3003563 - Harris 3520 Series High Flow Pipeline Regulator, 0-250 PSIG

Heavy-Duty Gas Control with the Harris 3520-250

For welders and fabricators relying on shop manifolds or bulk gas systems, consistent pressure is the key to quality work. The Harris 3520-250 High Flow In-Line Regulator is the workhorse you need to manage gas delivery at the station level. Designed for high-capacity applications, this regulator ensures that your torches, machines, and tools receive a steady flow of gas without the starvation issues common with undersized regulators. Its 1/2" NPTF connections make it a true line regulator, ready to plumb directly into your shop's hard piping.

This model offers a robust delivery pressure range of 0-250 PSIG, making it suitable for high-pressure applications such as heavy heating, plasma cutting, or laser assist gases. The high flow coefficient (Cv) means it can pass significant volumes of gas without a massive pressure drop, ensuring your equipment operates at peak efficiency. The large diaphragm acts as a sensitive control mechanism, reacting instantly to changes in downstream demand to keep your set pressure constant.

Durability is standard with Harris products. The 3520-250 features a rugged brass construction that resists corrosion and physical damage. Inside, the encapsulated seat design includes a filter to trap pipe scale and debris before it can damage the regulator seal, a common issue in older piping systems. By installing the Harris 3520-250 at your drop stations, you gain precise control over your gas supply, improving safety and efficiency across your operations.

Applications

• Pipeline distribution systems
• High-flow manifold stations
• Laser cutting assist gas supply
• Heavy-duty oxy-fuel cutting and heating
• Pressure testing and blanketing