0781-0355 - Victor SR310 High Capacity CO2 Regulator, CGA-320, 10-200 PSIG

Victor SR310 High Capacity CO2 Regulator Overview

The Victor SR310 Series (0781-0355) represents a specialized solution for industrial gas management, specifically tailored for Carbon Dioxide (CO2) applications. CO2 is unique in its tendency to cool rapidly upon expansion, often leading to regulator freeze-up and flow interruptions in standard brass regulators. The SR310 addresses this thermodynamic challenge through its material construction and physical design. Unlike traditional brass bodies, this regulator features a machined aluminum body and housing cap. Aluminum's superior thermal conductivity, combined with the regulator's distinctive heat sink fins, allows the unit to absorb ambient heat more efficiently, maintaining internal temperatures above the freezing point of the gas during high-flow operations.

Designed for durability and precision, the SR310 utilizes a stem-type seat mechanism and a large 1.75-inch (44.5 mm) diaphragm made from fabric-reinforced neoprene. This robust internal architecture ensures consistent delivery pressure even as the cylinder pressure fluctuates. The unit is rated for a maximum inlet pressure of 1500 PSIG, which is standard for CO2 cylinders, and connects via a CGA-320 nut and nipple. The inlet assembly includes a sintered bronze filter to trap particulate matter, protecting the seat assembly from damage and extending the service life of the equipment.

This model offers a substantial delivery range of 10 to 200 PSIG, making it a versatile tool for various industrial setups. While it is equipped with a self-reseating relief valve for safety, operators should note that this valve is designed to protect the regulator itself, not necessarily downstream equipment. For applications where backpressure exceeds 2 PSIG, it is recommended to use this regulator in conjunction with a flow meter to ensure accurate volumetric flow readings. The SR310 is an essential component for facilities requiring reliable, high-volume CO2 delivery without the constant maintenance associated with regulator icing.