Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1997-03-28
2000-11-07
Walton, George L.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
137206, 137209, 137241, 141 67, 141 90, 141 91, 141129, 141167, 141172, 141198, 222 64, 222148, 222399, 134 981, 1341021, 1341022, 134166C, 134171, B08B 9027, B67C 322, B65B 3106, B65B 5518
Patent
active
061421693
ABSTRACT:
A gas supply system connected to vent a tank of a product filling system is set forth. The gas supply system comprises a high pressure/low pressure gas supply having a common outlet. The high pressure/low pressure gas supply is operable in a first mode of operation in which high pressure gas is supplied at the common outlet and a second mode of operation in which low pressure gas is supplied at the common outlet. A sterile filter having an inlet and an outlet is also provided. A steam supply system is disposed in-line between the common outlet of the high pressure/low pressure gas supply and the sterile filter. A tank valve system is provided having an inlet in fluid communication with the outlet of the sterile filter. The tank valve system also has first and second outlets and is operable in a first mode of operation in which the inlet is placed in fluid communication with the first outlet and a second mode of operation in which the inlet is placed in fluid communication with the second outlet. A product tank having a vent in fluid communication with the second outlet of the tank valve system is also provided. The product tank is used to provide a supply of product for use in the fill system when the fill system is in a production cycle of operation. The gas supply system is operable in an autoclaving mode of operation in which steam is supplied by the steam supply system and in which the high pressure/low pressure gas supply and the tank valve system are operated in their respective first modes of operation to autoclave the sterile filter. The gas supply system is also operable in a production mode of operation in which the high pressure/low pressure gas supply and the tank valve system are operated in their respective second modes to thereby vent the product tank.
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Buesing Jonathan P.
Lees John N.
Tetra Laval Holdings & Finance SA
Walton George L.
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