Comparison between V-bar flow meters and orifice plate flow meters
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When the flow rate in the small-diameter pipes is low, for example below 30, which is better to use, an orifice plate or a V-port, considering only technical aspects?
GB2624-93 (I’ll take a look at the new standard tomorrow) applies only to throttle devices with a diameter greater than 50 mm; it seems that orifice plates with smaller diameters are not suitable, as the pressure loss is likely to be too high (just a guess): lol
Yes, I also want to learn about the principles and technology of orifice plates!
There are no standards for small-diameter orifice plates in China. Do you mean a V cone by V bar? I can tell you that as long as you don’t use a cantilever pressure tap, a V-cone is better than an orifice plate.
The pressure loss of a V-cone is lower than that of a orifice plate; metal floats can be considered for values below 30.