Emerson Fisher Baumann 24000 Instruction Manual
Instruction Manual
D103355X012
Baumann™ 24000 Little Scotty™
Bronze Control Valve
24000 Valve
May 2012
Contents
Introduction 1...................................
Scope of Manual 1.............................
Safety Precautions 2...........................
Maintenance 2.................................
Installation 3..................................
Air Piping 3...................................
Disassembly 4................................
Actuator Removal 4........................
Valve Body Disassembly 5...................
Lapping the Valve Seat 5.......................
Replacing Packing 5...........................
Actuator and Valve Body Reassembly 5...........
Parts Ordering 6................................
Dimensions and Weights 11......................
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.
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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.
3. Athree-valvebypassmustbeusedtopermitremovalofthecontrolvalvefromthelinewithoutshuttingdownthe
system.
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
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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.
3. Remove stem locknuts (key 27), travel indicator (key 58), and yoke drive nut (key 9).
4. Remove actuator from valve.
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.
3. Remove stem locknuts (key 27), travel indicator (key 58), and yoke drive nut (key 9).
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