0740-0103 - Victor High Pressure Seat and Stem for SR 450/460 Regulators

Victor 0740-0103 High Pressure Seat & Stem Assembly

The Victor 0740-0103 is a critical replacement component designed for heavy-duty gas regulators. As a High Pressure (HP) Seat & Stem Assembly, it serves as the primary sealing mechanism within the high-pressure chamber of the regulator, controlling the flow of gas from the cylinder to the delivery side. This part is engineered to exacting tolerances by Victor Technologies to ensure safe and reliable operation under high inlet pressures.

This assembly is specifically compatible with Victor's professional and heavy-duty regulator series, including the SR 450, SR 460, and SR 700 models. These regulators are commonly found in industrial settings, scrap yards, and heavy fabrication shops where durability and precision are paramount. Over time, the seat material in a regulator can degrade due to wear, debris, or age, leading to "creep"—a condition where delivery pressure rises uncommanded when the torch valves are closed. Replacing the seat and stem assembly with this genuine OEM part is the standard procedure to rectify this hazardous condition.

The 0740-0103 assembly includes the precision-machined metal stem and the embedded sealing material, pre-assembled for straightforward installation by qualified technicians. By using genuine Victor parts, operators ensure that the material compatibility (oxygen cleanliness and chemical resistance) meets the original design specifications, maintaining the safety integrity of the gas equipment.