Flowserve 80 Series Five Star Seal - Manual (Page 8)

8
3 Piping
3.1 Taps b and c in the gland are buffer/barrier fluid inlet and
outlet ports. Use Figure 7 to determine which ports to use as inlet
and outlet.
3.2 For dual seal pressurized seal operation, supply a clean compat-
ible barrier fluid to the inlet port at a pressure at least 170 kPa
(25 psi) above the stuffing box pressure. See Figure 8. Flowserve
can supply information on barrier fluid flow requirements based on
seal size, product temperature, barrier fluid characteristics, and
shaft speed. Consult Flowserve, Flow Solutions for assistance.
Inlet Outlet
Clockwise (CW) Port c Port b
Counterclockwise (CCW) Port b Port c
CCW
Rotation
CW
Rotation
b
c
Note: Outlet port position should be located above Inlet
port for optimum operating performance