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320-70200000 - Miller Smith 320 Series High Purity Stainless Steel Two-Stage Regulator, CGA 320, 0-25 PSI

Packaging: 1 per ea
$2,920.18/ea $1,767.09/1 per ea only $1,767.09/eaSave 39%

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OVERVIEW

Miller Smith 320 Series: The Gold Standard in High Purity Regulation

Welders Supply is proud to offer the Miller Smith 320-70-20-00-00, a premium two-stage regulator designed for high-purity and corrosive gas applications. When precision cannot be compromised, this stainless steel regulator delivers consistent pressure control and exceptional durability. Equipped with a CGA 320 connection, it is optimized for use with Carbon Dioxide and other compatible gases where a clean, non-reactive flow path is required. With a delivery range of 0-25 PSI, it provides fine low-pressure control suitable for sensitive industrial and laboratory equipment.

Robust Stainless Steel Construction

Durability meets purity in the 320 Series. The regulator body is machined from 316 stainless steel bar stock, providing a rugged housing that withstands harsh industrial environments and corrosive media. Unlike brass regulators, this stainless steel unit prevents internal oxidation and contamination, ensuring that your process gas remains as pure as the source. The internal wetted parts, including the diaphragm and filtered seat, are also crafted from 316 stainless steel and PCTFE, ensuring broad chemical compatibility and long-term reliability.

Two-Stage Precision and Safety

The two-stage design of this regulator steps down cylinder pressure in two phases, resulting in an extremely stable outlet pressure that does not drift as the cylinder empties. This "decay-free" performance is essential for automated welding processes, laser cutting, and analytical testing where pressure spikes could ruin a workpiece or invalidate a test. Safety is paramount; the regulator features a captured vent port in the bonnet to safely divert gases if necessary, and the metal-to-metal diaphragm seal ensures the highest level of leak integrity available.

Key Operational Benefits

  • Stable Output: Two-stage reduction compensates for inlet pressure changes.
  • Vacuum Compatible: Designed to hold vacuum during purge operations without damage.
  • Easy Monitoring: Large 2.5-inch gauges provide clear readings of tank and delivery pressure.
  • Flexible Mounting: Threaded bonnets allow for secure panel mounting in gas cabinets or control boards.

Invest in the Miller Smith 320 Series for your critical gas delivery needs and experience the difference that professional-grade high-purity equipment makes.

Additional Information
Brand:Smith Equipment
Gas Service:Carbon Dioxide (CO2), Specialty Gas, Corrosive Gas
Material:316 Stainless Steel
Stages:Two Stage
Inlet Connection:CGA 320
Delivery Pressure Range:0-25 PSIG
Series:320 Silverline
Max Inlet Pressure:3500 PSIG
Diaphragm Material:Convoluted Stainless Steel
Seat Material:PCTFE
Port Size:1/4" FNPT
Gauge Size:2-1/2"
Packaging Description:1 per ea

INCLUDED

  • Miller Smith 320 Series Two-Stage Regulator
  • Owner's Manual

APPLICATIONS

  • Analytical Instrumentation
  • Gas Chromatography
  • Petrochemical Research
  • Laser Gas Systems
  • Emission Monitoring
  • Corrosive Gas Handling
  • Pharmaceutical Manufacturing
  • High Purity Welding Shield Gas

FAQ

A two-stage regulator reduces cylinder pressure in two steps, providing a constant delivery pressure even as the cylinder pressure drops. This eliminates the need for frequent manual adjustments.

CGA 320 is the standard connection for Carbon Dioxide (CO2). Since this regulator is stainless steel, it is suitable for high purity or corrosive applications involving CO2 or compatible mixtures.

316 Stainless Steel offers superior corrosion resistance compared to brass. It is essential for handling corrosive gases and maintaining high purity by preventing contamination from the regulator body itself.

Yes, the Miller Smith 320 Series is designed to withstand internal vacuums, which is critical during purging operations to remove atmospheric contaminants before introducing process gas.

This model (320-70-20-00-00) has a delivery pressure range of 0-25 PSIG, making it ideal for low-pressure applications requiring fine control.

It features a captured vent port in the bonnet (1/16" FNPT) which allows for safe venting of hazardous gases in the event of a diaphragm failure, rather than a standard atmospheric relief valve.

The maximum inlet pressure rating is 3500 PSIG.

For hazardous or toxic gases, a Cross Purge Assembly is highly recommended to ensure effective purging of gas traces during cylinder changes.