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    MODEL MP 13

    Pneumatic Piston Actuator

    Operation and Maintenance Manual

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    All the information contained in this manual is the exclusive propertyof Cooper Cameron Corporation, Cameron Willis Division. Anyreproduction or use of any of the calculations, drawings, photographs,procedures or instructions, either expressed or implied, is forbiddenwithout written permission of Cooper Cameron Corporation, CameronWillis Division, or its authorized agent.

    Initial Release A1August 1998

    Revision 01July 2003

    Copyright 2003 all rights reservedby

    Cooper Cameron CorporationCameron Willis Division

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    Preface

    The information contained in this book was prepared in accordance with AmericanPetroleum Institute Specification 6A, Specification for Wellhead and Christmas TreeEquipment, Section 10.20.7.2.1, Minimum Contents of Manufacturers OperatingManual.

    The procedures included in this book are to be performed in conjunction with therequirements and recommendation outlined in API Specification 6A. Any majorrepairs to the equipment covered by this book should be done by an authorizedCameron Willis service representative. Cameron Willis will not be responsible forloss or expense resulting from any failure of equipment or any damage to anyproperty or injury or death to any person resulting in whole or in part from repairsdone by other than authorized Cameron Willis personnel. Such unauthorizedrepairs shall also serve to terminate any contractual or other warranty, if any, onthe equipment and may also result in the equipment no longer meeting APIrequirements.

    File copies of this manual are maintained. Cameron Willis will make revisionsand/or additions as deemed necessary.

    The drawings in this book are not drawn to scale, but the dimensions are accurate.

    Cameron Willis11331 Tanner RoadHouston, Texas 77041713-280-3000

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    Table of Contents

    I. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    II. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    III. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

    IV. Actuator Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

    V. Actuator Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . 8

    VI. Operating Pressure Calculations . . . . . . . . . . . . . . . . . . . . . 8

    VII. Actuator Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

    VIII. Actuator Assembly Procedure . . . . . . . . . . . . . . . . . . . . . . 11

    IX. Actuator to Bonnet Installation . . . . . . . . . . . . . . . . . . . . . 18

    X. Service and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

    A. Top Shaft Seal Replacement . . . . . . . . . . . . . . . . . . . . . . 23B. Top Shaft Replacement . . . . . . . . . . . . . . . . . . . . . . . . 24

    C. Replacement of Top Cap O-Ring Seal . . . . . . . . . . . . . . . . . 26D. Replacement of Piston & Retainer Nut O-Rings. . . . . . . . . . . . 27

    XI. Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

    XII. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

    Technical Specifications, Illustrations, and Parts List . . . . . . . . . . . . . . 32Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 34

    Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Clearance Removal Dimensions. . . . . . . . . . . . . . . . . . . . . . 36

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    I. Operation

    The pneumatic piston actuator is operated by application of adequate air orgas pressure to the port on the actuator head. Pneumatic pressure on theinternal piston will, in turn, force the bonnet stem to either open or close thevalve, depending upon whether the valve is direct acting or reverse acting.The proper amount of air supply needed per operation is found in theOperating Pressure Calculations chart included in this manual.

    In a normally closed valve having a pressure differential across the gate, theinitial opening or cracking action may be quite rapid as the pressuredifferential is reduced. This is normal and neither causes damage nor hindersvalve function. The remainder of the stroke can be expected to be normal.

    Upon release of actuator pressure, the closing motion should be smooth andwithout hesitation, until the valve comes to the end of its travel. This closingaction should be smooth, whether or not the actuator is operating apressured or un-pressured valve, regardless of orientation. This pneumaticactuator incorporates a compression spring for assistance in closing. If themotion is not as described, refer to the Troubleshooting section of thismanual.

    II. InstallationAn API 6A-Surface Safety Valve (SSV) should be the second valve in thewellhead flow-stream. If two master valves are used, the SSV should be thetop master valve, or if a single master valve is used, the SSV should be thewing valve. Other installations are flowlines, header valves, gathering lines,and pipelines. Surface Safety Valves are designed to provide automatic valveshut-in protection where needed. These SSV applications are ideal for oil andgas installations where corrosive (H2S or CO2), abrasive and/or paraffin ladenproducts are produced.

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    III. Ordering Information

    The following information should be provided with any request for quote ororder placement for Cameron Willis Actuators:

    ActuatorModel of ActuatorSeries of ActuatorSize of ActuatorAPI 6A Requirements (PSL)SSV Class of Service (PR1 or PR2)Control Fluid PowerWell Fluid PowerTemperature (API 6A)Location Environment (Onshore/Offshore)Material Class (API 6A)Actuator Control Pressure AvailabilitySpecial Test RequirementsSpecial Material RequirementsSpecial Coating RequirementsOther Specifications and/or CertificationsAccessories

    IV. Actuator Selection

    To determine the selection of an actuator, refer to the Operating PressureCalculations chart included in this manual. This chart indicates the correctamount of control supply pressure to successfully operate the actuator againstwell flowing pressure conditions.

    It is important to note that higher control supply pressure makes possible theuse of smaller size actuators.

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    V. Actuator Selection Procedure

    Determine valve specifications such as size, maximum rated working pressure,expected shut-in pressure, and maximum flowline pressure. If maximumflowline pressure is less than half of the maximum working pressure of thevalve, consult Cameron Willis for optimum sizing of the actuator.

    Determine the available control pressure supply at the wellsite. This istypically air supply pressure or natural gas supply. This supply can be rated upto 250 PSI for Cameron Willis piston actuators.

    VI. Operating Pressure Calculations

    Valve Size Working Pressure Formulas

    1-13/16 10,000 (.015 x WP + 6 psi)

    2-1/16

    2000/3000 (.015 x WP + 6 psi)

    5000 (.015 x WP + 5 psi)

    10,000 (.015 x WP + 6 psi)

    2-9/162000/3000 (.018 x WP + 6 psi)

    5000 (.018 x WP + 5 psi)

    3-1/182000/3000 (.025 x WP + 6 psi)

    5000 (.025 x WP + 5 psi)

    4-1/16 2000/3000 (.040 x WP + 6 psi)

    Note:Formulas above are based on Cameron FL & FLS valves.

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    VII. Actuator Accessories

    A. Non-Electric Accessories

    Clear Stem Protector This device protects the top shaft of the actuator

    from the adverse effects of weather.

    Manual Hold Open Device

    This device is used to mechanically hold open theactuator and valve. It is typically used on smallervalves or low pressure valves while the valvebody is pressurized. This device is used onwellhead trees during installation, and may also

    be used to stroke small or low pressure valveswhile the valve body is pressurized.

    Hydraulic Override This device is used to open the valve and

    actuator independent of the supply circuit.

    Fusible Hold Open Device

    This device mechanically holds the actuator andvalve open during workover or when the safetysystems are inoperative. The device locks theactuator in the down (full open) position,allowing it to close only in the event of fire.

    Fusible Manual Hold OpenDevice

    This device is used to mechanically hold open thevalve in lieu of the actuator. It locks the actuatorin the down (full open) position, allowing it toclose only in the event of fire. This device is usedon wellhead trees during installation, and mayalso be used to stroke small or low pressurevalves while the valve body is pressurized.

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    B. Electric Accessories

    Electric Limit Switch

    An electrical contact permits a remote indicationof gate valve position (full open or full closed).The electric limit switch is typically used on largeproduction platforms or automated leases wherethere is remote monitoring and control of valves.

    Continuous PositionIndicator

    Continuous position indicators operate at lowcurrents. The frequency of their output can beused to provide exact position. Lineardisplacement transducers are used throughoutthe range between the open and closed position,

    to measure the change in frequency.

    Proximity Sensor

    Proximity sensors sense the linear motion of thevalve by detecting the presence of ferrous andnon-ferrous metals. They are able to functionwithout the need for physical contact.

    Proximity SwitchThis magnetically operated switch senses linearmotion of the valve, and may function eitherwith or without the need for physical contact.

    Pneumatic Limit SwitchThe pneumatic limit switch permits a remoteindication of gate valve position when electricalsupply is not present.

    Magnetic Reed Switch

    The magnetic reed switch device is activated by amagnetic field. It monitors linear travel of thegate valve. The switches are totally sealedagainst harsh environments.

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    VIII. Actuator Assembly Procedure

    A. Preparation For Assembly

    1. Use an assembly work area with a metallic surface covered with a layer ofcorrugated cardboard or soft rubber. Ensure that the work area is clean.

    2. All grease or lubricants used in assembly should be clean. Clean all utensilssuch as brushes or applicators of any foreign particles after each use. Donot leave residue in grease or lubrication containers.

    3. Ensure that all tools used in assembly are clean and in good working order.

    4. Clean all metallic components prior to assembly.

    5. Keep all elastomers and plastic base materials in bags or boxes until neededfor assembly.

    Caution:Never use chlorinated solvents to clean O-rings or other seals.

    6. Inspect all components for burrs, dings, marks, scrapes, nicks, cuts, orabrasions.

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    A. Assembly of Top Cap/Piston/Retainer Nut Sub-Assembly

    1. Place the top cap on a flat surface with the top threaded boss up. Apply

    grease to the through bore and seal bore of the threaded boss.

    2. Install seal into top cap.

    Caution:The lips of the seal must be facing toward the bottom of theactuator.

    3. Install the wiper ring into the seal retainer bore.

    Caution:The wiper ring lip must point away from the actuator and seal, toward the

    grooved end of the seal retainer.

    4. Install the seal retainer into the bore of the threaded boss, on top of theseal. Push down firmly.

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    5. Install the retainer ring into the groove to hold the seal retainer in place.Verify that the retainer ring is fully seated. Grease the seal and sealretainer with grease.

    6. Install the large piston O-ring inthe top cap OD O-ring groove,grease it lightly and set the top capsubassembly aside.

    7. Apply grease to all three retainernut O-ring seal grooves. Lightlygrease two O-rings and install into

    the I.D. grooves of the retainernut. Lightly grease an O-ring andinstall it into the face groove ofretainer nut. Set the retainer nutaside.

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    8. Place the piston on a flatsurface with the lifting eyeholes facing upward. Apply ananti-seize compound to thethreaded bore of the piston.Install the pre-assembledretainer nut into the threadedbore of the piston by aligningthe threads and rotating it in aclockwise manner. Tighten theretainer nut securely.

    9. Lightly grease and install the piston O-ring into the upper groove.

    Caution:Care should be used during assembly to protect the O-rings and top shaftfrom damage. Firmly push the top shaft inside the piston, allowing the topshaft to shoulder on the retainer nut. Set the sub-assembly aside.

    10. Generously grease the top shaft and insert it slowly from the bottom sideof the piston through the retainer nut.

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    3. Insert the lock ring into the groove behind the snap ring, and secure it withthe 3/8hex-head bolts. Install vent fittings in lower housing.

    4. The lower assembly is now complete. Place the assembly right side up.

    D. Assembly of the Piston to the Housing

    1. Wipe the inside of the housing to insure that thesealing area is clean. Generously apply grease tothe entire bore of the housing.

    2. Lift the piston sub-assembly down into thehousing, carefully centering the piston andlowering it slowly. A lifting eye (5/8" -11 UNC) maybe used in the top shaft to help lift the pistonassembly.

    3. Keep the piston as level as possible and press itfirmly to install it into the housing. A dead-blowhammer may be used softly to drive the pistondown into the housing bore.

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    3. Insert the lock ring into the groove behind the snap ring, and secure it withthe 3/8" hex-head bolts.

    4. Thread a lifting eye (5/8-11 UNC) into the top shaft and pull the top shaftthrough the top cap. The actuator is now completely assembled and readyto be mounted onto bonnet. (See Actuator to Bonnet Installationbelow.)

    IX. Actuator to Bonnet Installation

    A. Preparation For Assembly

    Note:Drift the valve before installing the actuator to the bonnet and valve.

    Inspect the bonnet threads and bonnet stem threads for dings, nicks, burrs ordebris. Clean and apply an anti-seize compound generously to all threads.

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    B. Installation of Lower Ring and Lower Spring Retainer

    1. Lift the lower ring over the bonnet stem and down on the bonnet. Align

    the ring threads with the bonnet, then rotate the lower ring in a clockwisedirection until it bottoms out on the bonnet.

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    C. Installation of Spring and Upper Spring Retainer

    1. Generously grease both ends of the spring. Place the spring on the lower

    ring, centering the spring with the bonnet stem.

    2. Grease the bottom and inside surfaces of the upper spring retainer andplace the upper spring retainer on top of the spring. The upper springretainer should fit comfortably on the spring.

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    D. Installation of Downstop

    Apply an anti-seize compound to the downstop threads. Insert the downstop

    through the upper spring retainer. Aligning threads, rotate the downstop in aclockwise direction. This will begin the spring compression process. Use anadjustable wrench on the downstop wrench flats to compress the spring. Thedownstop will bottom out on the bonnet stem. This will fully load the springand will apply a backseat spring force to the bonnet and bonnet stem.

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    X. Service and Repair

    A. Top Shaft Seal Replacement

    1. Disassembly

    a) Bleed off all pressure to the actuator.

    b) Using a small flat screwdriver, remove the retaining ring and pry theseal retainer up and off the top shaft.

    c) Remove the wiper ring from the seal retainer ID, clean it thoroughly,and set it aside. Replace if damaged.

    d) Carefully remove the seal from the top plug of the actuator top cap andoff the top shaft.

    2. Reassembly

    a) Remove dirt and grease from the top shaft and the top cap sealingbore. Inspect both the top shaft and the sealing bore for nicks, dings,excessive wear or damage; replace them if necessary. Lightly grease thetop shaft and sealing bore.

    b) Install a new seal over the top shaft and down into the sealing bore ofthe top cap.

    Caution:Make sure the seal lips are facing down toward the bottom of the actuator.

    c) If required, Install a new wiper ring into the groove in the seal retainer.

    Caution:Make sure the lip of the wiper ring is pointing away from the actuator andseal, and toward the grooved end of the seal retainer.

    d) Grease the assembled seal retainer, place it over the top shaft, and pushit down the top shaft into the sealing bore of the top cap until it hasbeen recessed below the retainer ring groove.

    e) Install the retainer ring into the groove in the top cap sealing bore.

    Caution:Make sure the retainer ring is seated completely into the groove.

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    f) Apply pneumatic supply pressure, stroking the actuator several times toverify that the top shaft, seal, and top cap seal are installed properly.

    B. Top Shaft Replacement

    1. Disassembly

    a) Bleed off all supply pressure to the actuator and remove the supply line.

    b) Inspect and clean the top shaft thoroughly.

    c) Remove the hex head bolts used to retain the lock ring, then use a smallflat screwdriver to pry the lock ring out from behind the snap ring.Remove it and set it aside.

    d) Use a screwdriver to dislodge the snap ring from its groove in thehousing. Remove it and set it aside.

    e) Lift the actuator top cap and piston sub-assembly from the actuator andplace it on a flat surface. A lifting eye (5/8" - UNC) may be threaded intothe top shaft and used to lift the assembly.

    f) Lift the top cap from the top shaft and piston sub-assembly. Inspect allcomponents thoroughly and replace any damaged or excessively worn

    parts. Clean the seal, seal retainer, and O-ring areas, grease them, andset the top cap aside.

    g) Remove the top shaft by turning the top shaft-piston sub-assembly onits side and pushing the top shaft through the retainer nut and piston.Inspect the top shaft and the piston sub-assembly thoroughly; replaceany damaged or excessively worn parts.

    2. Reassembly

    a) Clean the piston, retainer nut and O-ring areas; grease them and set

    them aside.

    b) Inspect the actuator housing; replace it if it is damaged. Clean thehousing thoroughly and apply grease to the entire housing I.D.

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    c) Generously grease the top shaft and insert it slowly from the bottom ofthe piston through the retainer nut. Firmly push the top shaft inside thepiston, allowing the top shaft to shoulder on the retainer nut.

    Caution:Care should be used during assembly to protect the O-rings and top shaftfrom damage.

    d) Lift the piston sub-assembly, carefully center it, then lower it slowlydown into the housing. A lifting eye (5/8" - UNC) may be threaded intothe top shaft and used to lift and lower the piston assembly intohousing.

    The top shaft counterbore should slip over and down onto the nub ofthe downstop. Keep the piston as level as possible and press firmly to

    install it into housing. A dead-blow hammer may be used (softly) todrive the piston into the housing bore.

    e) Again, generously grease the top shaft. Lift the top cap sub-assemblyand center it over the top shaft, then lower it slowly to allow the topshaft to slide smoothly through the seal. A slow and smooth movementwill help protect the seal from damage.

    Caution:The top cap must shoulder on the housing. A slight tap from a dead-blowhammer may be needed to achieve proper shouldering.

    f) Insert the snap ring into the groove in the housing.

    Caution:Make sure the snap ring overlaps properly in the groove.

    g) Lightly grease the lock ring and insert it into the groove behind thesnap ring. Secure it with hex head bolts.

    h) Re-attach the pneumatic supply lines, then stroke the actuator severaltimes to verify that all seals are functioning properly.

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    C. Replacement of Top Cap O-Ring Seal

    1. Disassembly

    a) Bleed off all supply pressure to the actuator and remove the pneumaticsupply lines.

    b) Inspect and clean the top shaft thoroughly.

    c) Remove the hex head bolts used to retain the lock ring, then use a smallflat screwdriver to pry the lock ring out from behind the snap ring.Remove it and set it aside.

    d) Use a screwdriver to dislodge the snap ring from its groove in the

    housing. Remove it and set it aside.

    e) Lift the top cap from the actuator and place it on a flat surface with thethread boss end down. A lifting eye (5/8" - UNC) may be used to lift thetop cap.

    f) Remove the old O-ring and thoroughly clean the O-ring groove. Applysilicone grease to the O-ring groove and to the new O-ring, then installthe new O-ring.

    2. Reassembly

    a) Visually inspect all components and replace any damaged or excessivelyworn parts. Clean the seal, wear ring, and seal retainer areas. Clean theO-ring sealing bore in the housing. Apply grease to all of the O-ringsealing bore in the housing.

    b) Apply grease to the top cap through bore, then generously grease thetop shaft.

    c) Lift the top cap sub-assembly over the top shaft, center it, then lower itslowly, allowing the top shaft to slide smoothly through the Polypakseal. A slow and smooth movement will help protect the seal fromdamage.

    Keep the top cap as level as possible and press it firmly to install intohousing.

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    Caution:The top cap must shoulder on the housing. A dead-blow hammer may beused (softly) to drive the top cap sub-assembly down into housing bore.

    d) Insert the snap ring into the groove in the housing.

    Caution:Make sure the snap ring overlaps properly in the groove.

    e) Lightly grease the lock ring and insert it into the groove behind thesnap ring. Secure it with hex head bolts.

    f) Re-attach the pneumatic supply lines, then stroke the actuator severaltimes to verify that all seals are functioning properly.

    D. Replacement of Piston and Retainer Nut O-Rings

    1. Disassembly

    a) Bleed off all supply pressure to the actuator and remove the pneumaticsupply lines.

    b) Inspect and clean the top shaft thoroughly.

    c) Remove the hex head bolts used to retain the lock ring, then use a smallflat screwdriver to pry the lock ring out from behind the snap ring.

    Remove it and set it aside.

    d) Use a screwdriver to dislodge the snap ring from its groove in thehousing. Remove it and set it aside.

    e) Lift the top cap and piston sub-assembly from the actuator and place iton a flat surface. A lifting eye (5/8" - UNC) may be threaded into thetop shaft and used to lift the assembly.

    f) Lift the top cap from the top shaft and piston sub-assembly. Inspect allcomponents thoroughly and replace any damaged or excessively worn

    parts. Clean the seal, seal retainer, wear ring and O-ring areas, thengrease them and set the top cap aside.

    g) Remove the top shaft by turning the top shaft-piston sub-assembly onits side and pushing the top shaft through the retainer nut and piston.Inspect the top shaft and piston sub-assembly thoroughly; replace anydamaged or excessively worn parts.

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    h) Remove the retainer nut from the piston by rotating it in acounter-clockwise direction.

    i) Remove the old O-rings from the retainer nut. Clean the retainer nutthoroughly and apply grease to all three O-ring grooves. Install newO-rings, then set the retainer nut aside.

    j) Remove the old O-ring from piston. Clean the O-ring groovethoroughly and apply grease to it. Install a new piston O-ring.

    2. Reassembly

    a) Apply an anti-seize compound to the threaded bore of the piston.Clean the retainer nut sealing surface on the top face of the piston.

    b) Align the retainer nut and piston threads. Rotate the retainer nut in aclockwise direction and tighten it securely. Apply additional grease tothe bore of the retainer nut and the piston O-ring OD.

    c) Inspect the actuator housing; replace it if damaged. Clean the housingthoroughly and apply grease to the entire housing I.D.

    d) Generously grease the top shaft and insert it slowly from the bottom ofthe piston and through the retainer nut. Firmly push the top shaft insidethe piston, allowing the top shaft to shoulder on the retainer nut.

    Caution:Use care during assembly to protect the O-rings and top shaft from damage.

    e) Lift the piston sub-assembly, carefully center it, then lower it slowlydown into the housing. A lifting eye (5/8" - UNC) may be threaded intothe top shaft and used to lift and lower the piston assembly intohousing .

    The top shaft counterbore should slip over and down onto the nub ofthe downstop. Keep the piston as level as possible and press firmly toinstall it into housing. A dead-blow hammer may be used (softly) to

    drive the piston into the housing bore.

    f) Again, generously grease the top shaft. Lift the top cap sub-assemblyand center it over the top shaft, then lower it slowly to allow the topshaft to slide smoothly through the seal. A slow and smooth movementwill help protect the seal from damage.

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    Caution:The top cap must shoulder on the housing. A slight tap from a dead-blowhammer may be needed to achieve proper shouldering.

    g) Insert the snap ring into the housing groove.

    Caution:Make sure the snap ring overlaps properly in the groove.

    h) Lightly grease the lock ring and insert it into the groove behind thesnap ring. Secure the lock ring with hex head bolts.

    i) Re-attach the pneumatic supply lines, then stroke the actuator severaltimes to verify that all seals are functioning properly.

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    XI. Periodic Maintenance

    The following maintenance schedule is recommended for normal operations:

    When actuator seals arereplaced.

    Inspect pistons, actuator head, actuator cap andtop shaft.

    Twice a month Close and open SSV. Operation should be smooth

    and consistent in both directions.

    Every month Inspect relief valve and control line fitting for

    leaks. Remove any debris from fitting.

    Every 6 months

    Visually inspect for external damage such asdents, scratches, etc. If scratched or chipped,touch up with paint to prevent rust. If dented,disassemble and inspect actuator to ensure thedamage does not affect the actuatorsperformance.

    At least every 12 months orwhen leakage occurs.

    Replace seals.

    Every five years or whenleakage occurs. Replace seal and O-ring seals.

    As required followingdamage or continualleaking.

    Replace relief valve.

    As required Clean debris from vent or breather holes.

    Note:In order to maintain the traceability requirements, all certified replacement

    parts must be documented and referenced in writing to each individual SSVActuator by its serial number.

    NO EXCEPTIONS

    Use the API 6A-Appendix L SSV Failure Report form for reporting failures.

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    MP13 Pneumatic Piston Actuator Assembly

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    Parts List

    Item Description Quantity

    1 Top Shaft 1

    2 Top Cap 1

    *3 Seal Retainer 1

    *4 O-Ring 1

    *5 O-Ring 2

    6 Retainer Nut 1

    *7 Wiper Ring 1

    *8 Seal 1

    *9 O-Ring 2

    10 Snap Ring 2

    11 Lock Ring 2

    12 Piston 1

    13 Downstop 1

    14 Spring Retainer 1

    15 Lock Washer 8

    16 Retainer Ring 1

    17 Housing 1

    18 Spring 1

    19 Lower Housing 1

    *20 Relief Valve 1

    21 Caution Tag 1

    22 Nameplate 1

    23 Drive Screw 4

    24 Lower Ring 1

    25 Bolt 8

    26 Bolt 4

    27 Vent Fitting 2

    *Included with repair kit. Recommended spare parts.

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    Technical Specifications

    Non-Retained Fluid Powered

    Model MP13

    Sizes MP1302 through MP1304

    Sizing See Operating Pressure Calculations

    API Classification 6A, 6D

    TRIM. Standard - AA

    PSL 1, 2, 3

    6A SSV Service Class - Performance Rating PR1 or PR2

    Maximum Operation Pressure 250 PSI

    Relief Device Setting 250 PSI (17 Bars) at 130F (54C)

    Test Pressure 375 PSI (26 Bars)

    Nominal spring preload at full closed position 750 lb force

    Weight 135 lb (61 kg)

    Temperature rating 0F to 150F (-18C to +66C)

    Retained Fluid Powered*

    Trim Same as valve

    PSL Same as valve

    Temperature rating Same as valve

    *Consult Cameron Willis Engineering for further details on retained fluid poweredactuators.

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    Physical Dimensions

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    SD 034723

    1.25

    8.12

    14.00

    A

    B

    C

    2.75 - 8 Stub Acme

    NPT

    Valve Size

    2

    3

    4

    19.81

    19.81

    22.18

    15.84

    15.84

    17.12

    13.74

    13.74

    15.00

    A B C

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    Clearance Removal Dimensions

    SD 034722

    A

    Actuator Removal

    Clearance

    A

    3

    4

    11.00

    11.00

    12.00

    2

    Valve Size

    Valve Size