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Miller Smith 620 Series Silverline 2-Stage Regulator, CGA 346, 0-250 PSI Delivery

$1,151.97/ea $757.09/1 per ea only $757.09/eaSave 34%

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OVERVIEW

Reliable Two-Stage Control for Industrial Air

The Miller Smith 623-00-05-00-00 is a premium two-stage regulator from the 620 Silverline family, designed to deliver precise pressure control for non-corrosive gases. With a CGA 346 inlet connection and a delivery range of 0-250 PSI, this unit is perfectly suited for high-pressure air cylinders used in welding, fabrication, and maintenance operations. The primary advantage of this two-stage regulator is its ability to provide a constant delivery pressure regardless of fluctuations in the inlet pressure. As your cylinder drains from 3500 PSI down to empty, this regulator maintains your set output, preventing the "drift" common with single-stage alternatives.

Durability is built into every aspect of this device. The regulator body is crafted from nickel-plated brass bar stock, offering superior strength compared to forged bodies. The heart of the regulator is its unique stainless steel diaphragm, which provides excellent sensitivity and accuracy. This metal diaphragm also allows the regulator to withstand internal vacuums, making it suitable for purging operations without risk of damage. The 2-1/2 inch single scale gauge is easy to read, allowing operators to monitor pressure levels at a glance.

Miller Smith has designed this regulator with maintenance and safety in mind. It features a threaded front and rear bonnet for secure panel mounting if required. The inclusion of a capturable vent allows for the safe diversion of vented gases, adding an extra layer of protection for the operator. Additionally, the filtered seat design helps prevent debris from causing leaks or creep, ensuring that the regulator performs consistently over a long service life. For welders and industrial tradespeople requiring a high-purity, high-reliability regulator for air applications, the 623-00-05-00-00 is a top-tier choice.

Additional Information
Brand:Miller
Cga Fitting:CGA 346
Item:Regulator
Max Inlet:3500 PSI
Max Outlet:250 PSI
Used On Which Gas:Industrial Air
Series:620 Silverline
Stages:Two Stage
Diaphragm Material:Stainless Steel
Body Material:Nickel Plated Brass
Outlet Connection:1/4" FNPT
Filter Material:316 Stainless Steel
Packaging Description:1 per ea

INCLUDED

  • 1x Miller Smith 623-00-05-00-00 Silverline Regulator
  • 1x Owner's Manual

APPLICATIONS

  • Laboratory and analytical instrumentation
  • Gas chromatography
  • Laser gas regulation
  • Industrial air supply systems
  • Emission monitoring
  • Specialty gas delivery

FAQ

A two-stage regulator reduces the cylinder pressure in two steps, which allows it to maintain a constant delivery pressure even as the cylinder pressure drops. This eliminates the need for frequent adjustments as the tank empties.

The CGA 346 connection is typically used for compressed air (industrial or breathing) at pressures up to 3,000 PSI.

No, the Miller Smith 620 Silverline series is designed for non-corrosive gases. It features a brass body and stainless steel diaphragm suitable for inert and specialty gases but not corrosives.

This regulator is rated for a maximum inlet pressure of 3,500 PSI.

The stainless steel diaphragm prevents outgassing and absorption common with rubber diaphragms, ensuring higher gas purity and providing a metal-to-metal seal for better leak integrity.

It features a capturable vent in the bonnet (1/16" FNPT) which allows for venting. It is designed to allow safe piping away of gases in the event of a diaphragm failure.

This specific model (623-00-05-00-00) has a delivery pressure range of 0-250 PSI.
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