Canadian owned and operated
Every welder who uses CO2 for shielding gas knows the frustration of regulator freeze-up. When you are running high flow rates for core wire applications or heavy fabrication, the rapid expansion of CO2 causes temperatures to drop drastically, often turning your regulator into a block of ice and cutting off your gas flow. The Victor SR311 CO2 Regulator/Flowmeter is the solution to this common problem. It is built differently from the ground up to handle the specific demands of carbon dioxide.
The secret lies in its heavy-duty machined aluminum body, which features large heat sink fins. These fins act just like the cooling fins on an engine, but in reverse—they pull warmth from the surrounding air into the regulator body to counteract the freezing cold of the gas. This allows you to maintain high flow rates (up to 100 SCFH) continuously without needing an expensive or cumbersome electric heater. You get consistent gas coverage, fewer interruptions, and better weld quality.
Built for the Shop
This regulator is tough. The aluminum housing cap and body are designed to withstand the rigors of daily shop use. It features a large, easy-to-read 2-inch gauge so you can check your flow at a glance. The preset 80 PSIG outlet pressure ensures that your flowmeter stays accurate, while the fabric-reinforced diaphragm provides smooth response. Whether you are setting up a new MIG station or replacing a freezing regulator, the SR311 is the reliable choice for pure CO2 shielding gas.
| Additional Information |
|---|
| Brand:Victor |
| CGA Fitting:CGA 320 |
| Item:Flow Regulator |
| Used On Which Gas:CO2 |
| Max Inlet:1500 PSI |
| Max Outlet:80 PSI |
| Gas Type:Carbon Dioxide (CO2) |
| Flow Range:25 - 100 SCFH |
| Body Material:Machined Aluminum |
| Diaphragm Size:1.75 inch |
| Outlet Connection:5/8" - 18 RH (F) (CGA 032) |
| Pressure Relief:Self-reseating relief valve |
| Packaging Description:pack of 1 |
| Used On Which Gas?:CO2 |
