INSTALLATION
CB9A-005 page 10/28
SEAL (PACKING) ARRANGEMENTS
Single, Double and Triple Seal models are available to
provide a wide range of leakage control/containment
options. Before starting work on the compressor, note
the seal orientation indicated by the 6th digit of the
Compressor ID # shown on the compressor's nameplate.
Improper seal installation could release
explosive gas to the atmosphere
creating an explosion hazard, possibly
causing severe personal injury or death.
Hazardous gases
can cause property
damage, personal
injury or death
Also note any tubing connections in the seal area. 1/4"
NPT ports are provided between each pair of seals to
allow proper venting or pressurization of the seal areas
(double and triple seal models only). For more
information, see CB-037 "Compressor Distance Piece
Options".
Fig. 5 - SEAL ORIENTATION -
SINGLE SEAL COMPRESSORS
Fig. 6 – Typical Seal Area Construction
Fig.
7 - Seal orientation -double seal models
Table 4 - SEAL ARRANGEMENTS - ALL DOUBLE SEAL COMPRESSORS
Type
1
2
3
Inlet
Pressure
Atmospheric Pressure or above
Vacuum to 25 psia
Service
General Gas
Transfer
Toxic, Flammable or otherwise Hazardous Gases
General Gas
Transfer
Special
Upper
Distance
Piece
Connections
Plugged
Purge with Inert gas below
suction pressure and above
atmospheric pressure, or
Vent to a safe location
Pressurize, or
Purge with an Inert gas above
suction pressure and above
atmospheric pressure
Connect to:
1st-Stage
Discharge
Lower
Install drain valve. Drain accumulated condensate or oil weekly.
Ref. Notes:
a
b
a
c
NOTES:
a. Standard Configuration - use when no purge gas is available, or when mixing of the purge gas with the product stream
is not desirable.
b. Use when no external product leakage is desirable.
Note: Mixing of inert pressurization gas and the product stream is likely to occur.
c.
Consult Factory.
