22X56 - ESAB 125 PSI Brass Relief Valve 3/4-Inch NPT

Critical Over-Pressure Protection for Industrial Gas Systems

The ESAB 22X56 Relief Valve is an essential safety component designed for industrial gas manifolds, distribution piping, and station drops. Engineered to protect downstream equipment and personnel, this valve is factory-set to relieve pressure at 125 PSIG. In the event of a regulator failure or thermal expansion causing system pressure to exceed this limit, the valve automatically opens to vent the excess gas, preventing catastrophic failure of hoses, regulators, or piping components.

Robust Brass Construction

Manufactured from high-quality brass, the 22X56 offers excellent resistance to corrosion and oxidation, making it suitable for a wide range of industrial environments. The brass body is non-sparking, a critical feature when used in environments containing flammable gases. The internal spring mechanism is calibrated for precision, ensuring the valve opens consistently at the designated pressure and reseats automatically once the pressure drops back to safe operating levels.

High-Flow Venting Capacity

Equipped with a 3/4-inch NPT male connection, this relief valve is designed for systems requiring significant venting capacity. The larger port size allows for rapid expulsion of gas, preventing pressure buildup even during substantial upstream failures. This makes it ideal for main line headers and high-volume manifold systems where smaller 1/4-inch valves might restrict flow and fail to relieve pressure quickly enough.

Installation and Compliance

Integrating the ESAB 22X56 into your gas distribution system helps facilities meet safety standards regarding over-pressure protection. It is commonly installed on the low-pressure side of manifold regulators or at the end of pipeline runs. The standard NPT threading ensures compatibility with common pipe fittings and manifold blocks. Regular inspection and testing of relief valves are recommended to ensure the spring mechanism remains free of debris and fully functional.

Technical Specifications

• Part Number: 22X56
• Pressure Setting: 125 PSIG
• Connection: 3/4-inch NPT Male
• Material: Brass
• Reseating: Automatic