PDGS0 pages

Mechanical Seals
Compressor Seals · Gas-lubricated Seals
PDGS
Features
Gas-lubricated
Uni-directional or bi-directional
Elastomer-free
Ready-to-fit cartridge unit
Single, double, tandem seal and tandem with
intermediate labyrinth available
Advantages
High quality components make this a universal
seal for a wide range of applications and the
ideal solution for standardization. The universal
gas seal for centrifugal compressors; resistant
to chemicals.
Application single seal: The simplest seal is a
Dry Gas Seal in single arrangement. This seal
is used in case that due to the nature of the
product gas no additional back up seal is
required. Separation seals as labyrinths, radial
clearance seals or CobaSeal are optionally
available. This version is used as an emissionfree arrangement with a corresponding flare/
vent connection. Primary leakage is then
discharged with the separating gas to the
primary vent (flare). In the case of dirty gases
the gas to be sealed has to be filtered in
addition and conveyed to the seal chamber via
connection "A". The resulting gas flow from the
sealing compartment prevents any dirty/wet
gas gas entering the seal.
Item Description
1 Seal face, stationary
2 Seat, rotating
3 Thrust ring
4 Spring
5 Shaft sleeve and seat retainer
6 Intermediate sleeve
7 Housing (adapted in size to the installation space)
8 Housing (adapted in size to the installation space)
9 Carbon ring type separation seal
10 Labyrinth
11 Intermediate labyrinth
A Product flushing
B Flare
C Buffer gas
D Separating gas
S Vent
15.09.2012 (c) EagleBurgmann
EagleBurgmann Germany
GmbH & Co. KG
Äußere Sauerlacher Straße 6-10
82515 Wolfratshausen /Germany
Phone +49 (8171) 23-0
Fax +49 (8171) 23-1214
info@eagleburgmann.com
www.eagleburgmann.com
All technical specifications are based on extensive tests and our many years of
experience. The diversity of possible applications means, however, that they can serve
only as guide values. We must be notified of the exact conditions of application
before we can provide any guarantee for a specific case. Subject to change.