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320-69220000 - Miller Smith 320 Series High Purity Stainless Steel Two-Stage Regulator CGA 330

Packaging: 1 per ea
$3,479.62/ea $2,105.62/1 per ea only $2,105.62/eaSave 39%

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OVERVIEW

Miller Smith 320 Series: The Gold Standard in Stainless Steel Regulators

For professional welders, fabricators, and lab technicians who demand the absolute best in gas regulation equipment, the Miller Smith 320 Series represents the pinnacle of performance and reliability. This High Purity Corrosion Resistant Stainless Steel Two-Stage Regulator is designed to tackle the toughest jobs where precision and durability are non-negotiable. Whether you are managing shielding gases for critical welding applications or controlling flow for laboratory instrumentation, this regulator delivers unwavering performance. The 320-69-22-00-00 model is specifically configured with a CGA 330 connection and a low-pressure delivery range of 0-25 PSI, making it perfect for fine-tuning gas flow in sensitive environments.

The build quality of the Miller 320 Series is immediately apparent. It features a 316 stainless steel body and a convoluted stainless steel diaphragm. Unlike rubber or neoprene diaphragms that can degrade or off-gas over time, the stainless steel diaphragm provides a non-contaminating, leak-tight seal that reacts instantly to pressure changes. This metal-to-metal seal technology ensures that the regulator maintains its integrity even under harsh conditions. The two-stage design is a significant upgrade over single-stage alternatives, offering "set it and forget it" convenience; you won't need to constantly adjust the regulator as your tank pressure drops.

Miller has also prioritized usability and safety in this design. The large 2-1/2 inch gauges are easy to read at a glance, reducing the chance of reading errors. For installations requiring a clean, organized setup, the regulator includes threaded front and rear bonnets, allowing for seamless panel mounting. Additionally, the captured vent ports provide a critical safety layer, enabling the safe diversion of gases if a fault occurs. Backed by Miller's reputation for quality, this regulator is an investment in safety, precision, and long-term reliability.

Why Choose the Miller 320 Series?

  • Unmatched Durability: Stainless steel construction resists corrosion and wear in tough industrial environments.
  • Precision Control: Convoluted diaphragm and two-stage reduction provide ultra-stable pressure control.
  • High Visibility: Large, clear gauges make monitoring system status simple and accurate.
  • Trusted Brand: Rely on Miller's True Blue warranty and engineering excellence.
Additional Information
Brand:Miller
Packaging Description:1 Per Ea
Stage Type:Two Stage
Material:316 Stainless Steel
Inlet Connection:CGA 330
Delivery Pressure Range:0-25 PSIG
Max Inlet Pressure:3500 PSIG
Diaphragm Type:Convoluted Stainless Steel
Gauge Size:2-1/2 Inch
Gas Service:Corrosive, High Purity, Specialty Gas

INCLUDED

  • Miller Smith 320 Series Two-Stage Regulator (320-69-22-00-00)
  • Integrated 2-1/2" Inlet Pressure Gauge
  • Integrated 2-1/2" Delivery Pressure Gauge
  • CGA 330 Stainless Steel Inlet Connection
  • Owner's Manual

APPLICATIONS

  • Analytical Instrumentation
  • Petrochemical and Chemical Processing
  • Semiconductor Manufacturing
  • Pharmaceutical Production
  • Emission Monitoring Systems
  • Research and Development Laboratories
  • Corrosive Gas Handling
  • High Purity Shielding Gas Delivery

FAQ

A two-stage regulator reduces the cylinder pressure in two steps, which provides a constant delivery pressure regardless of fluctuations in the inlet pressure as the cylinder empties. This eliminates the need for frequent readjustment.

CGA 330 is a standard connection for corrosive gases. Common examples include Hydrogen Sulfide, Carbonyl Sulfide, and certain mixtures requiring stainless steel components.

316 stainless steel offers superior resistance to corrosion and chemical attack 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 features threaded front and rear bonnets specifically designed to facilitate front panel mounting for organized and secure installation.

The captured vent ports (1/16" FNPT) allow you to connect tubing to the regulator bonnet. In the event of a diaphragm failure, hazardous gases can be safely vented away to a scrubber or exhaust system rather than leaking into the immediate workspace.

Yes, the design is capable of withstanding internal vacuums. This is critical for purging operations where the system is evacuated to remove impurities before introducing the process gas.

The maximum inlet pressure for this regulator is 3500 PSIG, making it suitable for high-pressure cylinders.

While the regulator itself functions without one, the manufacturer notes that a Cross Purge Assembly must be used with this series to ensure effective purging of hazardous gas traces during cylinder changes.