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Pressurized barrier fluid reservoir supplying clean fluid for an arrangement 3 pressurized dual seal.
A From mechanical seal
B To mechanical seal
C Filling connection
D Cooling water IN
E Cooling water OUT
F Drain
G From external pressure source
4 Flush (F)
5 Liquid barrier OUT (LBO)
6 Liquid barrier IN (LBI)
11 Seal chamber
Example seal: EagleBurgmann LY9DZTT dual pusher mechanical seal.
Key
1 From external pressure source
2 Reservoir
3 Make-up barrier liquid
7 Cooling water IN
8 Reservoir barrier fluid drain
9 Cooling water OUT
10 Barrier fluid drain
LI Level indicator
LIT Level transmitter with local indicator
PIT Pressure transmitter with local indicator
3CW-FB, 3CW-BB, 3CW-FF
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