Swagelok VB03 Series Manuale utente

Seal retainer

Stem seal Fire seal Gland bushing

Carefully read entire instruction before servicing valve.

Kit Contents (contents may vary by kit)

VB03 Series Process Interface Valve

Maintenance Instructions

Wave spring

(25 mm and 38 mm)

Disc spring (2)

Slip ring

Gland bolt (2) Stem Seat (2) Body seal Ball

Hex head screw

Washer Spring (50 mm) (2) Handle sleeve Handle

(type may vary)

Symbols

Discard

Bore Kit Number

25 mm

K‐VB25/38‐STMSL‐TOOL‐KIT

K‐VB25/38‐ID‐GUIDE‐TOOL

K‐VB25/38‐OD‐GUIDE‐TOOL

K‐VB25/38‐PUSHER‐TOOL

38 mm

K‐VB25/38‐STMSL‐TOOL‐KIT

K‐VB25/38‐ID‐GUIDE‐TOOL

K‐VB25/38‐OD‐GUIDE‐TOOL

K‐VB25/38‐PUSHER‐TOOL

50 mm

K‐VB50‐STMSL‐TOOL‐KIT

K‐VB50‐ID‐GUIDE‐TOOL

K‐VB50‐OD‐GUIDE‐TOOL

K‐VB50‐PUSHER‐TOOL

Tool Size Component

Vise

—Valve body

Open-ended wrench/socket

Hex head screw, gland bolts, and flange bolts

Bore Size Hex head screw Gland Bolts Flange Bolts

25 mm 13 mm 6 mm hex 14 mm hex

38 mm 13 mm 6 mm hex 14 mm hex

50 mm 17 mm 8 mm hex 17 mm hex

Torque wrench

Capable of 1200 in·lb (135 N·m) Hex head screw, gland bolts, and flange bolts

Plastic pick

—Body seal, seat, ball, fire seal, seal retainer,

and stem seal

Lubricants/fluids P-80®(or equivalent)

Molykote®1000

Permanent thread-locking fluid

Molykote 111

Molykote G-Rapid Plus

Seat and handle sleeve

Flange bolt

Gland bolt and hex head screw

Stem, body, ID surface, and OD surface

Stem, seal retainer, and ID surface

Stem seal assembly tools

Stem seal and stem

Rubber mallet,

Permanent marker —If applicable

Tools Required

Exploded View

Available Kits:

Handle Kit:handle sleeve, hex

head screw, washer and handle

Seat Kit: ball, body seal, seats, and

springs (50 mm only)

Stem Kit: disc springs, wave spring

(25 mm and 38 mm only), gland

bushing, fire seal, seal retainer,

stem seal, gland bolts, slip ring,

stem, ball, body seal, seats, and

springs (50 mm only)

Available Flanges:

Cam

(locking cam version)

Washer

Hex head screw

Handle

Bolted gland

(Locking handle version will have tab)

Wave spring

Gland bushing

Flange

bolts

Flange

Body

seal Ball

Spring

SeatSeat

Stem

Slip ring

Body

Threaded ange

Probe ange

Spring

Disc springs

Fire seal

Seal retainer

Stem seal

Handle sleeve

Gland

bolts

Handle

stop pins

*Bold indicates kit component.

Standard ange

Critical Sealing Surfaces

The surfaces highlighted in red are the critical sealing surfaces. These surfaces must be free of scratches, dents, disfigurement,

and debris to ensure successful maintenance and leak-free performance.

Body

Flange

Stem seal

Stem

Taller handle

will feed

through gap in

cam.

Image shown without handles for clarity.

6. Remove both disc springs, the wave spring (25 mm and 38

mm bore only), the gland bushing, and both gland bolts.

7. Remove the bolted gland.

8. Remove the ange bolts.

9. Remove the ange with the seat. Tap with a rubber mallet if it

is difcult to remove. Remove the body seal and seat with a

plastic pic.

10. Remove the ball and second seat with a plastic pic.

11. Remove both of the springs (50 mm bore only).

12. Push the stem down through the stem seal.

13. Remove the re seal and seal retainer with a plastic pic.

NOTICE

Be careful not to scratch the critical sealing surfaces.

Leakage could result.

14. Remove the stem through the body bore.

15. Remove the slip ring from the stem.

16. Remove the stem seal from the body with a plastic pic.

•WARNING

Before removing valve from system, to avoid

personal injury, you must

• Depressurize the valve

• Cycle the valve

• Purge the valve to remove any residual system

media left in the valve

Disassembly

1. Clamp the valve body vertically in a vise.

NOTICE

Be careful not to scratch the critical sealing surfaces.

Leakage could result.

2. Close the valve against the handle stop.

3. Document on the body the handle orientation relative to

the body, using a marker, for proper reassembly.

4. Remove the hex head screw and the washer.

5. Remove the handle and cam (locking cam version only).

Refer to Step 44 of Reassembly when replacing handle

only.

NOTICE

Note the location and orientation of each cam for

proper reassembly. They will lock into each other when

reassembled. The handle will not function properly if

assembled incorrectly.

Slip ring

Washer

Hex head

screw

Disc spring

Wave spring

Gland bushing Gland bolts

Ball

Seat

Body seal

Handle

Flange

Reassembly

1. Clean the valve, components, and all critical sealing

surfaces.

NOTICE

Do not use abrasive cleaners on critical sealing

surfaces. Leakage could result.

2. Secure the valve body vertically in a vise.

3. Apply a light coat of P-80 to the back of the seat. Assemble

the seat into body, concave face up.

4. Assemble the slip ring onto the stem with the spiral groove

facing up.

5. Apply a heavy coat of Molykote G-Rapid Plus on the lower

stem neck above the slip ring.

6. Assemble the stem through the body into the stem bore.

7. Assemble the spring into the bottom of the stem

(50 mm bore only).

8. Assemble the spring into bottom of the ball

(50 mm bore only).

9. Orient the ball slot with the stem tab.

10. Push the lower spring into the ball while pivoting the ball to

engage the stem spring (50 mm bore only).

11. Assemble the ball into body and engage with the stem.

NOTICE

Ensure the ball does not fall into the body or the ball

could be scratched. Leakage could result.

12. Ensure both springs are seated in the spring pockets

(50 mm bore only).

13. Apply a light coat of P-80 on back of the seat.

14. Assemble the seat into the ange, concave face up.

15. Assemble the body seal into the body.

16. Clamp the valve body in a vise.

17. Assemble the ange into the body.

NOTICE

Take care not to pinch the body seal. Leakage could

result from the graphite seal. Ensure the seat remains

seated in the ange before torquing to prevent

damage to the seat.

18. Apply a heavy coat of Molykote 1000 to the rst half of the

ange bolt threads.

19. Assemble the ange bolts and nger-tighten.

20. Set the ball to a fully open position using the unassembled

handle.

21. Remove the unassembled handle.

22. Torque the ange bolts to 1200 in∙lb (135 N∙m) in an

alternating pattern of 200 in∙lb (22.6 N∙m) increments.

Lube

Seat

Slip ring

Lube

Ball

Stem tab

Seat

Flange bolt

Stem

Concave up

31. Apply a light coat of Molykote G-Rapid Plus to the ID of the

seal retainer.

32. Assemble the seal retainer over the stem with the

shoulder facing down.

33. Assemble the re seal onto the stem.

34. Orient the stem to the closed position using the

unassembled handle.

35. Remove the unassembled handle.

36. Assemble the bolted gland.

37. Apply a heavy coat of permanent thread-locking uid to

rst half of the threads on the gland bolts.

38. Assemble the gland bolts into the bolted gland.

39. Torque the gland bolts 60 to 120 in∙lb (6.8 to 13.6 N∙m) in

alternating 1/4 turns. Ensure the bolted gland sits level on

the valve.

NOTICE

Gap between bolted gland and valve must be even.

Distance of the bolted gland corners must not vary

more than 0.04 inch from each other. Failure to

maintain the correct distance could result in increased

torque.

40. Apply a light coat of Molykote G-Rapid Plus to the ID of the

bolted gland.

41. Assemble the gland bushing over the stem.

42. Assemble the wave spring over the stem

(25 mm and 38 mm bore only).

23. Apply a heavy coat of Molykote 111 in the gap between the

stem and body.

24. Assemble the stem seals using the stem seal assembly

tools.

a. Thread the ID guide onto the stem and finger-tighten.

b. Insert the OD guide over the ID guide into the stem

pocket.

c. Apply a light coat of Molykote 111 to the OD and ID of

the stem seal.

d. Assemble the stem seal onto the ID guide spring side

(metal side) down.

e. While pressing the OD guide down, press the stem seal

completely into place with the pusher.

f. Remove the stem insertion tools.

Seal retainer

Thread-locking uid

Lube

Seal retainer

Gland bolt

Handle

*Pusher

Stem seal

*ID guide

Stem

*OD guide

*Stem seal insertion tools

Body

Stem

43. Assemble the disc springs one concave up and then one

concave down.

44. Assemble the handle sleeve on the handle. Apply P-80 if

difcult to assemble.

45. Assemble the proper cam (from Disassembly step #5)

and handle onto the stem oriented with the mark (from

Disassembly step #3).

NOTICE

Ensure the valve is in the closed position.

Leakage could result.

46. Ensure the cam is in the correct location and orientation

(from Disassembly Step #5) ‐ locking cam version only.

47. Assemble the washer.

48. Apply a heavy coat of permanent thread-locking uid to the

rst half of the hex head screw.

49. Assemble the hex head screw.

50. Torque the hex head screw to 120 to 180 in∙lb

(13.6 to 20.3 N∙m).

51. Open and close the valve several times to inspect for

smooth actuation.

52. Test each valve for proper operation and leak-tight integrity.

NOTICE

Allow thread-locking uid 24 hours to cure before

installing the valve. Failure to do so could result in

leakage.

Taller handle will

feed through gap

in cam.

Image shown without handles for clarity.

Permanent thread-locking uid

For additional information, see www.swagelok.com.

Swagelok — TM Swagelok Company

Molykote — TM Dow Corning Corporation

Molykote is a registered trademark of Dow Corning Corporation,

a wholly owned subsidiary of the Dow Chemical Company.

P-80 — TM International Product Corporation

MS-CRD-0255, Rev-, August 2019

Disc springs

Hex head screw

Concave up

Concave down

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