PRODUCTS 
Multi-Purpose 
Emerson offers a broad range of versatile TESCOM™ multi-purpose regulators that operate in a variety of process / specialty gas and liquid applications.
26-1000 SeriesCv = less than 0.3
A broad categorization of “low flow” pressure regulators. For gases, this coefficient is defined as the flow of air at standard conditions in standard cubic feet per minute (SCFM) for each PSIG inlet pressure.
20-1000 SeriesCv = 0.3 - 0.69
A broad categorization of “medium flow” pressure regulators. For gases, this coefficient is defined as the flow of air at standard conditions in standard cubic feet per minute (SCFM) for each PSIG inlet pressure.
44-3200 SeriesCv = 0.7 and higher
A broad categorization of “high flow” pressure regulators. For gases, this coefficient is defined as the flow of air at standard conditions in standard cubic feet per minute (SCFM) for each PSIG inlet pressure.
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50-200 Series
Coriolis measurement - How does it work?