| Вид документа | Каталожна сторінка |
|---|---|
| Виробник | JCI |
| Код документа | valve-repacking-kit-catalog-page |
| Група обладнання | Valve Repacking Kit |
| Сторінок | 12 |
| Мова документа | англійська |
| Розмір файлу | 0.1 МБ |
Текст документа
Valve Repacking Kit
Kit Includes
Note: This kit is intended for valves with 1/4 inch stems and replaces
V-4322-620, V9999-609 and V-9999-611.
V-9999-608 V-9999-610
2 Ring Packs 20 Ring Packs
1 Short Stem Guide 10 Short Stem Guides
1 Long Stem Guide 10 Long Stem Guides
1 Packing Follower 10 Packing Followers
1 Spacer 10 Spacers
1 Sleeve 3 Sleeves
1 Bullet 2 Bullets
1 Lubricant Capsule 4 Lubricant Capsules
1 1 in. x 2 in. Crocus Cloth 3 1 in. x 2 in. Crocus Cloth
1 Insertion/Removal Tool 1 Insertion/Removal Tool
NOTE: On stem assembly kits, only the parts required for that valve are
included in the kit.
Tools Required
• box-end wrench, 5/16 inch
• screwdriver
• spring compression tool, part number JC5389
Removing V-3000 Actuator
1. Disconnect the control line to the actuator.
2. Isolate the valve from the system and relieve any pressure.
14-669-9 1
Rev. C
© 1992 Johnson Controls, Inc. Printed in U.S.A.
! CAUTION: Failure to disconnect the control line prior to
servicing the equipment may result in personal
injury.
Stem Extension Stem Lock Screw
Upper Spring
Seat
Lower
Diaphragm
Case
Spring
Lower Spring
Seat
Set Screw
Figure 1: Valve with V-3000 Actuator
3. Remove the actuator by loosening the set screw on the bottom of the lower
diaphragm case.
4. Lift the actuator off of the valve.
Spring
Compressor
Locking Stud
Locking B ase
Knurled
Set Screws
Valve
Bonnet
Figure 2: Spring Compression Tool
2
5. Place the locking base of the spring compression tool part number JC5389
over the valve spring assembly so that the base rests on the surface of the
bonnet.
! WARNING: The spring is under pressure and failure to use the
compression tool could result in personal injury or
damage to surrounding equipment.
6. Tighten the knurled set screws to fasten the locking base securely to the
valve bonnet.
7. Insert the spring compressor into the locking base and over the spring
assembly.
8. Apply enough hand pressure to the top of the spring compressor to engage
the locking stud into the bottom notch of the base.
9. Using a 9/16 inch box-end wrench, hold the stem extension and loosen the
stem locking screw with a small blade screwdriver. Then, using the box-
end wrench, unscrew the stem extension.
10. Carefully apply enough hand pressure to disengage the spring compressor
and allow the spring to expand to its relaxed position.
11. Remove the spring compression tool and lift the upper spring seat and
spring off the valve.
Valve Stem
Packing Nut
Stem Guide
Ring Packs
Spacer Stuffing Box
Figure 3: V-3000 Valve Tops
12. Remove and retain the packing nut.
13. Remove and discard the stem guide/liner.
3
9/16" 3/4"
Shallow Deep
Stufffing Box Stufffing Box
Figure 4: Depth Comparison
14. Determine whether the stuffing box is deep or shallow by measuring the
inside and comparing it to the drawings in Figure 4.
15. Remove the old packings using the small end of the packing
insertion/removal tool. If present, remove the spacer and spring (not
shown).
16. Pull up and clean the accessible portion of the valve stem with the crocus
cloth provided.
17. Wipe the stem with a paper towel to remove any grit or debris. If the valve
stem is still rough or marred, the stem must be replaced.
18. V-3000 valves with shallow stuffing box: Drop one spacer into the stuffing
box.
V-3000 valves with deep stuffing box: No spacer is required, go to Step 17.
19. Apply a small amount of lubricant to the inside and outside of the ring
packs.
Note: Be sure that the O-rings are already positioned in the U-cups before
applying the lubricant.
20. Depending on stem thread length, proceed with steps outlined on page 5
or 6.
4
Using Bullet
Removal End
Packing
Insertion/Removal Tool
Insertion End
Ring Packs
Bullet
Center Piece
Figure 5: Bullet Installation Method
1. Slide the bullet onto the stem.
Note: If the bullet does not cover all threads on the valve stem, use the
sleeve method as described on the next page.
2 With the O-ring facing down, place one ring pack onto the bullet and slide it
onto the stem.
3. Remove the bullet.
4. Use the large end of the packing insertion/removal tool to push the ring
pack down into the stuffing box.
5. Repeat Steps 1 to 4 above for the second ring pack.
6. Install the stem guide for V-3000 (liner for V-3800) into the stuffing box.
7. Install the packing nut onto the stuffing box.
8. Tighten the packing nut finger tight only.
Note: Overtightening the packing nut can cause the stem to bind.
9. Move the stem up and down by hand to be sure that it operates freely.
10. Assemble the valve spring and actuator using Steps 1 through 11
(pages 2 and 3) in reverse order.
5
Using Sleeve
Removal End
Packing
Insertion/Removal Tool
Insertion End
Sleeve
Ring Packs
Center Piece
Figure 6: Using Sleeve
1. With the O-rings facing down, slide the ring packs onto the sleeve.
2. Slide the sleeve over the threaded portion of the stem.
3. Push both of the ring packs off of the sleeve.
4. Remove the sleeve.
5. Use the large end of the packing insertion/removal tool to push the ring
packs down into the stuffing box.
6. Install the stem guide for V-3000 (packing follower for V-3800) into the
stuffing box.
7. Install the packing nut onto the stuffing box.
8. Tighten the packing nut finger tight.
Note: Overtightening the packing nut can cause the stem to bind.
9. Move the stem up and down by hand to be sure that it operates freely.
10. Assemble the valve spring and actuator using Steps 1 through 11
(pages 2 and 3) in reverse order.
6
Valves with V-3800 (Oval Top) Actuator
1. Disconnect the control line to the actuator.
2. Isolate the valve from the system and relieve any pressure.
Stem Locking Screw
Upper Spring Seat
Stem Extension
Set Screw
Figure 7: Valve with V-3800 Actuator
3. Remove the actuator by loosening the actuator set screw on the bottom of
the lower diaphragm case.
4. Lift the actuator off of the valve.
5. Push down on the upper spring seat to compress the spring.
6. While maintaining compression, rotate the upper spring seat 90° to
disengage it from the stem extension.
! CAUTION: When removing the spring, wear eye protection and
gloves. To avoid injury or damage, DO NOT direct
the upper spring seat towards equipment or
personnel.
7. Hold the stem extension with a 3/8 inch open end wrench and loosen the
stem locking screw.
8. Unscrew the stem extension from the stem.
7
Valve Stem
Packing Follower Packing Nut
Stuffing Box
Spacer
Ring
Packs
Figure 8: V-3800 Oval Top Valve
9. Remove and retain the packing nut
10. Remove and discard the old stem liner. See Figure 6.
11. Remove the old packing using the small end of the packing
insertion/removal tool.
12. If present, remove the spacer and spring.
13. Pull up and clean the accessible portion of the valve stem with the crocus
cloth provided.
14. Wipe the stem with a paper towel to remove any grit or debris. If the valve
stem is still rough or marred, the stem must be replaced.
15. Drop one spacer into the stuffing box.
16. Apply a small amount of lubricant to the inside and outside of the ring
packs.
Note: Be sure that the O-rings are already positioned in the U-cups before
applying the lubricant.
17. Depending on stem thread length, proceed with steps outlined on page
5 or 6.
18. After the ring packs are installed, Install the spring and actuator by using
Steps 1 through 8 in reverse order.
8
VT Series Valves with V-3802 Actuator
1. Disconnect the control signal.
2. Isolate the valve from the system and relieve any pressure.
Upper
Spring
Seat
Stem
Guide Set Screw
Ring Packs
Figure 9: VT Valve with V-3802 Actuator
3. Remove the actuator by loosening the actuator set screw on the bottom of
the lower diaphragm case.
4. Lift the actuator off of the valve.
5. Compress the spring with the heel of the hand on the upper spring seat and
push to one side.
! CAUTION: When removing the spring, wear eye protection and
gloves. To avoid injury or damage, DO NOT direct
the upper spring seat towards equipment or
personnel.
5. Remove the spring seat and spring.
6. Remove and retain the packing nut and remove and discard the packing
follower.
9
Valve Stem
Packing Nut
Packing
Follower
Stuffing Box
Ring
Packs
Figure 10: VT Series Valve
7. Remove the old packings using the small end of the packing
insertion/removal tool.
8. Pull up and clean the accessible portion of the valve stem with the crocus
cloth provided. Wipe the stem with a paper towel to remove any grit or
debris. If the valve stem is still rough or marred, the stem must be
replaced.
9. Apply a small amount of lubricant to the inside of the ring packs and the
inside of the stuffing box. Be sure that the O-rings are already positioned in
the U-cups before applying the lubricant.
10. Slide the bullet onto the stem.
11. Place one ring pack onto the bullet and slide it onto the stem.
12. Remove the bullet.
13. Use the large end of the packing insertion/removal tool to push the ring
pack down into the stuffing box.
14. Repeat Steps 9 to 13 for the second ring pack.
15. Install the packing follower into the stuffing box.
16. Install the packing nut onto the stuffing box.
17. Tighten the packing nut finger tight.
Note: Overtightening the packing nut can cause the stem to bind.
18. Move the stem up and down by hand to be sure that it operates freely.
19. Install the spring and actuator by using Steps 1 through 5 in reverse order.
10
11
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