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

Harris Model 3520-500 High Flow In-Line Regulator

The Harris Model 3520-500 is a premium high-flow in-line regulator engineered for heavy-duty industrial gas distribution systems. Designed to manage high-pressure flows within piping manifolds, this regulator is an essential component for facilities requiring reliable pressure control and substantial flow rates. The unit features a robust brass barstock body and bonnet, ensuring long-term durability even in harsh industrial environments. Its primary function is to reduce upstream line pressure to a stable, usable delivery pressure of up to 500 PSIG, making it suitable for a wide range of applications including laser cutting assist gases, bulk gas distribution, and heavy fabrication.

A standout feature of the Model 3520-500 is its large 2.75-inch diaphragm made from 302 stainless steel. Unlike neoprene or rubber diaphragms, stainless steel eliminates the risk of contamination caused by diffusion or outgassing, ensuring that the purity of the gas stream is maintained downstream. This makes the regulator an excellent choice for applications where gas integrity is critical. Furthermore, the regulator utilizes a one-piece encapsulated seat design equipped with a 10-micron sintered internal filter. This filter proactively protects the PTFE Teflon seat from particulate contamination, significantly extending the service life of the component and reducing maintenance intervals.

Installation flexibility is maximized through a six-port configuration, offering three high-pressure ports and three low-pressure ports. This design allows for versatile gauge placement and additional outlet options depending on the specific piping layout. The regulator comes equipped with 1/2-inch NPT female inlet and outlet connections, accommodating standard high-flow piping requirements. Dual scale 2.5-inch brass gauges provide clear readings in both PSI and BAR, allowing operators to monitor system performance at a glance. Whether used in a central gas system or a localized manifold, the Harris 3520-500 delivers consistent performance and safety, conforming fully to CGA E-4 standards.