Harris Model 3500 High-Pressure Argon Regulator, CGA 680, 0-125 PSIG

Harris Model 3500 High-Pressure Regulator Overview

The Harris Model 3500 (SKU: 3003507) is a premium high-pressure regulator designed specifically for heavy-duty industrial and laboratory applications requiring inlet pressures up to 5500 PSIG. Engineered by the Harris Products Group, this regulator features a robust CGA 680 inlet connection, making it suitable for high-pressure argon and other inert gas cylinders that exceed the standard 3000 PSIG limit of typical CGA 580 fittings. The unit provides a delivery pressure range of 0-125 PSIG, offering precise control for downstream equipment.

At the core of the Model 3500 is Harris's proprietary one-piece encapsulated seat design. This advanced internal component includes a PTFE filter that protects the seating surface from particulate contamination, a common cause of regulator failure. The body and bonnet are machined from solid brass bar stock, ensuring exceptional structural integrity and resistance to deformation under extreme pressures. Safety is paramount in high-pressure environments; therefore, this model is equipped with a tamper-proof, self-seating internal safety valve to prevent over-pressurization.

This regulator is ideal for high-pressure testing, charging accumulators, and specialized laboratory manifolds. The large 2.5-inch dual-scale gauges provide clear readings in both PSI and Bar, facilitating accurate monitoring of cylinder and delivery pressures. With its rugged construction and adherence to CGA E-4 standards, the Harris 3003507 is a reliable choice for professionals managing high-pressure inert gas systems.