Flowserve Uniseal Series BW Seals - Manual (Page 2)

2
Description
The Uniseal metal bellows seal series consists of:
Uniseal I - Single seals for standard bore seal chambers
Uniseal I Plus - Single seals for enlarged bore seal chambers
Uniseal II - Dual seal for standard bore seal chambers
Uniseal II Plus - Dual seal for enlarged bore seal chambers
1 Equipment Check
1.1 Follow plant safety regulations prior to equipment disassembly
including, but not limited to, the following:
• Lock out motor and valves.
• Wear designated personal safety equipment.
• Relieve any pressure in the system.
• Consult plant MSDS files for hazardous material regulations.
1.2 Disassemble pump in accordance with equipment manufacturer’s
instructions and remove sealing arrangement.
1.3 Check seal documentation for seal design and materials of construction.
Verify that the Uniseal is designed for the equipment being repaired.
1.4 Check seal assembly drawing for any modifications required to the
equipment before installation and act accordingly.
1.5 Check shaft or pump sleeve OD, seal chamber depth, seal chamber
bore, distance to the first obstruction, gland pilot and gland bolting
to ensure they are dimensionally within the tolerances shown on the seal
assembly drawing. Check gland bolt length to ensure adequate thread
engagement for the actual seal gland.
1.6 Thoroughly inspect and clean the seal chamber and shaft or pump
sleeve. Inspect for corrosion or any defects. Remove all burrs, cuts, dents
or defects that might damage gaskets or allow a leak path. Replace worn
shaft or pump sleeve. Remove sharp edges from keyways and threads.
1.7 Check equipment requirements as described in Figure 1. Any reading
greater than what is allowed must be brought within specifications.
1.8 Handle the Uniseal with care; it is manufactured to precise tolerances.
The seal faces are of special importance and should be kept perfectly
clean at all times.
1.9 Tools needed for installation: An open-end wrench and torque wrench
sized for the gland bolt nuts; a torque wrench for the set screws. All other
tools are provided.
The images of parts shown in these instructions may differ visually from the actual
parts due to manufacturing processes that do not affect the part function or quality.