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CAMERON France S.A.S

FRONT SHEET

1Project name

REVISE AND RESUBMIT

Seadrill

2

3

TO BE ISSUED AS FINALPROVIDED COMMENTS AREINCORPORATED

PO No : JU 312046 

BOP EquipmentHydraulic Gate Valve Operating &Maintenance Manual

Doc. NumberB011

Rev01

 File Name :SD-B312-BOP-B011-04-01

NO COMMENT, FINAL ISSUE

SIGN.Rig : B312 

DATE :

Deep Dril lerMOBILE OFFSHORE DRILLING UNIT

246 ft x 218 ft x 258 ft

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FLS Gate Valve with DoubleActing Hydraulic Actuator

TC1036

Operation and Maintenance Manual

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All the information contained in this manual is the exclusive propertyof Cameron. Any reproduction or use of the calculations, drawings,photographs, procedures or instructions, either expressed or implied,is forbidden without the written permission of Cameron or its author-ized agent.

Initial Release A1December 1992

Revision A2September 1998

Copyright © 1998 all rights reservedby

Cooper Cameron CorporationCameron Division

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PREFACE

The procedures included in this book are to be performed in conjunc-tion with the requirements and recommendations outlined in APISpecifications. Any repairs to the equipment covered by this bookshould be done by an authorized Cameron service representative.

Cameron will not be responsible for loss or expense resulting fromany failure of equipment or any damage to any property or injury ordeath to any person resulting in whole or in part from repairs per-formed by other than authorized Cameron personnel. Such unauthor-ized repairs shall also serve to terminate any contractual or otherwarranty, if any, on the equipment and may also result in the equip-ment no longer meeting applicable requirements.

File copies of this manual are maintained. Revisions and/or additionswill be made as deemed necessary by Cameron. The drawings in thisbook are not drawn to scale, but the dimensions are accurate.

This book covers a Cameron gate valve with actuator.

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CONTENTS

Page

I. ILLUSTRATIONS AND PARTS LISTS 6

II. INSPECTION 10

III. INSTALLATION 10

IV. OPERATION AND MAINTENANCE 10

A. Operation 10

B. Maintenance 12

V. TROUBLESHOOTING 14VI. SERVICE AND REPAIR 15

A. Assembly Procedure 15

B. Stem Packing Replacement 21

C. Ordering Replacement Parts 23

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(Sub-Assembly)

1

2

4

3

5

11

13

6

14

15

41

17

16

17

16

27

23

22

21

26

29

31

40

34

30

26

22

23

38

25

12

10

8

28

7

9

8

9

28

8

20

19

18

24   39

32

33

35

11

37

36

Ref SK-11573-01   SD-017248

Gate Valve With Bolt On Stuffing Box

2-1/16" 10,000 psi WP FLS Tailrod Hydraulic

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Parts List: 2-1/16" 10,000 psi WP FLS Tailrod Hydraulic Gate ValveW/Bolt-on Stuffing Box

Item Qty Description

1

*2

*3

4

5

6

7

*8

*9

10

11

12

13

1415

16

*17

*18

*19

*20

21

*22

*23

24

25

26

27

*28

29

30

*31

*32

33

34

35

36

*37

38

39

40

41

42

43

44

45

1

1

1

1

1

1

1

3

4

2

1

6

6

11

1

2

3

1

1

1

2

2

1

8

8

2

1

1

1

2

1

8

8

1

1

1

1

1

1

2

1

1

1

4.60 lb

1

Locking Screw

O-Ring (Adjusting Nut)

Back-Up Ring (Adjusting Nut)

Adjusting Nut

Fitting, Grease (Adjusting Nut)

Pin, Centering

Screw, Socket Head Set (Center Pin to Stem)

O-Ring, (Piston & Heads)

Back-Up Ring, (Piston & Heads)

Screw, Socket Head Set (Cylinder Head to Adjusting Nut)

Cylinder Head

Stud, (Cylinder Head Tie Down)

Nut, Heavy Hex (Cylinder Head Tie Down)

CylinderNut, Elastic Stop (Piston Lock)

Piston

O-Ring, (Stem to Piston & Gland)

Back-Up Ring, (Stem to Piston & Gland)

O-Ring, (Gland to Head)

Back-Up Ring (Gland to Head)

Packing Gland

Packing (Bonnet & Stuffing Box)

Ring, Back-Up (Bonnet & Stuffing Box)

Bonnet with Lower Cylinder Head

Stud, (Bonnet)

Nut, Heavy Hex (Bonnet)

Fitting, Grease (Bonnet & Stuffing Box)

Ring Gasket (Bonnet)

Stem

Stem, Balancing

Sub-Assembly, Seat & Seals

Gate

Retainer Plate

Stud (Stuffing Box)

Nut, Heavy Hex (Stuffing Box)

Stuffing Box, Bolt-On

Ring Gasket (Stuffing Box)

Body

Protector & Indicator Stem

Pin, Dowel

Adapter Pipe (Cylinder OD)

Fitting, Grease (Bonnet)

Nameplate (Body)

Nameplate (Cylinder OD)

Grease, Standard Valve Lubricant

  Accessory Item

Handwheel

*Recommended Spare Part

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(Assembly)

o

(Shown 90 Out Of Position)

(Sub-Assy)

1

2

5

4

6

10

8

9

89

17

14

8

9

25

26

23

22

31

40

33

27

37

22

23

39

45

3

12

13

11

9

41

7

15

16

18

41

17

18

19

20

42

21

27

24

28

29

43

38

32

35

34

36

30

Ref SK-11573-02   SD-017249

Gate Valve With Bolt-On Stuffing Box

3-1/16" 10,000 psi WP Tailrod Hydraulic

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Parts List: 2-1/16" 10,000 psi WP FLS Tailrod Hydraulic Gate ValveW/Bolt-on Stuffing Box

Item Qty Description

1

*2

*3

4

5

6

7

*8

*9

10

11

12

13

1415

16

*17

*18

*19

*20

21

*22

*23

24

25

26

27

*28

29

30

*31

*32

33

34

35

36

*37

38

39

40

41

42

43

44

45

1

1

1

1

1

1

1

3

4

2

1

6

6

11

1

2

3

1

1

1

2

2

1

8

8

2

1

1

1

2

1

8

8

1

1

1

1

1

1

2

1

1

1

4.60 lb

1

Locking Screw

O-Ring (Adjusting Nut)

Back-Up Ring (Adjusting Nut)

Adjusting Nut

Fitting, Grease (Adjusting Nut)

Pin, Centering

Screw, Socket Head Set (Center Pin to Stem)

O-Ring, (Piston & Heads)

Back-Up Ring, (Piston & Heads)

Screw, Socket Head Set (Cylinder Head to Adjusting Nut)

Cylinder Head

Stud, (Cylinder Head Tie Down)

Nut, Heavy Hex (Cylinder Head Tie Down)

CylinderNut, Elastic Stop (Piston Lock)

Piston

O-Ring, (Stem to Piston & Gland)

Back-Up Ring, (Stem to Piston & Gland)

O-Ring, (Gland to Head)

Back-Up Ring (Gland to Head)

Packing Gland

Packing (Bonnet & Stuffing Box)

Ring, Back-Up (Bonnet & Stuffing Box)

Bonnet with Lower Cylinder Head

Stud, (Bonnet)

Nut, Heavy Hex (Bonnet)

Fitting, Grease (Bonnet & Stuffing Box)

Ring Gasket (Bonnet)

Stem

Stem, Balancing

Sub-Assembly, Seat & Seals

Gate

Retainer Plate

Stud (Stuffing Box)

Nut, Heavy Hex (Stuffing Box)

Stuffing Box, Bolt-On

Ring Gasket (Stuffing Box)

Body

Protector & Indicator Stem

Pin, Dowel

Adapter Pipe (Cylinder OD)

Fitting, Grease (Bonnet)

Nameplate (Body)

Nameplate (Cylinder OD)

Grease, Standard Valve Lubricant

  Accessory Item

Handwheel

*Recommended Spare Part

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II. INSPECTION

A. Inspect the ring grooves for pitting and other visible damage. If defects arefound, contact Cameron personnel for repair work.

B. Actuator Inspection

1. Attach a temporary supply line to the close NPT port in the lower end of thecylinder.

2. Apply 50 to 150 psi gas or hydraulic supply pressure to the cylinder.

3. Inspect the valve bore to ensure that the gate bore is properly aligned. If itis not fully open, contact a Cameron service representative.

4. Release the supply pressure.

5. If the valve does not stroke smoothly or if a leak is detected, see Part V orcontact a Cameron representative.

III. INSTALLATION

The Cameron FLS with double acting hydraulic actuator operates properly wheninstalled in any orientation. The valve is a bi-directional sealing design.

IV. OPERATION AND MAINTENANCE

A. Operation

The double acting hydraulic actuator on a FLS gate valve requires operatingpressure within the range of 1500 to 3000 psi. Pressurizing the upper port(farthest from the valve)closes the valve. Pressurizing the lower port (closestto the valve) opens the valve.

The valve will remain in position after release of actuator pressure due to thebalanced stem design (lower stem balances pressure thrust on upper stem),and the actuator does not contain springs. Stem packings at the upper andlower stems seal line pressure. However, should some leakage occur pastthe upper stem packing, a vent port and seals above the vent will prevent linepressure from entering the actuator.

The required operating pressure for the double acting actuator is usuallymuch lower than published minimum of 1500 psi. That value takes into ac-count fouling of the valve by drilling fluids, etc., and is not expected to repre-sent the “normal” situation. The actuator has a maximum rated working

pressure of 3000 psi.

Hydraulic oils or water that contains a water soluble lubricant (Cameron lubri-cant 590X) can be used as the operating fluid. 590X protects the hydraulicsystem and has good flow characteristics. Add an appropriate amount of eth-ylene glycol (antifreeze) for freeze protection of water based fluid.

The valve lower stem indicates valve position, viewed through slots in thelower stem protector/indicator. When the valve is open, the lower stem is up(towards the valve body). When the valve is closed, the lower stem is down(away from the valve body).

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1. The manual locking screw may be used to close the valve when hydraulicoperating pressure is not available and there is little or no pressure in thevalve.

2. The manual locking screw may also be used to lock the valve in the closedposition.

a. Apply hydraulic pressure to the actuator (closing port cylinder portfarthest from the valve) to close the valve.

b. Release hydraulic pressure from the actuator.

c. Turn the locking screw handwheel clockwise (to the right) until it firmlycontacts the centering pin on the piston.

3. To ‘unlock’ and open a closed valve:

a. Turn the locking screw counterclockwise (to the left) until the locking

screw shoulder contacts the adjusting nut.

b. Apply hydraulic pressure to the actuator (opening port, cylinder portclosest to the valve) to open the valve.

c. Release hydraulic pressure from the actuator.

Note:  Actuator internal stops absorb piston force at both ends of the stroke to limit gatetravel. In the fully closed position, the piston contacts the stem packing gland in thebonnet. The piston contacts the adjusting adapter in the upper cylinder head whenthe valve is fully open.

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B. Maintenance

1. Maintenance Schedule

The following maintenance checklist covers normal or routine service. Morefrequent maintenance may be necessary for unusual or more adverseconditions.

NORMAL CHRISTMAS TREE SERVICE

COMPONENT MAINTENANCE OPERATION SERVICE INTERVAL

Body Lubricate 10 Cycles**

UNUSUAL TEMPORARY SERVICE - CEMENT THROUGH -ACIDIZE THROUGH - OTHER UNUSUAL SERVICE

COMPONENT MAINTENANCE OPERATION SERVICE INTERVAL

Body Lubricate* Prior to Service

Body Flush with AppropriateNeutralizing Fluid

After Service

Body Lubricate* After Flush

CHOKE MANIFOLD SERVICE

COMPONENT MAINTENANCE OPERATION SERVICE INTERVAL

Valve Assembly

Valve Assembly

Pressure Test

Flush with AppropriateNeutralizing Fluid, Operate, andLubricate*

1 Week

1 Month***

*The valve is lubricated through a grease fitting located on the actuator bonnet. Recommended lubricants andamounts are shown below.

**One cycle equals opening and closing the valve one time. The service interval can vary according to application,fluids used, and well conditions.

***Periodic maintenance must also be performed after every “kick” or other conditions when drilling fluids havebeen processed through the valve.

2. Recommended lubricants

For optimum performance, only Cameron valve lubricants should be used.

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MASTER LUBRICATION CHART

ServiceLubricant

NameOperational Properties Solvent

Quantities (By Part Number)Available on a Standard Order Basis

   S   t  a  n   d  a  r   d   C  r  u   d  e

   L  o  w   T  e  m  p .   t  o  -   7   5   °   F

   D   i  e  s  e   l

   H   i  g   h   T  e  m  p .   R   T   t  o  +   6   5   0   °   F

   W   i   t   h   H   2   S   (   S  o  u  r   C  r  u   d  e  o  r   G  a  s   )

   W   i   t   h   G  a  s   W  e   l   l   C  o  n   d  e  n  s  a   t  e  s

   V  e  r  y   H   i  g   h   C   O   2

   (   P  e  r   P  o  u  n   d   )

   5   l   b   C  a  n

   2   5   l   b   P  a   i   l

   1   2   0   l   b   D  r  u  m

   4   0   0   l   b   D  r  u  m

StandardCI-14 orTF-41

E P P P F F PMineralSpirits

700149 700667 700668 700669 700670

Arctic NS-14 E E P P F F P

Mineral

Spirits 700123 700671 700672 700673 700674

DieselResistant

SS-14 orTS-41

E P E P G G G Alcohol 700150 700675 700676 700677 700678

HighTemperature

HT-14 G F P E F F PMineralSpirits

700217 700679 700680 700681 700682

HighTemperature

Moly 101 G P P E G F PMineralSpirits

710194

E - Excellent F - FairG- Good P - Poor

  Example for Ordering: Order Part Number 700672 for 25 lb of NS-14

3. Amount of lubricant required:

Bore Size

(in.)

Pressure

Rating

Lubricant Volume

Required (cu in.)

Lubricant Weight

(lb)

Approximate Follower

Plate Travel (in.)

113

 / 162

1 / 16

29 / 1629 / 163

1 / 8

31 / 16

31 / 1641 / 84

1 / 16

51 / 8

51 / 861 / 8

63 / 8

AllAll

To 10,00015,000

To 500010,00015,000

To 500010,0005000

10,000To 5000

To 5000

  38  43  79  93114114155245243312461583

583

  1.5  1.7  3.2  3.7  4.6  4.6  6.2  9.8  9.712.518.523.3

23.3

  .5  .7  1.3  1.6  1.9  1.9  2.6  4.2  4.1  5.3  7.8  9.9

  9.9

SD-4185 

SD-4130 

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V. TROUBLESHOOTING

A. Valve Troubleshooting Chart:

Malfunction Cause Corrective Action

Well pressure leakspast valve.

Valve gate and seatassembly leaks or isinstalled improperly.

Disassemble the valveand replace or reinstallthe gate and/or seat.

Line fluid leaks betweenvalve body and bonnet.

Bonnet gasket leaks. Tighten the bonnet nuts.If leak persists, replacethe bonnet gasket.

Valve does not close. Inadequate operatingpressure

Excessive friction ongate.

Hydrates or ice in valvebody.

Apply 1500 to 3000 psito the actuator closeport.

Lubricate the valve.

Warm the valve body tomelt hydrates or ice.

Valve does not open. Inadequate operatingpressure.

Valve held closed bymanual locking screw.

Excessive friction ongate.

Hydrates or ice in valvebody.

Apply 1500 to 3000 psito the actuator openport.

Turn locking screwhandwheel counter-clockwise full stroke.

Lubricate the valve.

Warm the valve body tomelt hydrates or ice.

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B. Actuator Troubleshooting Chart:

Malfunction Cause Corrective Action

Actuator fluid leaksaround locking screw.

Adjusting nut-to-lockingscrew O-ring leaks

Remove anddisassemble manuallocking screw assemblyand replace O-ring.

Actuator f lu id leaksaround upper or lowerend of cylinder.

Bonnet or adjustingnut-to-cylinderO-ring leaks.

Remove manual lockingscrew assembly, uppercylinder head andcylinder. Replace O-rings.

Actuator fluid leakspast piston.

Piston OD or ID O-ringleaks.

Remove manual lockingscrew assembly, upper

cylinder head, cylinder,and piston. ReplaceO-rings.

Actuator fluid leaks outthrough bonnet relieffitting.

Packing gland OD or IDO-ring leaks.

Bleed all pressure fromvalve or backseatactuator stem againstbonnet. Disassembleactuator. Removepacking gland andreplace O-rings.

VI. SERVICE AND REPAIR

A. Assembly Procedure

Notes:    • Refer to the engineering bill of material for the valve components and valveassembly drawing.

• Prior to actual assembly, thoroughly clean all parts. Do not use chlorinatedsolvents on elastomers.

• Apply assembly grease to threads and seal surfaces of all components priorto assembly. Use the grease specified on the bill of material.

1. If applicable, install the locating pins (knurled end first) into the two holes inthe bonnet face and stuffing box face of the body. Take care not to upset

the outside diameter of the pins.

2. Apply thread dope to the class 3 threaded ends of the bonnet and stuffingbox studs and install the studs into their threaded holes in the bonnet faceand stuffing box face of the body.

3. Coat the bonnet and stuffing box seal bores and the lower head seal borewith grease.

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4. 2000-10,000 psi WP:

Apply Teflon tape to the 1/2 inch NPT male grease fitting threads and installa grease fitting in the bonnet flange grease port and the stuffing box flange

grease port. Thread the caps on the fittings hand-tight.

15,000 psi WP:

Install a metal-sealing grease fitting in the bonnet and in the stuffing boxand make up the fittings with approximately 100 ft lb of torque. Do not useTeflon tape on the threads. Thread the caps on the fittings hand-tight.

5. 2000-5000 psi WP:

Install the seal ring in the groove in the face of the stuffing box, using a lightcoat of grease to secure it.

10,000-15,000 psi WP:

Apply a very light coat of grease or a coat of light oil to the stuffing box sealring and install it in the groove in the body face marked “Stuffing Box”.

6. Slide the stuffing box over the studs on the bottom of the body. The greasefitting must be 90°to the valve bore.

7. Install the stuffing box nuts and tighten them evenly per Table I.

Table I: Recommended Stuffing Box Stud Bolt Torque

Bolt SizeTorque (ft-lb N.m)

3/4" - 10 UNC 200 (270)

7/8" - 9 UNC 300 (410)

1" - 8 UNC 475 (645)

1-1/8" - 8UN 675 (915)

1-1/4" - 8 UN 950 (1290)

1-3/8" - 8 UN 1275 (1730)

1-1/2" - 8UN 1675 (2270)

1-5/8" - 8UN 2150 (2915)

1-3/4" - 8UN 2700 (3660)

8. Apply grease to the retainer plate and place it in the bottom of the valvecavity against the face of the stuffing box.

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9. Install the balance stem in the lower gate neck:

Thread and Pin Connection:

Thread the stem counterclockwise into the gate neck until it stops againstthe shoulder. Turn the stem clockwise 1/8 to 3/8 turn until the pin can beinserted through the gate neck to lock the stem in place.

Pin-Only Connection:

Install the stem in the gate neck, align the pin holes, and insert the pin.

10. Peen over the edges of the hole in two places on each side of the gate neckto retain the pin.

11. Coat lip seal rings with 30 wt. oil and install in the seat grooves. Apply acoating of 30 wt. oil to the body counterbores. Apply a coat of grease to theOD and front seal faces of the seats (no grease should be on the back faces

where the lip seals sit). Install the seats into the body counterbores in thecylindrical cavity. The face of the seat with the installed lip seals must beinstalled against the seal surface of the body counterbore.

Note:  If 30 wt. oil is not available, a very light coat of grease may be used, but no buildupof grease on the body counterbore or between the two lip seals can be tolerated,as this could damage parts on assembly.

12. Inspect the leading edge of the gate, which wedges between the seats, forany sharp edges. Verify the lead-in chamfer is smooth and has the propersurface finish.

13. Apply valve grease to both faces and lead-in edge of the gate.

14. Apply grease to the balance stem.

15. Install the gate into the body cavity between the seats taking care to preventdamage to the seats and gate, and making certain that the balance stem isinserted through the retainer plate and into the stuffing box. Due to thepreload of the seats against the gate, it may be necessary to drive the gatein with a rubber mallet.

16. Tap the gate down lightly until the balance stem backseats in the stuffingbox.

17. Thread the actuator stem counterclockwise into the upper gate neck.

18. 2000-5000 psi WP:

Install the seal ring in the groove in the face of the bonnet, using a light coatof grease to secure it.

10,000-15,000 psi WP:

Apply a very light coat of grease or a coat of light oil to the bonnet seal ringand install it in the groove in the body face marked “bonnet”.

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19. Slide the bonnet sub-assembly over the bonnet studs and the stem. Thegrease fitting must be 90°to the valve bore.

20. Install the bonnet nuts and snug them up with a hand wrench. Do not use

a hammer wrench or impact wrench at this point. Without the packingsinstalled, the vibration could cause damage to the stem and balance stemseal diameters.

21. For “J”, “U”, or varipak stem packings, apply grease to the packing. Slip theshorter of the two packing installation sleeves over the end of the balancestem.

22. Install the packing over the installation sleeve and into the stuffing box,making certain that the rounded nose of “J” or “U” packing or the cuppedend (containing the metal springs) of the varipak faces the valve body. ForHT-20 stem packing, see the bill of material for packing installation proce-

dure.

23. Remove the packing installation sleeve and drive the packing into thestuffing box until the stem protector can be fully made up.

24. Install the backup ring (if applicable) over the end of the balance stem andinto the stuffing box seal bore against the packing.

25. Thread the stem protector into the stuffing box and make up the protectorwith approximately 200 ft-lb torque.

26. Install the O-rings and backup rings in the two grooves in the packing gland.The backup rings will be on the sides of the grooves nearest the valve body.

Lightly grease the O-rings and backup rings.

27. For “J”, “U”, or varipak stem packings, apply grease to the packing. Applygrease to the actuator stem and slide the longer of the two packinginstallation sleeves over the end of the stem.

28. Install the packing over the installation sleeve and into the bonnet, makingcertain that the rounded nose of the “J” or “U” packing or the cupped end(containing the metal springs) of the varipak faces the valve body. For HT-20stem packing, see the bill of material for packing installation procedure.

29. Remove the packing installation sleeve and drive the packing into thebonnet until the packing gland can be fully made up.

30. Thread the packing gland into the bonnet and make it up with approximately200 ft-lb of torque.

31. Tighten the bonnet nuts evenly to torque values per Table II on page 20.

32. Install the O-ring and backup ring on the lower head. The backup ring willbe on the side of the groove nearest the valve body. Lightly grease theO-ring and backup ring.

33. Install the O-ring and backup rings on the piston. Lightly grease the rings.

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53. While maintaining cylinder pressure, rotate the adjusting nut clockwise untilthe adjusting nut contacts the piston. Make sure the locking screw is fullyretracted.

54. Bleed off pressure from the “open” port.

55. Apply pressure to the close port to move the piston down. Bleed offpressure.

56. Rotate the adjusting nut 1/8 additional turn clockwise.

57. Apply pressure to the open port.

58. Check for gate bore alignment.

59. If not correct, repeat steps 53 through 57 by resetting adjusting nut.

Table II: Recommended Bonnet Stud Torque

Valve Size Bonnet Stud Size - TPIRecc. Stud Torque

ft-lb (N••m)

113 / 16" 10,000 1.125-8 675 (915)

113 / 16" 15,000 1.250-8 950 (1290)

21 / 16" 2000 .625-11 115 (160)

21 / 16" 3000/5000 .875-9 300 (410)

21 / 16" 10,000 1.125-8 675 (915)

21 / 16" 15,000 1.250-8 950 (1290)

29 / 16" 2000 .750-10 200 (270)

29

 / 16" 3000/5000 1.000-8 475 (645)2

9 / 16" 10,000 1.250-8 950 (1290)

29 / 16" 15,000 1.500-8 1675 (2270)

31 / 8" 2000 .750-10 200 (270)

31 / 8" 3000 .875-9 300 (410)

31 / 8" 5000 1.125-8 675 (915)

31 / 16" 10,000 1.250-8 950 (1290)

31 / 16" 15,000 1.500-8 1675 (2270)

41 / 16“ 2000 .875-9 300 (410)

41 / 16" 3000 1.125-8 675 (915)

41 / 16" 5000 1.250-8 950 (1290)

41 / 16" 10,000 1.625-8 2150 (2915)

51 / 8" 5000 1.375-8 1275 (1730)

51 / 8" 10,000 1.375-8 1275 (1730)

61 / 8"/6

3 / 8" 2000 1.000-8 475 (645)

61 / 8"/6

3 / 8" 3000 1.125-8 675 (915)

61 / 8"/6

3 / 8" 5000 1.375-8 1275 (1730)

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B. Stem Packing Replacement

1. With the valve in the closed position, bleed down the actuator cylinderpressure on both the opening and closing sides of the piston.

2. Remove the upper cylinder head, the cylinder head studs, and the cylinder.

3. Remove the piston lock nut. If the valve is equipped with a manual lockingscrew, the centering pin must be removed prior to removal of the lock nut.

4. Remove the piston by rotating it counter-clockwise and threading it from thestem.

5. Put a wrench on the stem flats and turn the stem clockwise (12 to 34 turns,depending on valve size) until it comes to a full stop. The valve is nowbackseated in thebonnet and in the

lower body.Check the posi-tion of the lowerstem.

6. Test the effec-tiveness of bothbackseats.

a. Valves rated up to 10,000 psi working pressure. Refer to Figure 1.

1) Remove the grease fitting cap.

2) Trip the ball in the grease fitting check valve by inserting a 1/8"diameter by 3/4" long pin into the run of the fitting.

3) Replace the cap slowly until the ball in the fitting is unseated andthe pressure trapped by the backseating process is released.

4) If pressure escapes quickly and then stops, the backseat ifeffective. Proceed to step 7.

5) If pressure continues to escape, the backseat is ineffective.

a) Backseat the valve again. Repeat steps 1 through 5.

b) If the backseat continues to be ineffective, contact a Cameron

representative.

b. Valves rated at 15,000 psi working pressure and above. Refer to figure2.

Note:  The standard grease fitting for 15,000 psi WP FLS valves is a special metal-sealing,high pressure fitting, containing a check valve. The bonnet port housing this fittingis a special preparation without pipe threads which accepts only this type of fitting.

Important:  DO NOT use Teflon tape or thread sealant on these fittings.

In Bonnet

Pressure

Grease Fitting Body

Bleed By

Pressure

Cap

FittingGrease1/8" Diameter Pin   Bonnet

SD-10268-99

Figure 1: Low Pressure Grease Fitting (SD-10268-99)

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1) Remove thegrease fittingcap.

2) Place awrench onthe hexpreparationof the fitting gland and back out the fitting approximately one turn.This procedure unseats the metal seal and vents any pressure onthe fitting.

3) If pressure escapes quickly and then stops, the backseat iseffective. Proceed to step 7.

4) If pressure continues to escape, the backseat is ineffective.

a) Backseat the valve again. Repeat steps 1 through 5.

b) If the backseat continues to be ineffective, contact a Cameronrepresentative.

7. Remove the stem protector from the bottom of the body and the packinggland from the lower cylinder head on the bonnet.

8. Attach a grease gun to the fitting in the bonnet or lower stuffing box flangeand pump packing out of the stuffing box with grease.

9. Clean grease from the upper and lower stuffing box so that a “hydrauliclock” will not prevent installing new packing. Inspect the stuffing box to

determine that the bore is clean, and not pitted or scored. Inspect stems toensure that the surface is free of burrs and pits.

10. Apply a light coat of grease to stems, stuffing box bores, and stem packings.Install new stem packings per part VI.A.21 through 30 on page 18.

11. Using a wrench on the piston stem flats, thread the stem counter-clockwise(same number of turns counted in step 5 above) until it comes to a full stop.Upper stem is now off back seat. Holding the stem with a wrench on thestem flats so that it cannot turn, thread the piston onto the upper stem untilthe counterbore in the bottom side of the piston bumps the top of the packinggland. Make up another 1/8 turn. The lower stem is now off backseat, and

the lower stop in the piston stroke is set.

12. Replace the cylinder, cylinder studs and nuts, and upper cylinder head.Loosen the set screws in the upper cylinder head and back out the manualoverride two turns.

13. Apply operating pressure to the lower cylinder port to open the valve. Threadthe manual lock screw housing into the cylinder head until it contacts thepiston. Make up the lock screw housing another 1/8 turn and run in setscrews to lock it. Upper piston stop is now set, and the valve is ready forservice.

Figure 2: Hi gh Pressure Grease Fitting (SD-10267-99)

SD-10267-99HexBleed By

Pressure

Cap

Fitting

GreaseBonnet

Grease Fitting Gland

In BonnetPressure

Body

Fitting

Grease

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C. Ordering Replacement Parts

The only information needed for ordering replacement parts for a Camerongate valve is the original valve assembly part number and the description of

the part. The valve assembly part number is stamped on the valve bodynameplate. It is recommended that a description of the valve assembly (size,pressure, trim) be included as a check on the assembly number, but this isnot necessary if the assembly number is clearly readable.

It is not recommended to order replacement parts by using the part numberoff the old part or by referring to a file copy of the valve assembly bill-of-mate-rial. If an engineering change has been implemented to the valve assembly toreplace one component part number with another, the only way to ensure get-ting the updated component is to reference the valve assembly number andto reference the part by description (gate, seat, stem, etc. Part descriptions

are shown in the parts list, Part I.D.). Cameron personnel can then check thelatest revision of the assembly bill-of-material to obtain the appropriate andcurrent replacement part number.

 

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P.O. Box 1212

Houston, TX 77251-1212Ph: 713-939-2211

Fax: 713-939-2611

http://www.coopercameron.com

Cooper Ca eron Corporation Ca eron i i ion rinted in 0 C C TC1036