Page 203 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

176 Applied Process Design for Chemical and Petrochemical Plants

TANK
(1.5-2 GPM/ 25 GALLON
PROCESS (LOW MINERAL
PUMP SEAL HOUSING PUMP) OR OTHER
ACCEPTABLE LOW
-
VISCOSITY OIL)
Figure 3-31A. Typical seal flush arrangement for double mechanical seals.

PLANT VENT
HEADERSYS

T FLUSH GLAs?n
'IGHT
'2 SEAL OIL SUPPLY TANK
2-3
GAL.
CAPACITY
DISCHARGE
PIPE FROM
PUMP

PUMPING RING IN SEAL

PUMP END DRIVE END
T- LOW PRESSURE SEAL (OUTSIDE)

lNSIBE SEAL/ PUMP SEAL HOUSING
Figure 3-31B. Typical seal flush arrangement for tandem mechanical seals.