Matheson Model 3040SV Single Stage High Purity, High Delivery Pressure SS Regulator
SEQ3040SV, CGA-346
A CGA fitting is the standardized system for the attachment of a compressed gas cylinder to the required regulator or transfer line. The three digit number, CGA (XXX), corresponds to specific gasses which that fitting is tailored for.
See CGA Connection Chart.pdf in the downloads section for specific gas types compatible with this Stainless Steel CGA-346 fitting.
Regulator Specifications
- Maximum Inlet Pressure: 3000 psig (20,700 kPa)
- Maximum Flow Rate: 4600 SCFH (2170 SLPM)(At 2500 psig, N2)
- Flow Capacity (Cv): 0.06
- Operating Temperature: -15°F to 165°F (-26°C to 74°C)
- Porting (Regulator Body): 1/4” NPT Female
- Porting Configuration: 2 High, 2 Low
- Delivery Pressure Range: 100-2500 PSIG
- Delivery Pressure Gauge: 0-3000 PSIG
- Cylinder Pressure Gauge: 0-3000 PSIG
This is a Matheson Single Stage 316 Stainless Steel regulator with a 1/4 inch MNPT outlet connection and 1/4 inch FNPT body porting. It comes equipped with 2 inch inlet and delivery pressure gauges, an outlet needle valve, Teflon & Viton seals and a Nickel plated brass bonnet.
This Matheson series 3040SV model 3040SV regulator is to be used in applications requiring delivery pressures up to 2500 PSIG and can accept a maximum inlet pressure of 3000 PSIG. This regulator is suitable for applications requiring the delivery of gas to manufacturing processes, charging of systems, and purging. This regulator's Viton and Teflon seals are good for most gasses including hydrogen chloride mixtures, however, if the application requires hydrogen sulfide a model using EPR and Vespel seals will be necessary
Single-Stage vs. Two-Stage
Both single-stage and two-stage regulators operate by reducing the pressure of gas supplied by a cylinder to an appropriate output level. The intake and delivery pressure ranges of regulators do not depend on how many stages they have, but by each regulators mechanical characteristics. When considering a single vs. a two-stage regulator there are two things to keep in mind: Droop and Supply Pressure Effect. Droop is the decrease in output pressure caused by an increase in flow rate. Supply Pressure Effect is simply the variation in delivery pressure from the cylinder to the regulator.
Single Stage regulators will experience less droop with varying flow rates but a large supply pressure effect and need to be monitored and adjusted by an operator or used in applications where supply pressure will remain constant. Two-Stage regulators inherently control for variations in supply pressure while producing a constant output and therefore can be used without an operator present and in applications which require a very specific delivery pressure. The specification sheet for this series of regulator can be found in the downloadable section as a .PDF.
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