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321-00220000 - Miller Smith 320 Series Stainless Steel Two-Stage Regulator, CGA 330, 0-50 PSI

Packaging: 1 per ea
$2,696.51/ea $1,631.74/1 per ea only $1,631.74/eaSave 39%

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OVERVIEW

Reliable Precision for Corrosive Environments

When working with specialty gases, particularly those that are corrosive or require high purity, standard brass regulators simply cannot compete. The Miller Smith 320 Series Stainless Steel Two-Stage Regulator is the professional's choice for demanding applications. This model (321-00-22-00-00) is built to handle the toughest tasks with a robust 316 stainless steel body and internal components, ensuring that your equipment resists corrosion and maintains performance over time. Whether you are in a laboratory setting or a specialized industrial welding environment, this regulator provides the reliability you need.

The two-stage design is a critical feature for applications requiring constant pressure. Unlike single-stage regulators, which can allow delivery pressure to rise as the cylinder pressure falls (a phenomenon known as decaying inlet characteristic), this two-stage unit compensates for inlet fluctuations. This means you get a steady 0-50 PSI flow from start to finish, without constant manual adjustments. This stability is essential for maintaining process consistency and quality in sensitive operations.

Designed with user safety and operational efficiency in mind, the Miller Smith 320 Series features a captured vent port system. This allows for the safe diversion of hazardous fumes, protecting the operator and the workspace. The regulator is also equipped with clear, easy-to-read 2-1/2 inch gauges, so you can monitor tank and delivery pressure at a glance. Compatible with CGA 330 cylinders, this regulator is the definitive solution for safe, precise, and contamination-free gas control.

Additional Information
Brand:Miller
Packaging Description:1 Per Ea
Series:320 Silverline
Gas Service:Corrosive Gases, Non-Corrosive Gases, Specialty Gas
Stage Type:Two Stage
Inlet Connection:CGA 330
Outlet Connection:1/4" FNPT
Delivery Pressure Range:0-50 PSIG
Max Inlet Pressure:3500 PSIG
Body Material:316 Stainless Steel
Diaphragm Material:Stainless Steel
Seat Material:PCTFE

INCLUDED

  • 1 x Miller Smith 321-00-22-00-00 Two-Stage Regulator
  • 1 x Set of 2-1/2" Single Scale Gauges
  • 1 x Owner's Manual

APPLICATIONS

  • High purity gas delivery systems
  • Corrosive gas handling (e.g., Hydrogen Sulfide, Boron Trifluoride)
  • Laboratory research and analysis
  • Petrochemical processing
  • Semiconductor manufacturing
  • Specialty welding applications requiring high-grade shielding gases

FAQ

This regulator provides a delivery pressure range of 0-50 PSIG.

It features a CGA 330 stainless steel inlet connection, typically used for corrosive gases.

Yes, the 316 stainless steel construction and PCTFE seats make it highly resistant to corrosion and suitable for corrosive gas service.

A two-stage design provides constant delivery pressure regardless of fluctuations in the cylinder's inlet pressure, ensuring stable flow as the tank empties.

Yes, the front and rear bonnets are threaded to accommodate front panel mounting.

It features captured vent ports (1/16" FNPT) in the bonnet that allow hazardous gases to be piped away safely in the event of a failure.

The regulator is rated for a maximum inlet pressure of 3500 PSIG.

Wetted parts are constructed from 316 Stainless Steel and PCTFE for high purity and corrosion resistance.