0797-0306 - Victor High Pressure Seat Assembly for SR Series Regulators

Genuine Victor 0797-0306 High Pressure Seat Assembly

Maintain the integrity of your gas control equipment with the Victor 0797-0306 Seat Assembly. This is a genuine OEM replacement part manufactured by Victor Technologies (ESAB), designed specifically for the repair and maintenance of their heavy-duty industrial regulators. The seat assembly is arguably the most vital internal component of a regulator, responsible for holding back cylinder pressure that can exceed 2,000 PSI. When this part wears out, your regulator cannot function safely.

Technical Specifications and Compatibility

The 0797-0306 is a high-pressure seat assembly. It is engineered to fit several of Victor's most popular heavy-duty regulators, including the SR 450, SR 460, and SR 700 series. These regulators are workhorses in the industry, often used for high-flow applications. The assembly features a precision-machined brass body housing a specialized elastomeric seat material that provides a bubble-tight seal against the regulator nozzle. Its construction ensures compatibility with oxygen, acetylene, and other industrial gases typically used with these regulator models.

Diagnosing Regulator Seat Failure

Professional welders and MRO technicians know that a failing seat presents specific symptoms. The primary indicator is "creep" or "crawling." When you close your torch valve and back off the adjusting screw, if the low-pressure gauge needle continues to climb, your seat is leaking. This happens because the seat surface has become indented, cracked, or contaminated with debris, preventing a complete seal. Replacing the seat with the 0797-0306 is the standard repair procedure to fix this condition and prevent potential diaphragm rupture or safety valve activation.

Installation and Maintenance

Replacing the seat assembly is a straightforward process for experienced technicians. It involves disassembling the regulator body, removing the old seat, and ensuring the internal nozzle surface is clean and undamaged before installing the new 0797-0306. Cleanliness is paramount during this repair; even microscopic dust can damage the new seat instantly. By using this genuine Victor part, you ensure the correct spring tension and seating depth, returning your regulator to factory specifications.