188428 ⎘
Ratio control; Controlling ratio of two or more flows of fluid or fluent material with auxiliary non-electric power
Sub-classes:Semi-closed circuit underwater breathing apparatus ratio regulator
#2GAS DILUTION SYSTEM
#3GRADIENT SOLUTION SENDING APPARATUS
#4Pressure balance unit
#5Mixing Head For Reaction Injection Molded Materials
#6GAS MIXING PUMP WITH VARIABLE INJECTION SECTION
#7Gradient solution sending apparatus
#8Apparatus and method of increasing the mass transfer of a treatment substance into a liquid