Catalog excerpts
CONTROL CHARACTERISTIC The normal control characteristics for all trim sizesgives a linear relationship between valve lift and flow rate.For Trim sizes A-J,an alternative characteristic is available:this is the Equal Percentage Trim,where equal increments of valve lift produce constant percentage increments of flow through the range. The graph shows this characteristic,where Equal Percentage trims have double the original flow for a 15% linear opening of the valve. > To properly specify the process conditions andcontrol requirements for an M Valve application, please supply the following...
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1/4Քor 1/2proportional control The M Valve is a miniature air operated proportional control valve for use on liquids,gases or steam. Available for 1/4Ԕand 1/2line sizes,a wide range of inner valve trims offer flow control with CV values from 3.0 down to 0.00008.Each valve has a control range of as much as 40:1 and with interchangeable trims the M Valve is ideal for pilot plant control, representing a scaled down version of larger process control valves.With linear,equal percentage and quick openingcontrol characteristics,the M Valve also has specific application in dosing,sampling and...
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