EMERSON 5910C Anderson Greenwood Pressure Vacuum Relief Valve Instruction Manual

EMERSON 5910C Anderson Greenwood Pressure Vacuum Relief Valve

Before installation, these instructions must be carefully read and understood.

FIGURE 1
MODEL 5910C

WARNING
Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion, fire and/or chemical contamination causing property damage and personal injury or death.

DISCLAIMER OF WARRANTIES

The contract between Anderson Greenwood and our customer states Anderson Greenwood’s entire obligation.
The contents of this instruction manual shall not become part of or modify any prior or existing agreement, commitment or relationship between AndersonGreenwood and our customer. There are no express or implied warranties set out in this instruction manual.
The only warranties that apply are those in the existing contract between Anderson Greenwood and our customer Anderson Greenwood 5910C Pressureand vacuum relief valves with flame arresteassembly have not been tested by AndersonGreenwood under all possible operationalconditions, and Anderson Greenwood does nothave all the data relative to your applicationThe information in this instruction manuais not all-inclusive and does not and cannot take into account all unique situations.
Consequently, you should review this product literature in view of your application. If you have any further questions, please contact AndersonGreenwood for assistance.

LIMITATIONS OF SELLER’S LIABILITY
In the event that a court holds that this instruction manual created some new warranties, Seller’s liability shall be limited to repair or replacement under the standard warranty clause. In no case shall Seller’s liability exceed that stated as limitations of remedy in the contract between the Seller and Buyer. Use of parts that are not manufactured or supplied by Anderson Greenwood voids any Anderson Greenwood warranty and believes Anderson Greenwood of any obligation to service the product under warranty. AndersonGreenwood recommends the use of only Anderson Greenwood manufactured or supplied parts to maintain or service Anderson Greenwood 5910C Series Pressure and Vacuum relief valve with Flame Arrester assembly.

SAFETY PRECAUTIONS

Read and understand this instruction manual before installing, operating or performing maintenance on Anderson Greenwood 5910C
Series Pressure and vacuum relief valve with flame arrester assembly. follow all precautions and warnings noted herein when installing, operating, or performing maintenance on this equipment.

WARNING

• Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion, fire and/or chemical contamination causing property damage and personal injury or death. Anderson Greenwood™ flame arrestor must be installed, operated and maintained in accordance with federal, state and local codes, rules and regulations, and Emerson instructions. Failure to correct trouble could result in a hazardous condition. Call a qualified service person to service the unit. Installation, operation and maintenance procedures performed by unqualified person may result in improper adjustment and unsafe operation. Either condition may result in equipment damage or personal injury. Only a qualified person must install or service the flame arrestor.
• Unit must be isolated from tank pressure before servicing. All gas must be blocked and pressure safely vented.
• Flame Arresters are not capable of stopping a flame front in mixtures of air with hydrogen, acetylene, ethylene oxide, or carbon disulphide.

PRACTICAL LIMITATIONS

While flame arresters decrease the possibility of flame propagation in a system, certain variables must be evaluated to ensure safety.
The relative fire hazard of flammable mixtures can be judged by the upper and lower explosive limits. These limits are expressed as percent by volume of the gas or vapor in air. The explosive range is that span of concentrations lying between the lower and upper limits. The upper limit is the point at which the mixture is too rich to burn, i.e., contains minimal oxygen to support combustion. The broader the explosive range, the easier it is to create an air-gas explosive mixture. Conversely, when an explosive range is narrow, the chance of developing a hazardous air-gas mixture is reduced.

GENERAL
The 5910C is designed to protect low-pressure storage tanks, anaerobic digesters and gas-holders from excessive pressure and/ or vacuum. In addition, it maintains system operating pressure, so gas is not routinely vented to the atmosphere. The flame arrester element assembly protects from accidental ignition of the gas within the low-pressure storage tank, anaerobic digesters, and gas-holders similar to low-pressure storage devices. The arrester is designed to stop the propagation of flame from external sources.
The combination valve and flame arrester is installed vertically on the roof of low-pressure storage tanks, anaerobic digesters and gas-holders. The 5910C Series unit relieves pressure directly to the atmosphere.

A weather hood and mesh screen protects the valve pressure pallet, and guideposts & flame element assembly from contamination, nesting animals, weather, etc. In-breathing ambient air relieves vacuum pressure. Flame arresters may be used in combination with additional protection measures, the overall safety of the combined installation shall be assessed, taking account of any hazardous area classification (zones) and of the likelihood of possible ignition sources.

WARNING
The flame element assembly in this product is validated and certified, per ISO 16852 to protect against flame propagation only for Gas Group IIA.

CONSTRUCTION
Refer to Figure 04 for construction and assembly detail.
Standard materials of construction for the valve include cast body and cover(s). Pallets are dead weight loaded with lead or coated steel weights and include a flexible membrane-sealing insert. The pallet is loosely guided through a center stem and pallet guide posts.

CONSTRUCTION
Refer to Figure 04 for construction and assembly detail.
Standard materials of construction for the valve include cast body and cover(s). Pallets are dead weight loaded with lead or coated steel weights and include a flexible membrane-sealing insert. The pallet is loosely guided through a center stem and pallet guide posts.

The maximum working pressure for the 5910C series unit is 2 psig (13.8 kpa). For material selection see product data sheet.

WARNING
Ensure all selected materials are suitable for the environment and processes for which they are being installed. Attention must be paid to selection of materials to ensure effective operation of the valve and flame arrester functionality

1. Does not include coupling.
Size| A [in]| B [in]| C [in]| D 1 [in]
2″| 17.52| 15.35| 9.88| 12.95
3″| 19.88| 15.35| 12.24| 14.17
4″| 23.15| 21.38| 12.44| 16.93
6″| 26.22| 21.38| 15.55| 19.80
8″| 32.20| 25.28| 19.57| 22.72

OPERATION
When the internal tank pressure approaches the valve setting, the pressure pallet in the valve begins to lift. As the pressure exceeds the valve setting, the pressure pallet lifts off the seat ring. Excess product vapor is allowed to vent to the atmosphere, relieving the over pressure condition. The valve pallet automatically re-seats as the tank pressure drops below the valve setting. If a vacuum within the tank approaches the valve setting,the vacuum pallet in the valve begins to lift. As the vacuum exceeds the valve setting,the vacuum pallet lifts off the seat ring. Atmospheric air is allowed to flow into the tank, relieving the excess vacuum condition. The pallet automatically re-seats as the vacuum drops below the valve setting. Flame element assemblies integrated into the unit do not prevent ignition of flammable mixtures but provide protection from unconfined deflagration from the outside atmosphere to the internal tank space Flame Arresters in the unit do not prevent the ignition of flammable mixtures but prevents the propagation of flame in case of ignition . The Flame Arrester element assembly stops the propagation of flame by absorbing and dissipating heat through the surface area of the crimped foil. Heat is absorbed as ignited gas attempts to pass through the small passages within the element assembly.
This action lowers the temperature of the gas below its ignition point and quenches the flame. Also, 5910C models rated for short-time burning provide protection from deflagration when a stabilized burn condition exists on the unprotected side of the element.

INSTALLATION (PLACING INTO SERVICE)

5910C Series pressure and vacuum relief valves must be mated with the appropriate flange(s).
The valve is installed vertically. The nozzle must be plumb and the inlet flange face level to ensure proper operation of the relief valve. The valve’s vacuum inlet and pressure outlet must remain clear and at a reasonable distance from any obstructions to ensure free and easy access for maintenance and any obstructions which may impair flame protection or flow.

1. Remove the valve from the shipping container. Check to see if extra loading weights were bagged and packed separately.

2. Remove the weatherhood, flame element assembly and/or cover(s) and all packing material above the pallets and within the valve.
   CAUTION
   Whenever the flame element assembly and/or cover(s) is removed and reinstalled, the end of the pallet stem must engage the stem guide in the flame element assembly and/or the stem guide chamber in the cover(s) for proper seating and valve operation

3. To load vacuum pallet weights, perform the following:
   a. With vacuum cover and gasket removed, remove vacuum pallet assembly from body.
   b. Remove grip ring from pallet stem.
   c. Non-variable setting: locate weight marked “VACUUM” and place on top of compensating weight and/or pallet.
   Secure with grip ring. Note: if the setting is less than 2” WC, the weight will be pre-loaded on the pallet.
   d. Variable setting: each lead weight is calibrated from 1” WC increment.
   (Increments of ¼” WC and ½” WC may be supplied on special order). Those weights necessary for the initial specified setting will be tagged separately from any extra weight provided. Remove the packaging on the weights tagged from the initial specified setting and place the weights on top of the compensating weight. Secure with grip ring. Store remaining weights for future use (in case the setting needs to be increased).
   e. Weigh the entire pallet assembly (including installed weights). Using Table 5, confirm that the assembly is the proper weight to achieve the required setting. Allowable weight tolerance is +5%,-5%.
   f. Remove any remaining packing material from the valve body. Wipe vacuum seat ring, guide posts and pallet assembly with a soft cloth to remove any material which could affect valve operation.
   g. Place pallet assembly on valve body seat.
   Ensure that pallet moves freely within guide posts and rests flat on the seat ring. h. Replace the cover gasket and cover. Tighten cover screws uniformly.
   CAUTION
   The end of the pallet stem must engage the stem guide chamber in the cover for proper seating and valve operation.

4. To load pressure pallet weights, perform the following:
   a. With weather hood and flame element assembly removed, remove pressure pallet assembly from body.
   b. Remove grip ring from pallet stem.
   c. Non-variable setting: locate weight marked “PRESSURE” and place on top of compensating weight and/or pallet.
   Secure with grip ring. If setting is less than 2” WC, weight will be pre- loaded on the pallet.
   d. Variable setting: each lead weight is calibrated from 1” WC increment.
   (Increments of ¼” WC and 1/2” WC may be supplied on special order). Those weights necessary for the initial specified setting will be tagged separately from any extra weight provided. Remove the packaging on the weights tagged from the initialspecified setting and place the weights on top of the compensating weight. Secure with grip ring. Store remaining weights for future use (in case the setting needs to be increased).
   e. Weigh entire pallet assembly (including installed weights). Using Table 5, confirm that the assembly is the proper weight to achieve the required setting. Allowable weight tolerance is +5%,-5%.
   f. Remove any remaining packing material from valve body. Wipe pressure seat ring, guide posts and pallet assembly with a soft cloth to remove any material which could affect valve operation.
   g. Place pallet assembly on seat. Ensure that pallet moves freely within guide posts and rests flat on the seat ring.
   h. Replace the weather hood and flame element assembly.
   CAUTION
   The end of the pallet stem must engage the stem guide in the flame element assembly or the stem guide chamber in the cover for proper seating and valve operation.

5. Place the valve in a level position. Reach up through the inlet flange and carefully push up on the pressure pallet, then lower it onto the seat. Pallet should move up and down freely and rest flat on the seat ring.

6. Remove all vacuum element screws from the body except for the furthest outboard.
   Loosen the outboard screw only enough to allow the vacuum flame element assembly and gasket to rotate away from the valve vacuum bore. (Figure 02)

7. Reach up through the vacuum bore and carefully push up on the vacuum pallet, then lower it onto the seat. Pallet should move up and down freely.

8. Rotate the element assembly and gasket back into place and re-install all screws.

9. Mount the valve on the flanged nozzle using the appropriate gasket.
   CAUTION
   DO NOT MATE A FLAT FACE FLANGE TO A RAISED FACE FLANGE. If it necessary to mate an ANSI Class 125 F.F.
   Flange with an ANSI Class 150 R.F. Flange, use the proper spacer to convert the raised face to a flat face.

10. Verify that the valve is level to permit proper operation of the pallets. Install mounting hardware and tighten uniformly.

11. Use a full faced gasket and tighten all mounting hardware uniformly.

12. Metal parts insulated by gaskets should be earthed where necessary.
    NOTE
    Although steel valves have a standard paint system, it is recommended that steel valves be inspected and touch-up applied if necessary. Apply paint to external surfaces only.

MAINTENANCE (ASSEMBLING AND DISMANTLING)

The valve should be inspected and cleaned at periodic intervals. The first inspection should be made approximately 30 days after commissioning. Subsequent inspections should be made every 30 days. The user may adjust the schedule for his own convenience and safety, depending upon the product being stored.

WARNING

• Relief valve must be isolated from tank pressure before servicing. All gas must be blocked and pressure safely vented. If no isolation valve is present, carefully open vacuum cover or lift pressure pallet, allowing pressure to vent slowly.
• Wear appropriate gloves and/or breathing apparatus if hazardous vapors are present.

1. To inspect valve proceed as follows:
   a. Remove the weatherhood and flame element assembly and/or cover.
   b. Remove pallets one at a time. Identify the pallets to ensure they are returned to the correct valve seat.
   c. Inspect pallet inserts for ripples, tears,or nicks, as well as seating surfaces for debris, abrasion or pitting. Pallet edges and guide posts should be free or burrs, corrosion or other obvious damage.
   Clean all components, replacing any showing excess wear or damage.
   d. Reassemble in reverse order.
   CAUTION
   The end of the pallet stem must engage the stem guide chamber in the flame element assembly and/or cover for proper seating and valve operation.
   CAUTION
   During periods of freezing weather, extra maintenance is required for 5910C Series. Either remove the pallets or apply generous portions of silicone grease to the pallets, seat rings and guide posts. When using silicone grease, inspect valves at least weekly. Extra attention must be given to inspection of the Flame Cell Assembly to ensure clear and consistent flow.

2. To replace pallet insert proceed as follows:
   a. Remove weather hood and/or cover(s) and flame element assemblies and then pallet assembly.
   b. Remove nut from base of pallet stem.
   Remove retainer plate and insert.
   Clean all surfaces and threads. Install new insert, handling carefully to avoid damaging insert or pallet.
   c. Reassemble pallet and place on seat of valve body. Ensure pallet assembly moves freely within guide posts and rests flat on seat ring.
   d. Reinstall flame element assembly, weather hood and/or cover(s).
   CAUTION
   The end of the pallet stem must engage the stem guide chamber in the flame element assembly for proper seating and valve operation.

3. To replace the pressure seat ring perform the following:
   a Remove weather hood, screen, flame element assembly, spacer ring (if applicable), pallet assembly, guide posts, shroud assembly, and seat gasket.
   b. Remove seat ring and O-Ring from the valve body. Clean body, outlet adapter mating surfaces and O-Ring Groove.
   c. Install new O-Ring into the groove; ensure that the O-Ring stays properly in groove while installing seat ring.
   d. Install new seat ring carefully to avoid distortion. Reassemble seat gasket, shroud assembly, guide posts and spacer ring (if applicable) to secure seat. Ensure that seat is flush and level with valve body.
   e. Place pallet assembly on valve body seat.
   Ensure pallet assembly moves freely within guide posts and rests flat on seat ring.
   f. Reassemble remaining parts in reverse order.
   CAUTION
   The end of the pallet stem must engage the stem guide chamber in the flame element assembly for proper seating and valve operation.

4. To replace vacuum seat ring perform the following:
   a. To replace vacuum side seat, it is only necessary to remove the vacuum-side element assembly & seat gasket. The seat will drop right out. No need to remove guide posts on vacuum side.
   b. Remove flame element assembly, seat gasket, seat ring and O-Ring from valve body. Clean body mating surface and O-Ring groove.
   c. Install new O-Ring into groove; ensure that the O-Ring stays properly in groove while installing seat ring.
   d. Install new seat ring carefully to avoid distortion. Reassemble flame element assembly and seat gasket to secure seat ring. Ensure that seat is flush and level with valve body.
   e. Place pallet assembly on valve body seat.
   Ensure pallet assembly moves freely within guide posts and rests flat on seat ring.
   f. Reassemble cover and gasket.
   g. Remove all vacuum element screws from the body except for the furthest outboard.
   Loosen the outboard screw only enough to allow the vacuum flame element assembly and gasket to rotate away from the valve vacuum bore. (Figure 02)
   h. Reach up through the vacuum bore and carefully push up on the vacuum pallet, then lower it onto the seat. Pallet should move up and down freely.
   i. Rotate the element assembly and gasket back into place and re-install all screws.
   CAUTION
   The end of the pallet stem must engage the stem guide chamber in the cover for proper seating and valve operation.

5. Seat ring repair:
   a. Seat may be ground or ground and lapped (in place) to improve seal. Use a lapping plate and medium valve grinding compound, applying light pressure.
   b. Finish lapping with a fine compound. Avoid scoring or removing excessive amounts of material.
   c. Clean all compound from valve parts.
   d. Hand buff seat with a medium grade `Scotch-Brite’ (#7447) pad and light oil.
   CAUTION
   Whenever the flame element assembly and/or cover(s) is removed and reinstalled, the end of the pallet stem must engage the stem guide chamber in the flame element assembly and/or the stem guide chamber in the cover(s) for proper seating and valve operation

Flame Element Assembly – Cleaning & Maintenance

1. Carefully remove the element assembly from the arrestor and place it on a soft surface such as plywood.

2. Inspect the flame cell visually for any signs of corrosion or other damage.

3. Inspect the flame cell with a calibrated pin gauge to ensure maximum crimp size openings do not exceed the following values for their respective gas group:

   • Explosion Group IIA / D – 0.024 in. / 0.8 mm (Pressure Side Element)
   • Explosion Group IIA / D – 0.043 in. / 1.14 mm  (Vacuum Side Element)

4. If any damage is noted, or crimp openings exceed maximum size allowable, replace the element assembly

5. Keep the element openings clean to prevent loss of efficiency in absorbing heat.
   Remove the element assembly and clean the elements to prevent the openings from becoming clogged with particulate matter.
   Clean the element with a suitable cleaning media (solvent, soap, water, steam or ultrasonic) then blow dry using compressed air. Be careful not to damage or dent the cell openings as this would hamper the effectiveness of the unit. Do not clean the arrestor elements by rodding to remove blockages, as this practice will damage the elements and seriously impair the arrestor’s performance. If the arrestor element cannot be cleaned satisfactorily, replace it.

6. High-pressure water jets are NOT recommended

7. The cleaning interval should be governed by the amount and type of particulate in the system to which it is installed and must be determined by the user. To determine the maintenance interval, the user should check the element in the first few months of operation to find how quickly particulate accumulates in the cells.

8. After cleaning, thoroughly inspect the element for damage. If damaged, replace it.
   NOTE
   Under no circumstance should the element bank be disassembled from its shell for cleaning or replacement. The element section must be replaced as a complete assembly.
   CAUTION
   If deflagration or stabilised burning is found to have occured, the flame element assembly should be replaced.

FIGURE 4
CONSTRUCTION AND ASSEMBLY DETAIL

PARTS LIST

Item No.     Description

SPECIAL CONDITIONS FOR SAFE USE

Marking on Pressure/Vacuum Relief Valve with integrated Flame Arrester (ATEX Approved)
For IIA only the manufacturing is intended for sizes 2″ (DN 50) to 8″ (DN 200) for Types 5910C

WARNING

FLAME ARRESTERS HAVE INSTALLATION AND APPLICATION LIMITS TYPE DESIGNATION IN ACCORDANCE WITH ISO 16852
DEF| LU/D = N/A| BC: c
| Ex. Gp IIA| T0 = 60°C|

Warning label for 5910C without short time burn protection

WARNING

FLAME ARRESTERS HAVE INSTALLATION AND APPLICATION LIMITS TYPE DESIGNATION IN ACCORDANCE WITH ISO 16852
DEF| LU/D = N/A| BC: b; tBT = 1 min
| Ex. Gp IIA| T0 = 60°C|

Warning label for 5910C with short time burn protection

WARNING PLATE INFORMATION EXPLAINED

“c” – no burn time

Ex. Gp| “IIA” – Suitable for MESG ≥ 0.94 mm
T0| “60°C” – Maximum Operational Temperature

For short time burning flame arresters, additional external safety equipment is required, such as a temperature sensor. Additional safety equipment is required to ensure appropriate corrective measures are taken within 0.5 x tBT to protect the system if an abnormal temperature is detected. Never disconnect or remove these devices in active process system.

All 5910C deflagration elements are rated for short time burning, tBT not to exceed oneminute in accordance with EN ISO 16852:2016.These burn times were determined atatmospheric pressure. If there are operating conditions which can lead to a stabilizedburning event, additional safety measures are required. The devices shall be equipped with temperature sensors in the hood such thatthe atmospheric side of the flame cell can bemonitored. These temperature sensors areinstalled into the system in such a way that they trigger the initiation of measures for the elimination of the stabilized burning (for example, emergency functions like switchingoff the system, inerting or similar). These  measures must occur within half of the timefor which the flame arrester is short-time burn proof (0.5 x tBT). See Figure 03 for warning label showing burn rating, tBT. This requires that measures must be able to be taken within 30 seconds.

Threaded instrumentation ports, with standard
1/2 NPT threads, are integrated into each hood.
Other instrumentation port thread sizes can be
requested.
If the user requests the addition of temperature sensors by Emerson, they will either be installed and shipped threaded into the appropriate instrumentation port in theflame arrester hood or shipped separately with the flame arrester. To install thetemperature sensors that have been shippedseparately, simply remove any protectivepackaging from the temperature sensorsand thread the temperature sensors into the appropriate threaded instrumentation ports in the flame arrester hood making sure to follow temperature sensor manufacturer’s instructions, particularly for wiring.
The temperature sensor shall be installed on the downstream or unprotected (“hot”) side of the flame arrester. For end-of-line deflagration flame arresters, this is the atmospheric side of the flame arrester and the only location available. If the temperature sensor is shipped separately, the user shall be responsible for installing the temperature sensor in the appropriate instrumentation port in the hood of the flame arrester.

If a temperature sensor is not requested with the flame arrester then the end user shall be responsible for installation of the temperature sensor on the unprotected (“hot”) side of flame arrester. This is the side of the flame arrester closest to the source of ignition and is the atmospheric side for end of line deflagration flame arresters. A temperature rise of 20 K (36°F / 20°C) above the flame arrester maximum operating temperature or 20 K (36°F / 20°C) above the process operating temperature, whichever is lower but not to exceed 20 K (36°F / 20°C) above the flame arrester operating temperature, is the recommended activation temperature for initiation of measures against stabilized burning

TABLE 5. TEMPERATURE SENSOR SAFETY SPECIFICATIONS

Note that a rise in temperature measured by the temperature sensor can indicate to the user deflagration and/or detonation events have occurred as well. This should be used as a trigger to investigate what conditions have lead to ignition of flammable vapors, to inspect the flame arrester for damage, and to initiate appropriate corrective actions relative to process system and safety.
Temperature sensors installed by the user shall follow the specifications in Table 5.
Different temperature sensors may be installed by the end user; however these must comply with the safety specifications in Table 5. Theuse of alternate temperature sensors must include evidence of equivalent response rates to the specified sensors in Table 5, particularly as the 5910C end of line deflagration flame arrester is rated for short time burning. If tBT is exceeded during a short-time burning situation, the flame arrester safety cannot be assured.
If an elevated temperature has been detected by the temperature sensor, whether due to flash back or stabilized burn, the temperature sensor shall be inspected for damage and replaced as necessary. If the recorded temperature exceeds the design temperature of the temperature sensor then the measuring probe shall be replaced.

D104601X012 © 2022 Emerson Electric Co. All rights reserved 02/22. Anderson Greenwood is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not 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 terms and conditions, which are available upon request. We reserve the right to modify or improve th designs or specifications of such products at any time without notice.
Emerson Electric Co. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson Electric Co. product remains solely with the purchaser.

9
ANDERSON GREENWOOD 5910C PRESSURE/VACUUM RELIEF VALVE WITH INTEGRATED
FLAME ARRESTER (ATEX APPROVED)
D104601X012 © 2022 Emerson Electric Co. All rights reserved 02/22. Anderson Greenwood is a mark owned by one of the companies in the Emerson
Automation Solutions business unit of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other
marks are the property of their prospective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy,
they are not 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 terms and conditions, which are available upon request. We reserve the right to modify or improve the
designs or specifications of such products at any time without notice.
Emerson Electric Co. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use
and maintenance of any Emerson Electric Co. product remains solely with the purchaser.
Emerson.com

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