3003564 - Harris Model 3520-500 High-Flow In-Line Manifold Regulator

Harris 3520-500 Inline Manifold Regulator

Upgrade your gas distribution infrastructure with the Harris Model 3520-500, a high-capacity inline regulator built for professionals who demand reliability and precision. This regulator is specifically designed for manifold and pipeline applications where high flow rates and stable pressure delivery are non-negotiable. With a maximum inlet pressure rating of 3000 PSIG and a delivery range up to 500 PSIG, it is perfectly suited for high-pressure supply lines found in welding shops, fabrication plants, and industrial manufacturing facilities. The unit is constructed from solid brass barstock, providing superior strength and resistance to external damage compared to forged or die-cast alternatives.

The internal engineering of the 3520-500 focuses on longevity and performance. It features a one-piece encapsulated seat with a built-in 10-micron sintered filter. This advanced filtration system traps debris and particulates before they can damage the critical sealing surfaces, preventing leaks and ensuring smooth operation over time. The diaphragm is crafted from 2.75-inch 302 stainless steel, which provides a high degree of sensitivity for accurate pressure control while simultaneously preventing gas contamination—a common issue with rubber diaphragms in high-purity applications.

For ease of integration, the regulator features 1/2-inch NPT female connections for both inlet and outlet, allowing for direct threading into standard pipe fittings without the need for complex adapters. The unique six-port design (three high-pressure, three low-pressure) gives installers the freedom to orient gauges and auxiliary lines in the most convenient configuration for their specific setup. Large, easy-to-read 2.5-inch brass gauges display pressure in both PSI and BAR, ensuring compatibility with various measurement standards. Whether you are setting up a new bulk gas system or replacing an aging line regulator, the Harris 3520-500 offers the durability and flow characteristics needed to keep your operations running smoothly.