation3..................................
Air Piping3...................................
Disassembly4................................
Actuator Removal4........................
Valve Body Disassembly5...................
Lapping the Valve Seat5.......................
Replacing Packing5...........................
Actuator and Valve Body Reassembly5...........
Parts Ordering6................................
Dimensions and Weights11......................
Introduction
Figure 1. 24000 Little Scotty Control Valve with
Baumann 32 Actuator and
FIELDVUE™ DVC2000 Digital Valve Controller
W9753
Baumann Little Scotty industrial control valves (figure 1) are intended for general utility service in pressure, flow, and
temperature control applications.
Industrial grade control valves exhibit low hysteresis and deadband, good control characteristics, tight shutoff, rugged
construction, high performance packing, and easy maintainability. This translates into reduced maintenance costs,
reduced process variability, and increased process availability.
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for the Baumann 24000 bronze
control valve.
Do not install, operate, or maintain Baumann 24000 control valves without being fully trained and qualified in valve,
actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is
important to carefully read, understand, and follow all the contents of this manual, including all safety cautions and
warnings. If you have any questions about these instructions, contact your Emerson Process Management sales office
before proceeding.
www.Fisher.com
24000 Valve
May 2012
Instruction Manual
D103355X012
WARNING
Always wear protective gloves, clothing and eyewear when performing any installation operations to avoid personal
injury.
Personal injury or property damage caused by sudden release of pressure or bursting of pressure retaining parts may result
if service conditions exceed those for which the product was intended. To avoid injury or damage, provide a relief valve for
over pressure protection as required by government or accepted industry codes and good engineering practices.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
CAUTION
This valve is intended for a specific range of pressures, temperatures and other application specifications. Applying
different pressures and temperatures to the valve could result in parts damage, malfunction of the control valve or loss of
control of the process. Do not expose this product to service conditions or variables other than those for which the product
was intended. If you are not sure what these conditions are you should contact your Emerson Process Management sales
office for more complete specifications. Provide the product serial numbers (shown on the nameplate) and all other
pertinent information.
WARNING
If you move or work on an actuator installed on a valve with loading pressure applied, keep your hands and tools away
from the stem travel path to avoid personal injury. Be especially careful when removing the stem connector to release all
loading on the actuator stem whether it be from air pressure on the diaphragm or compression in the actuator springs.
Likewise take similar care when adjusting or removing any optional travel stop. Refer to the relevant actuator Maintenance
Instructions.
If hoisting the valve, take care to prevent people from being injured in case the hoist or rigging slips. Be sure to use
adequate sized hoists and chains or slings to handle the valve.
WARNING
Personal injury could result from packing leakage. Valve packing is tightened before shipment; however, the packing
might require some readjustment to meet specific service conditions.
Maintenance
WARNING
Avoid personal injury and property damage from sudden release of process pressure or bursting of parts. Before
performing any maintenance operations:
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Instruction Manual
D103355X012
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
on both sides of the valve. Drain the process media from both sides of the valve.
D Depending on the actuator construction, it will be necessary to manage the pneumatic actuator spring
pre-compression. It is essential to refer to the relevant actuator instructions in this manual to perform safe removal of
the actuator from the valve.
D Use lock-out procedures to be sure the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
Note
Whenever a gasket seal is disturbed by removing or shifting gasketed parts, install a new gasket during reassembly. This provides a
good gasket seal because the used gasket may not seal properly.
24000 Valve
May 2012
WARNING
Avoid personal injury or property damage by thoroughly cleaning the line of all dirt, welding chips, scale, oil or grease, and
other foreign material. Failure to do so could result in damage to the seating and sealing surfaces of the valve and result in
damage to the valve and release of process materials.
Installation
1. Before installing the valve in the pipeline, thoroughly clean the line of all dirt, welding chips, scale, oil or grease, and
other foreign material.
2. Install the valve so the controlled fluid will flow through the valve body in the direction indicated by the arrow cast
on the valve body.
4. In case of a heat-insulated installation, insulate the valve body only, not the bonnet.
WARNING
To avoid personal injury or property damage, do not attempt to do any work on a valve while the system is in operation.
The valve must be isolated 100% from the active system and the isolated line voided of pressure and/or hazardous fluids.
Air Piping
1. For an air-to-extend actuator (air-to-close action), connect the actuating air pressure line to the 1/4 NPT opening in
the upper diaphragm case. For an air-to-retract actuator (air-to-open action) connect the actuating air pressure line
to the 1/4 NPT to the lower diaphragm case.
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24000 Valve
May 2012
2. Use 6.4 mm (1/4 inch) O.D. tubing or equivalent for all air lines. If air line exceeds 8 m (25 ft) in length, 9.5 mm (3/8
inch) tubing is preferred. Air pressure not to exceed 2.41 barg (35 psig).
Instruction Manual
D103355X012
Disassembly
WARNING
If there is evidence of process fluid under pressure leaking from the joint, retighten the valve body/joint nuts and return to
the Warning at the beginningof the Maintenance section. This Warning provides proper steps to isolate the valve and
relieve process pressure.
CAUTION
When assembling or disassembling the valve, do not turn the valve stem while the plug is in contact with the valve seat.
This can damage the seating surface very quickly.
CAUTION
When adjusting the valve stem do not grip the stem directly with pliers or a wrench. This will damage the surface of the
stem, and cause damage to the packing in the valve. Instead, counter-tighten the two locknuts (key 27) on the stem (key 5)
together. This will allow you to turn the stem by turning the locknuts (key 27) with a wrench.
When placing the valve in a vise, clamp the flat end faces of the valve. Do not try to clamp the rounded sides of the valve.
This will ruin the valve.
Actuator Remov a l
Access to the internal components of the valve body can be accomplished with the actuator removed. For actuator
maintenance see the following instruction manual (Baumann Actuator Instructions, D103352X012).
Air-to-Close Actuators
1. Disconnect air supply to the actuator and remove air tubing.
2. Loosen drive nut (key 9) and then remove plug and stem (keys 4 and 5) assembly by holding actuator stem still
while unthreading plug and stem assembly counterclockwise.
5. Disconnect air supply to actuator and remove air tubing.
Air-to-Open Actuators
1. Using flexible tubing, apply sufficient air pressure to the actuator to lift the plug off the seat.
2. Loosen drive nut (key 9) and then remove plug and stem (keys 4 and 5) assembly by holding actuator stem still
while unthreading plug and stem assembly counterclockwise.
5. Disconnect air supply to actuator and remove air tubing.
24000 Valve
May 2012
Valve Body Disassembly
1. After removing the actuator, unscrew bonnet (key 8), and plug and stem (keys 4 and 5) from valve body (key 1). A
new body gasket (key 49) should be installed each time the valve is disassembled.
2. Loosen packing spring load by removing the packing follower (key 10).
3. Remove the plug and stem assembly by pulling it out through the bottom of the bonnet (key 8) while rotating the
stem (key 5). This will help prevent damage to the packing components.
Note
Handle the parts carefully to avoid damaging the seating and guiding surfaces. Wipe the parts with a clean soft cloth and examine
for signs of wear or damage.
Lapping the Valve Seat
If valve seat leakage becomes excessive, it may be necessary to lap the valve seat.
Lappingistheprocessofmatingthevalveplugtotheseatring,withanabrasivetoproduceaclosefit.Whenvalveseat
leakage becomes excessive, lapping becomes necessary. The plug and seat ring seating surfaces should be free of
largescratchesordentsandthecontactsurfaceoftheseatsshouldbeasnarrowaspossible.
1. Use a good quality lapping compound with a mixture that contains 280 to 600 grit. Apply at several spots around
the plug seating surface. Replace the plug (key 4) in the bonnet (key 8).
2. Screw the bonnet (key 8) loosely into the valve body (key 1) to serve as a guide during the lapping operation.
3. Lap the valve by applying a slight pressure on the stem and rotate the stem in short oscillating strokes
approximately 8 to 10 times or until you see an even and complete lap line. The plug should be intermittently lifted
and turned 90 degrees while lapping to keep the plug and seat ring concentric.
4. Clean the valve seat (key 2) and plug (key 4) thoroughly when the lapping is complete, removing all traces of
lapping compound.
Replacing Packing
Refer to the standard and optional packing constructions (figures 3 and 4) to determine the packing that has been
preinstalled in your valve.
1. Disassemble the valve as directed earlier. Remove the locknuts (key 27) and indicator disk (key 58), and turn the
plug stem (key 5) out through the packing box. Remove the packing box and packing. Push out the old packing by
working from the underside of the bonnet (key 8).
2. ForStandardSpringLoadedPTFEV-RingPacking(figure3):Carefully insert each piece in exact order shown in
figure 3. Tighten the follower (key 10) until it shoulders on the bonnet (key 8). This will compress the packing spring
(key 6) to enable constant stem sealing throughout packing life.
3. For Optional Molded Graphite Ribbon Packing (figure 4): Carefully insert each piece in exact order shown in figure 4.
Hand tighten packing follower
(key 10). Use a wrench to increase tightness by turning the nut an additional 60 degrees.
Actuator and Valve Body Reassembly
Insert a new valve body gasket (key 49) and install bonnet assembly (key 8). Place the actuator yoke over stem (key 5).
While tilting actuator back, drop yoke drive nut (key 9) over stem (key 5). Run lock nuts (key 27), and travel indicator
(key 58) down as far as possible and counter tighten locknuts (key 27) to lock.
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24000 Valve
May 2012
Instruction Manual
D103355X012
Carefully position actuator over stem (key 5), lift plug stem and turn plug stem (key 5) into actuator stem as far as i t
will go before adjusting bench range. See the following instruction manual (Baumann Actuator Instructions,
D103352X012).
CAUTION
When assembling or disassembling the valve, do not turn the valve stem while the plug is in contact with the valve seat.
This can damage the seating surface very quickly.
Figure 2. Baumann 24000 Valve Body Assembly with Stan dard Bonnet and Standard PTFE Spring Loaded Packing
E1259
WARNING
To avoid personal injury or equipment damage due to possible sudden shifting or falling of the valve assembly, do not lift
the valve by the handwheel.
Parts Ordering
When corresponding with your Emerson Process Management sales office about this equipment, always mention the
valve serial number. When ordering replacement parts, also specify the key number, part name, and desired material
using the following parts tables.
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Instruction Manual
D103355X012
24000 Valve
May 2012
WARNING
Use only genuine Fisherr replacementparts.ComponentsthatarenotsuppliedbyEmersonProcessManagementshould
not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the
performance of the valve, and could cause personal injury and property damage.
NOTE: ACTUATOR REMOVAL REQUIRES 115 mm (4.5 INCHES) VERTICAL CLEARANCE.
ADJUSTABLE OPEN/CLOSE DUAL
TRAVEL STOPS
125 (4.9)
284
(11.2)
BAUMANN NV ELECTRIC
ACTUATOR
mm
(inch)
11
24000 Valve
Instruction Manual
May 2012
Table 6. Baumann 24000 Valve Dimensions
VALVE SIZEA VALVE BODYB BONNETE
DNNPSmminchmminchmminch
151/2893.5783.1271.06
203/4893.5783.1271.06
2511094.3833.3331.3
401-1/21375.4993.9461.8
5021686.61044.1582.3
D103355X012
Table 7. Baumann 24000 Valve Assembly Weights
VALVE SIZEWEIGHT
DNNPSkglb
151/21.63.5
203/41.63.5
2512.35.0
401-1/24.910.9
5028.919.7
Table 8. Baumann Actuator Weights
ACTUATOR TYPE
324.510
5411.325
7015.434
(1)
MV1020
(1)
VA1020
NV24-MFT (non spring return)1.53.3
NVF24-MFT or NVF24-MFT-E
1. Electric actuators. Reference bulletins 52.1:ECV, D103347X012 or52.1:NVACT,
D103326X012 for additional information.
return)
(1)
(spring
WEIGHTS
kglb
1022
1430
1.84
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Baumann, Little Scotty, Fisher, and FIELDVUE are marks owned by one of the companies in the Emerson Process Management business unit of Emerson
Electric Co. Emerson ProcessManagement, Emerson,and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are
the property oftheir respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they arenot
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our termsand conditions,which are available upon request. We reserve the right to modifyor improve the designs or specifications of such
products at any time without notice.
Emerson Process Management
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
12
E 2009, 2012 Fisher Controls International L LC. All rights reserved.
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