Flowserve CPM Series - Manual (Page 9)

9
3.3 For dual seal un-pressurized operation, supply a clean
compatible buffer fluid to the inlet port at a pressure below the
stuffing box pressure. See Figure 9. Consult your Flowserve Sales
and Service Representative for assistance. Flowserve can supply
information on buffer fluid flow requirements based on seal size,
product temperature, barrier fluid characteristics, and shaft speed.
3.4 The Flowserve Supply Tank is designed to work with the CPM
PP seal to form a self-contained sealing system. The circulating
feature in the CPM PP seal 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 CPM PP seal in both the dual pressurized or dual
unpressurized operating modes.
Dual CPM PP Pressurized with Supply Tank Figure 8
4 feet (1.2 m)
maximum
1 foot
(30 cm)
minimum
Supply Tank
Assembly with
Cooling Coils
Pressure
Source