System Seal Cooler Mounting Height; Interconnecting Pipes; Installation Procedure - Flowserve 682-53B System User Instructions

682-53B System

6.2.2 System seal cooler mounting height

The cooler must be positioned above the seal, unless
a circulation pump is utilized. This will encourage
thermosyphoning when the system is in standby mode
and help with proper venting. The cooler will be mounted
on the 53B stand based on pump centerline selection:
L (300 to 450 mm [11.8 to 17.7 in.]), M (451 to 600 mm
[17.7 to 23.6 in.]), H (601 to 750 mm [23.6 to 29.5 in.]).

6.2.3 Interconnecting pipes

The flow of barrier fluid through the system is either
generated by:
• A pumping device, included in the seal design
• An external circulating pump
• Thermosyphoning (hot standby)
The interconnecting pipes between the system and the
mechanical seal must be correctly fitted; otherwise the
flow of the barrier fluid through the system might be
restricted.
Pay particular attention to the following points:
• Minimize the number of restrictions (for example, limit
the number of fittings).
• The total length of connection piping between the
mechanical seal and 682- 53B shall not exceed 5 m
(16.4 ft) in length per API 682 8.2.5.
• Unless otherwise specified, the pipe size shall be 0.75
in. and schedule shall be the same as the system
piping (or as per specification).
SSIOM000742-00 (EN/AQ) November 2022
• The pipes must be clean and free of burrs.
• The total pipe length and number of bends shall be kept
to a minimum.
• Use smooth, large radius bends; do not use elbows,
tees, etc.
• Pipe runs should be sloped continuously up or down
to allow for adequate circulation, proper venting and
draining shall be maintained.
• Make sure that the loop, including seal flange, does not
include vapor traps.
Vapor traps will block circulation and overheating will
appear. When vapor traps cannot be avoided, a proper
venting solution shall be added.
• For threaded connections, do not use Teflon tape but
Engineering Loctite 577.
NOTE: If isolation valves are part of the interconnecting
piping, these valves shall be full bore and "locked open"
during operation.

6.3 Installation procedure

Use this procedure to install or reinstall the system.
Procedure
1. Before installing the system, inspect all components for
damage. If any of the components are damaged, it shall
be reported to the Flowserve representative.
2. Determine the installed position of the system. Refer to
the Installation requirements.
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