background image

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 fire 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 fluid to 

first 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.

7

Seal retainer

Thread-locking fluid

Lube

Seal retainer

Gland bolt

Handle

*Pusher

Stem seal

*ID guide

Stem

*OD guide

*Stem seal insertion tools

Body

Stem

Summary of Contents for VB03 Series

Page 1: ...vicing 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 B...

Page 2: ...ew 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 flan...

Page 3: ...s 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...

Page 4: ...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 4 B...

Page 5: ...al 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 med...

Page 6: ...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...

Page 7: ...ch 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 s...

Page 8: ...rque 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...

Reviews: