4521N-300 - Gentec 452 Series Heavy Duty Nitrogen Regulator, 0-300 PSI Delivery

Technical Overview of the Gentec 4521N-300 Nitrogen Regulator

The Gentec 4521N-300 is a premium, heavy-duty single-stage regulator specifically engineered for nitrogen gas applications. Part of the renowned 452 Series, this regulator is constructed with a forged brass body and housing cap, ensuring exceptional durability and resistance to the rigors of industrial environments. It is designed to handle a maximum inlet pressure of 3000 PSIG, making it compatible with standard high-pressure nitrogen cylinders utilizing a CGA 580 connection.

This model features a delivery pressure range of 0-300 PSIG, providing the versatility required for a variety of technical tasks such as HVAC system purging, pressure testing, and inert gas blanketing. The internal mechanism includes a stainless steel diaphragm (in select high-purity models) or a robust neoprene diaphragm reinforced for general industrial use, ensuring accurate pressure regulation and rapid response to flow changes. The regulator is equipped with a sintered bronze inlet filter, which plays a critical role in preventing particulate contamination from entering the seat assembly, thereby extending the service life of the unit.

The outlet connection is a standard 5/8"-18 UNF fitting, allowing for seamless integration with standard inert gas hoses and equipment. Dual 2.5-inch gauges provide clear, immediate visual feedback on both the remaining cylinder pressure and the active delivery pressure. Safety is paramount in the design, which includes an internal relief valve to protect against over-pressurization events. For professionals requiring reliable gas control for maintenance, repair, and operations (MRO), the Gentec 4521N-300 offers a balance of precision engineering and rugged construction.