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VB03 Series Process Interface Valve
Maintenance Instructions
Carefully read entire instruction before servicing valve.
Kit Contents (contents may vary by kit)
Stem seal
Gland bolt (2)
Washer
Symbols
Discard
Seal retainer
Slip ring
Hex head screw
Spring (50 mm) (2)
Fire seal
Gland bushing
Seat (2)
Stem
Handle sleeve
Wave spring
(25 mm and 38 mm)
Body seal
Handle
(type may vary)
Disc spring (2)
Ball
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Table of Contents
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Summary of Contents for Swagelok VB03 Series
- Page 1 VB03 Series Process Interface Valve Maintenance Instructions Carefully read entire instruction before servicing valve. Kit Contents (contents may vary by kit) Disc spring (2) Fire seal Gland bushing Seal retainer Wave spring Stem seal (25 mm and 38 mm) Ball...
- Page 2 Tools Required Tool Size Component Vise — Valve body Open-ended wrench/socket Bore Size Hex head screw Gland Bolts Flange Bolts 25 mm 13 mm 6 mm hex 14 mm hex Hex head screw, gland bolts, and flange bolts 38 mm 13 mm 6 mm hex 14 mm hex...
- Page 3 Exploded View Available Kits: Handle sleeve Hex head screw Handle Kit: handle sleeve, hex head screw, washer and handle Washer Seat Kit: ball, body seal, seats, and springs (50 mm only) Stem Kit: disc springs, wave spring (locking cam version) (25 mm and 38 mm only), gland bushing, fire seal, seal retainer, Handle...
- Page 4 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 Stem seal Stem Flange...
- Page 5 • WARNING 6. Remove both disc springs, the wave spring (25 mm and 38 mm bore only), the gland bushing, and both gland bolts. Before removing valve from system, to avoid personal injury, you must Disc spring • Depressurize the valve •...
- Page 6 Reassembly 10. Push the lower spring into the ball while pivoting the ball to engage the stem spring (50 mm bore only). 1. Clean the valve, components, and all critical sealing 11. Assemble the ball into body and engage with the stem. surfaces.
- Page 7 23. Apply a heavy coat of Molykote 111 in the gap between the 31. Apply a light coat of Molykote G-Rapid Plus to the ID of the stem and body. seal retainer. 32. Assemble the seal retainer over the stem with the Lube shoulder facing down.
- Page 8 Taller handle will feed through gap in cam. Image shown without handles for clarity. 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.
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