Manual de Operacion y Mantto Valvulas

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FLS Gate Valve with Double

Acting Hydraulic Actuator

TC1036

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All the information contained in this manual is the exclusive property of 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 A1

December 1992 Revision A2

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PREFACE

The procedures included in this book are to be performed in conjunc-tion with the requirements and recommendaconjunc-tions outlined in API Specifications. Any repairs to the equipment covered by this book should be done by an authorized Cameron service representative. Cameron will not be responsible for loss or expense resulting from any failure of equipment or any damage to any property or injury or death 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 other warranty, if any, on the equipment and may also result in the equip-ment no longer meeting applicable requireequip-ments.

File copies of this manual are maintained. Revisions and/or additions will be made as deemed necessary by Cameron. The drawings in this book are not drawn to scale, but the dimensions are accurate. This book covers a Cameron gate valve with actuator.

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1 *2 *3 4 5 6 7 *8 *9 10 11 12 13 14 15 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 1 1 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) Cylinder

Nut, 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

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(Assembly)

o

(Shown 90 Out Of Position) (Sub-Assy) 1 2 5 4 6 10 8 9 8 9 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 Valve

W/Bolt-on Stuffing Box

Item Qty Description

1 *2 *3 4 5 6 7 *8 *9 10 11 12 13 14 15 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 1 1 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) Cylinder

Nut, 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

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II. INSPECTION

A. Inspect the ring grooves for pitting and other visible damage. If defects are

found, 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 the cylinder.

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 it

is 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 or contact a Cameron representative.

III. INSTALLATION

The Cameron FLS with double acting hydraulic actuator operates properly when installed 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 operating pressure within the range of 1500 to 3000 psi. Pressurizing the upper port (farthest from the valve)closes the valve. Pressurizing the lower port (closest to the valve) opens the valve.

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

The required operating pressure for the double acting actuator is usually much 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 hydraulic system 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 the lower 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 hydraulic operating pressure is not available and there is little or no pressure in the valve.

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

a. Apply hydraulic pressure to the actuator (closing port cylinder port farthest 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 firmly contacts 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 port closest 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 gate

travel. In the fully closed position, the piston contacts the stem packing gland in the bonnet. The piston contacts the adjusting adapter in the upper cylinder head when the valve is fully open.

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B. Maintenance

1. Maintenance Schedule

The following maintenance checklist covers normal or routine service. More frequent maintenance may be necessary for unusual or more adverse conditions.

NORMAL CHRISTMAS TREE SERVICE

COMPONENT MAINTENANCE OPERATION SERVICE INTERVAL

Body Lubricate 10 Cycles**

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

Body Lubricate* Prior to Service

Body Flush with Appropriate

Neutralizing Fluid

After Service

Body Lubricate* After Flush

CHOKE MANIFOLD SERVICE

Valve Assembly

Pressure Test

Flush with Appropriate

Neutralizing Fluid, Operate, and Lubricate*

1 Week

1 Month***

*The valve is lubricated through a grease fitting located on the actuator bonnet. Recommended lubricants and amounts 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 have been processed through the valve.

2. Recommended lubricants

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MASTER LUBRICATION CHART Service Lubricant

Name Operational Properties Solvent

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

St a n d a rd Cru d e L o w Te m p . to -7 5 ° F D ies el H ig h Te m p . R T to +6 5 0 ° F W ith H 2S ( S o ur C rud e o r G a s ) W ith G a s We ll C o n d e n s a te s Ve ry Hi g h CO 2 (Pe r Po u n d ) 5 l b C a n 2 5 lb P a il 12 0 l b D rum 40 0 l b D rum

Standard CI-14 or_TF-41 E P P P F F P Mineral_Spirits 700149 700667 700668 700669 700670

Arctic NS-14 E E P P F F P Mineral Spirits 700123 700671 700672 700673 700674 Diesel Resistant SS-14 or TS-41 E P E P G G G Alcohol 700150 700675 700676 700677 700678 High Temperature HT-14 G F P E F F P Mineral Spirits 700217 700679 700680 700681 700682 High Temperature Moly 101 G P P E G F P Mineral Spirits 710194 E - Excellent F - Fair G - 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.)

113/16 21/16 29/16 29/16 31/8 31/16 31/16 41/8 41/16 51/8 51/8 61/8 63/8 All All To 10,000 15,000 To 5000 10,000 15,000 To 5000 10,000 5000 10,000 To 5000 To 5000 38 43 79 93 114 114 155 245 243 312 461 583 583 1.5 1.7 3.2 3.7 4.6 4.6 6.2 9.8 9.7 12.5 18.5 23.3 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 leaks past valve.

Valve gate and seat assembly leaks or is installed improperly.

Disassemble the valve and replace or reinstall the gate and/or seat. Line fluid leaks between

valve body and bonnet.

Bonnet gasket leaks. Tighten the bonnet nuts. If leak persists, replace the bonnet gasket. Valve does not close. Inadequate operating

pressure

Excessive friction on gate.

Hydrates or ice in valve body.

Apply 1500 to 3000 psi to the actuator close port.

Lubricate the valve.

Warm the valve body to melt hydrates or ice. Valve does not open. Inadequate operating

pressure.

Valve held closed by manual locking screw.

Excessive friction on gate.

Hydrates or ice in valve body.

Apply 1500 to 3000 psi to the actuator open port.

T u r n l o c k i n g s c r e w h a n d w h e e l c o u nt e r-clockwise full stroke. Lubricate the valve.

Warm the valve body to melt hydrates or ice.

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B. Actuator Troubleshooting Chart:

Malfunction Cause Corrective Action

Actuator fluid leaks around locking screw.

Adjusting nut-to-locking screw O-ring leaks

Remove and

disassemble manual locking screw assembly and replace O-ring. A c t u a t o r f l u i d l e ak s

around upper or lower end of cylinder.

Bonnet or adjusting nut-to-cylinder O-ring leaks.

Remove manual locking screw assembly, upper cylinder head and cylinder. Replace O-rings.

Actuator fluid leaks past piston.

Piston OD or ID O-ring leaks.

Remove manual locking screw assembly, upper cylinder head, cylinder, and piston. Replace O-rings.

Actuator fluid leaks out through bonnet relief fitting.

Packing gland OD or ID O-ring leaks.

Bleed all pressure from valve or backseat actuator stem against bonnet. Disassemble actuator. Remove packing gland and replace O-rings.

VI. SERVICE AND REPAIR A. Assembly Procedure

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

assembly drawing.

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

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

1. If applicable, install the locating pins (knurled end first) into the two holes in the 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 stuffing box studs and install the studs into their threaded holes in the bonnet face and stuffing box face of the body.

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4. 2000-10,000 psi WP:

Apply Teflon tape to the 1/2 inch NPT male grease fitting threads and install a 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 box and make up the fittings with approximately 100 ft lb of torque. Do not use Teflon 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 light coat 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 seal ring 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 grease

fitting 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 Size Torque (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 valve cavity 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 against the shoulder. Turn the stem clockwise 1/8 to 3/8 turn until the pin can be inserted 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 neck

to retain the pin.

11. Coat lip seal rings with 30 wt. oil and install in the seat grooves. Apply a coating of 30 wt. oil to the body counterbores. Apply a coat of grease to the OD 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 the cylindrical cavity. The face of the seat with the installed lip seals must be installed 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 buildup

of 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, for any sharp edges. Verify the lead-in chamfer is smooth and has the proper surface 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 prevent damage to the seats and gate, and making certain that the balance stem is inserted through the retainer plate and into the stuffing box. Due to the preload of the seats against the gate, it may be necessary to drive the gate in with a rubber mallet.

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

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 coat of grease to secure it.

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19. Slide the bonnet sub-assembly over the bonnet studs and the stem. The grease 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 packings installed, the vibration could cause damage to the stem and balance stem seal diameters.

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

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 cupped end (containing the metal springs) of the varipak faces the valve body. For HT-20 stem packing, see the bill of material for packing installation proce-dure.

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

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

25. Thread the stem protector into the stuffing box and make up the protector with 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. Apply grease to the actuator stem and slide the longer of the two packing installation sleeves over the end of the stem.

28. Install the packing over the installation sleeve and into the bonnet, making certain 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-20 stem packing, see the bill of material for packing installation procedure. 29. Remove the packing installation sleeve and drive the packing into the

bonnet until the packing gland can be fully made up.

30. Thread the packing gland into the bonnet and make it up with approximately 200 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 will

be on the side of the groove nearest the valve body. Lightly grease the O-ring and backup ring.

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34. Rotate the actuator stem counterclockwise until it stops in the gate neck. 35. Tap the top of the actuator stem to assure that the balance stem is

backseated.

36. Thread the piston on the actuator stem and stop it approximately 1/2" from the lower head.

37. Install the locknut loosely on the actuator stem above the piston and again tap the top of the actuator stem with a rubber mallet to assure the balance stem is backseated and make sure the actuator stem is rotated counter-clockwise until stopped in the gate neck.

38. Rotate the actuator stem clockwise 1/8 turn.

39. With a wrench on the flats at the top of the actuator stem to prevent stem rotation, rotate the piston clockwise until it contacts with packing gland, then rotate the piston 1/4 turn further clockwise. This pulls the balancing stem off backseat the proper distance.

40. Prevent the actuator stem and piston from rotating and make up the locknut to the top of the piston to approximately 100 ft-lb of torque.

41. Install the centering pin and lock it to the actuator stem with a set screw. 42. Install the cylinder head tiedown studs in the lower cylinder head. The studs

should extend no more than one thread below the flange.

43. Install the cylinder over the piston onto the lower cylinder head (either end first - the cylinder is symmetrical). Align the ports with the bonnet grease fitting.

44. Install the O-ring and backup ring onto the adjusting nut. 45. Install the lockscrew-to-adjusting nut O-ring and backup ring.

46. Install the grease fitting in the upper OD of the adjusting nut. Use Teflon tape.

47. Thoroughly grease the lockscrew threads and install the lockscrew in the adjusting nut. Turn the lockscrew counterclockwise until it stops against the internal shoulder.

48. Install the adjusting nut into the upper cylinder head.

49. Install the adjusting nut-cylinder head assembly over the studs onto the cylinder.

50. Install and evenly tighten nuts on the cylinder head studs. Apply recom-mended torque per step 7.

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53. While maintaining cylinder pressure, rotate the adjusting nut clockwise until the adjusting nut contacts the piston. Make sure the locking screw is fully retracted.

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

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

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 - TPI Recc. 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) 29/16" 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"/63/8" 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 cylinder pressure 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 locking screw, 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 the

stem.

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 now backseated in the

bonnet and in the l o w e r b o dy . Check the posi-tion of the lower stem.

6. Test the effec-tiveness of both backseats.

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 and the pressure trapped by the backseating process is released. 4) If pressure escapes quickly and then stops, the backseat if

effective. 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 figure 2.

Note: The standard grease fitting for 15,000 psi WP FLS valves is a special metal-sealing, In Bonnet

Pressure

Grease Fitting Body

Bleed By Pressure Cap Fitting Grease 1/8" Diameter Pin Bonnet

SD-10268-99

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1) Remove the grease fitting cap. 2) P l a c e a w r e n c h o n t h e h ex prepa rati on

of the fitting gland and back out the fitting approximately one turn. This procedure unseats the metal seal and vents any pressure on the fitting.

3) If pressure escapes quickly and then stops, the backseat is effective. 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 Cameron representative.

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

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

9. Clean grease from the upper and lower stuffing box so that a “hydraulic lock” will not prevent installing new packing. Inspect the stuffing box to determine that the bore is clean, and not pitted or scored. Inspect stems to ensure 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 the stem flats so that it cannot turn, thread the piston onto the upper stem until the counterbore in the bottom side of the piston bumps the top of the packing gland. 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 manual override two turns.

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

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

SD-10267-99 Hex Bleed By Pressure Cap Fitting Grease Bonnet

Grease Fitting Gland In Bonnet

Pressure Body Fitting Grease

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C. Ordering Replacement Parts

The only information needed for ordering replacement parts for a Cameron gate valve is the original valve assembly part number and the description of the part. The valve assembly part number is stamped on the valve body nameplate. It is recommended that a description of the valve assembly (size, pressure, trim) be included as a check on the assembly number, but this is not necessary if the assembly number is clearly readable.

It is not recommended to order replacement parts by using the part number off 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 to replace one component part number with another, the only way to ensure get-ting the updated component is to reference the valve assembly number and to 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 the latest revision of the assembly bill-of-material to obtain the appropriate and current replacement part number.

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P.O. Box 1212 Houston, TX 77251-1212 Ph: 713-939-2211 Fax: 713-939-2611 http://www.coopercameron.com

Manual de Operacion y Mantto Valvulas

FLS Gate Valve with Double

Acting Hydraulic Actuator

CONTENTS

.