Flowserve ISC Series - Manual (Page 13)

13
4.4 The Flowserve Supply Tank is designed to work with the ISC Dual
Seal to form a self-contained sealing system. The new circulating
feature in the ISC provides a positive barrier fluid flow from the seal
cavity to the Supply Tank and back to the seal. In most cases the
natural cooling of the piping and tank are adequate to remove seal
generated heat. Cooling coils are available with the Supply Tank to
increase heat dissipation. The Supply Tank can be used with the
ISC dual seal in both the dual pressurized or dual unpressurized
operating modes.
Recommendation: For enhanced seal performance and reduced
coking, use DuraClear as a barrier fluid. Refer to DuraClear brochure
FSD123 or contact a Flowserve seal application engineer for further
details.
Tandem ISC with Supply Tank Figure 10
Bypass
Flush to
Gland
Flush Port
Supply Tank
Assembly with
Cooling Coils
1.2 m (4 feet)
maximum
0.45 - 0.6 m
(1.5 - 2 feet)
minimum
Orifice
Option
Vent to Vapor
Recovery