DEVICES FOR GAS FLOW CONTROL
All three types of regulators have their advantages. Use the comparison table to the left to select the type that best fits your application(s).
There are two basic types of flow control devices, generally referred to as "fixed pressure/variable orifice" and "variable pressure/fixed orifice". A typical flowmeter regulator is a "fixed pressure/variable orifice" device, pressure fixed at the factory to a "compensated" or "calibrated" pressure, depending on the flow range desired and the gases being used.
A third type of flow regulator is called a "zero" or "non-compensated" flowmeter regulator. It shares some features and advantages of both flow meter and flow gauge regulators. It uses a flowmeter as an indicator, but generally functions as a variable pressure flowgauge regulator.