0781-1470 - Victor SR4K-680 High Pressure Inert Gas Piston Regulator, 300-4500 PSIG

Victor SR4K-680 High Pressure Regulator Overview

The Victor SR4K-680 (0781-1470) is a premium heavy-duty piston regulator designed specifically for high-pressure inert gas applications. Engineered for precision and durability, this regulator is an essential tool for industries requiring rigorous pressure vessel and dead-end testing. With a substantial delivery range of 300 to 4500 PSIG, it provides the control needed for demanding high-pressure environments where standard regulators would fail. The unit is constructed with a machined brass body and housing cap, ensuring long-lasting performance even under the stress of daily industrial use and harsh shop conditions.

Technical Excellence and Construction

At the heart of the SR4K-680 is a piston-type actuation mechanism made of brass. This design offers superior durability compared to standard diaphragm regulators, particularly in high-pressure scenarios where pressure spikes can occur. The inclusion of a Delrin cap bushing facilitates smooth adjustments, allowing operators to fine-tune pressure settings with ease and precision. The seat assembly is a cartridge type featuring a PCTFE seat, known for its high compressive strength and low deformation, which is critical for maintaining a tight seal at high pressures. Additionally, a bronze sintered inlet filter is integrated to trap particulates, protecting the internal components and extending the service life of the regulator significantly.

Safety and Performance

Safety is paramount when dealing with inlet pressures up to 5500 PSIG. The Victor 0781-1470 is equipped with an external adjustable relief valve, providing a safeguard against over-pressurization. The regulator connects via a CGA 680 inlet, the standard for high-pressure inert gases, and features a 1/4-inch Swagelok outlet with a stainless steel tube fitting for secure, leak-free downstream connections. The large 2.5-inch brass gauges provide clear, easy-to-read monitoring of both cylinder and delivery pressures, ensuring operators always have visibility of the system's status. Whether used for charging accumulators, testing pipework, or pressurizing vessels, the SR4K-680 delivers the reliability professionals expect from Victor.