Alfa Laval Corporate Ab

Alfa Laval Kolding A/s

Alfa Laval Flow Inc.

Roger James Ashton

Per Schneidereit

Christian Karl Thommen, Iii

Karl-Aage Lindholm Jensen

James Louis Larsen

A cleaning system for cleaning a valve seat, where the valve seat is formed of at least one gasket for sealing between a housing and a stem, preferably for a double seat valve and where at least one guide band is centering the stem in the housing, where the stem has a cut out, allowing a cleaning liquid to flush the seat, when the stem is in a cleaning position, and where the guide band is still centering the stem while in the cleaning position. By putting the stem into a cleaning position, the cut out in the stem is positioned in the area of the gasket and thereby allowing the cleaning liquid to pass the gasket and the guide band via a small gap between the guide band and the stem itself. This way the seat is flushed with cleaning liquid and is thereby cleaned.

Cleaning system for cleaning a valve seat

A system for continuous pasteurizing of liquid foods is provided which includes the ability to clean the pasteurizing system in place without the need for manual connection and disconnection of piping. The system includes a supply of liquid food product, a source of water, a heat exchanger section for heating the liquid food product, a balance tank for maintaining desired flow to the heat exchanger during fluctuations in demand, and at least one mixproof valve connected to the water source and liquid food supply for delivering one or the other, without risk of intermixing, upstream of the balance tank. The system also discloses the use of a mixproof valve for delivering clean in place solution to the balance tank while preventing the flow of liquid food into the clean in place solution source. A further mixproof valve may be provided downstream from the heat exchanger to permit use of clean in place liquid through the system without entering the pasteurized product delivery line, unless it is desired to do so. The system permits clean in place to take place throughout the system through employment of a clean in place vacuum breaker valve so that virtually the entire system may be cleaned without the need to disconnect and reconnect pipes and fittings.

High temperature/short time pasteurization system and method of cleaning

Growing community of inventors

Kenosha, WI, United States of America

Roger James Ashton