0781-0098 - Victor SR261C-510 Medium Duty LP Gas Regulator CGA 510

Technical Overview of the Victor SR261C-510 Regulator

The Victor SR261C-510 (SKU: 0781-0098) is a medium-duty, single-stage regulator engineered specifically for LP Gas (Propane) applications. Part of the renowned SR 250 Series, this regulator is designed to provide reliable pressure control in industrial environments. The unit features a robust die-forged brass body and housing cap, ensuring high resistance to wear and mechanical stress. The internal architecture utilizes a stem-type seat mechanism which aids in positive sealing and longevity.

Performance is managed through a 1-3/4 inch (1.75") diaphragm made from fabric-reinforced neoprene. This material choice offers an optimal balance between sensitivity and durability, allowing the regulator to maintain a delivery range of 4-80 PSIG with precision. The regulator is rated for a maximum inlet pressure of 350 PSIG, making it suitable for standard LP gas cylinders equipped with CGA 510 connections. The flow coefficient (Cv) is 0.109, accommodating medium to high capacity flow requirements typical in cutting and heating operations.

Critical components include a sintered inlet filter made from electroless nickel-plated bronze, which prevents particulate matter from entering the regulator seat assembly. The adjustment mechanism is enhanced with a Delrin insert bushing and a stainless steel ball in the key, reducing friction and allowing for smooth, precise pressure settings. Safety features include an external self-reseating relief valve, although the design is inherently stable for low-pressure fuel gas service. The unit is equipped with two 2-inch brass gauges: an inlet gauge reading up to 400 PSIG and an outlet gauge reading up to 100 PSIG, providing clear visual confirmation of system pressures.