(under subclass 198) Meters having combined therewith means for regulating the pressure of the fluid to the inlet or the pressure drop across the meter; or means for indicating or limiting the demand (rate of flow, maximum or minimum) from the meter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
197, for regulators combined with compound meter structure.
SEE OR SEARCH CLASS
137, Fluid Handling,
494+, particularly subclasses 505+ for pressure regulators, per se, not structurally combined with meters.
