0781-1448 - Victor SR4J-580 Heavy Duty Piston Regulator, 3000 PSIG Delivery

Victor SR4J-580 High Pressure Inert Gas Regulator

The Victor SR4J-580 (0781-1448) is a premium heavy-duty regulator engineered specifically for high-pressure applications involving inert gases such as Nitrogen, Argon, and Helium. Unlike standard regulators that utilize a diaphragm, the SR4J series employs a robust brass piston actuation mechanism. This design choice significantly enhances the unit's durability and reliability when handling high delivery pressures, making it the industry standard for rigorous industrial tasks.

Constructed with a machined brass body and housing cap, this regulator is built to withstand the harshest work environments. It features a cartridge-type seat assembly with a PCTFE seat, ensuring a tight seal and long service life even under frequent high-pressure cycling. The inclusion of a sintered bronze inlet filter prevents particulate contamination, further extending the lifespan of the internal components. For operational precision, the regulator includes a Delrin cap bushing that facilitates smooth and accurate pressure adjustments.

The SR4J-580 is capable of a substantial delivery pressure range of 200 to 3000 PSIG, supplied via a standard CGA 580 inlet connection. The outlet is outfitted with a 1/4-inch Swagelok female fitting (including a 1/4-inch stainless tube fitting), providing a secure and leak-proof connection essential for high-pressure lines. This configuration is specifically tailored for specialized applications such as pressure vessel testing and dead-end testing, where maintaining high static pressure is critical.

Safety and monitoring are addressed with large 2.5-inch brass gauges that provide clear visibility of cylinder and delivery pressures. While designed for heavy workloads, the unit remains compact enough for versatile deployment in various industrial settings, from structural steel fabrication to general maintenance and repair.