0781-1444 - Victor SR4J-350 Piston Regulator for Methane/Hydrogen

Victor SR4J-350 High Pressure Piston Regulator Overview

The Victor SR4J-350 (0781-1444) is a premium heavy-duty high-pressure piston regulator designed specifically for Methane and Hydrogen gas applications. Engineered for demanding industrial environments, this regulator is part of the renowned SR 4 series, known for its robust construction and reliability in high-pressure scenarios. Unlike standard diaphragm regulators, the SR4J utilizes a piston-type actuation mechanism made of brass, which provides superior durability and resistance to the stresses associated with high delivery pressures ranging from 200 to 3000 PSIG.

Constructed with a machined brass body and housing cap, the SR4J-350 is built to withstand the rigors of heavy industrial use. The internal components are equally robust, featuring a cartridge-type seat assembly with a PCTFE seat. This material selection is critical for maintaining seal integrity under high pressure. The regulator also incorporates a sintered bronze inlet filter, which plays a vital role in preventing particulate matter from entering the regulator and damaging the seat or piston, thereby extending the service life of the unit.

Precision and ease of use are key attributes of the SR4J-350. It features a Delrin cap bushing that facilitates smooth and precise pressure adjustments, allowing operators to dial in the exact pressure required for sensitive applications like pressure vessel testing and dead-end testing. The unit comes equipped with large 2.5-inch brass gauges that provide clear, immediate visual feedback on cylinder and delivery pressures. The outlet connection is a 1/4" Swagelok with a 1/4" stainless tube fitting, ensuring a secure and leak-free connection to downstream equipment. With a maximum inlet pressure rating of 3000 PSIG and a CGA 350 inlet connection, this regulator is the definitive choice for professionals requiring safe and accurate control of Methane and Hydrogen gases.