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                The FTA VALVE 
                is used to control final sample temperature to enhance the accuracy 
                of on-line instrumentation. The valve can be attached to a heat 
                transfer coil which is immersed in a bath, or it can be mounted 
                on to a new or existing sample cooler to enhance the coolerĄ¯s 
                performance. The FTA valve is able to react to changes in both 
                the sample temperature and the sample flow rate automatically. 
                Other forms of temperature control such as secondary coolers and 
                isothermal baths work on the approach temperature principle which 
                requires readjustment by the system user as conditions change. 
               
               
              
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