Stable Output at Low PSIs
The new Mountain High 109X series of Dual Stage (cascaded) high stability regulators allow the useful pressure of a cylinder to be spent down to about 10 psi above the regulating pressure. This will still yield the specified flow rate for the application while maintaining specified pressure and flow requirements.
The dual-stage regulators are ideal for performance-critical applications where pressure stability, repeatability and low drop out regulation of oxygen are important specifications as the supply runs down to nearly empty.
The graph on the right zooms-in on the details of the output performance of the regulator while the inlet pressure had dropped to the regulation point (unity) ~ 20 psig. of the final stage.