311-70220000 - Miller Smith 310 Series Silverline Stainless Steel Regulator CGA 330

High Purity Regulation for Corrosive Environments

The Miller Smith 311-70-22-00-00 Silverline High Purity Regulator is a premium solution designed specifically for the rigorous demands of specialty gas delivery. Engineered to prevent contamination in high-purity systems, this single-stage regulator is constructed from 316 stainless steel bar stock, ensuring exceptional durability and resistance to corrosion. It is particularly well-suited for applications involving corrosive, non-corrosive, or toxic gases where maintaining the integrity of the gas stream is paramount. The unit features a CGA 330 inlet connection, making it compatible with specific corrosive gas cylinders, and delivers a precise pressure range of 0-50 PSIG.

At the heart of this regulator is a specially designed convoluted stainless steel diaphragm. Unlike standard rubber diaphragms, this metal-to-metal seal provides maximum leak integrity and superior sensitivity to pressure changes, allowing for highly accurate delivery pressure regulation. The diaphragm's convoluted shape enhances its flexibility and response time, ensuring stable flow even under fluctuating inlet pressures. Furthermore, all wetted parts—components exposed to the gas stream—are manufactured from 316 PCTFE and stainless steel, providing a robust barrier against chemical attack and ensuring a long service life in harsh environments.

Safety is a critical component of the 310 Silverline series design. The regulator includes a captured vent port (1/16" FNPT) located in the bonnet. This feature allows operators to pipe vented gases away to a safe location in the unlikely event of a diaphragm failure, a crucial requirement when handling toxic or hazardous media. Additionally, the regulator is designed to withstand internal vacuum, making it suitable for purge cycles essential in high-purity applications. For installation flexibility, the bonnet is threaded for front panel mounting, and the body is tapped for rear panel mounting, allowing for seamless integration into gas cabinets or laboratory benches.

Key Features:

• 316 Stainless Steel Construction: Ensures corrosion resistance and gas purity.


• Precise Control: Convoluted stainless steel diaphragm for accurate pressure regulation.


• Safety First: Captured vent port for safe disposal of hazardous gases.


• Versatile Mounting: Options for both front and rear panel installation.