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Fuel gas nozzles are critical process connections designed for fuel gas inlet and outlet applications across heat exchangers, pressure vessels, hydrogen cooling systems, LNG equipment, gas processing units and industrial energy systems. Acting as the interface between process equipment and external piping systems, these components support consistent gas distribution, pressure containment and leak-tight operation under demanding service conditions. For industrial clients with project-specific requirements, fuel gas nozzles can be fabricated in line with customer drawings and project specifications, with custom diameters, wall thicknesses, nozzle neck configurations and welding preparations available.
Item | Specification |
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Size Range | 1/2" – 48" |
NPS | DN15 – DN1200 |
Wall Thickness | SCH 5S – SCH XXS |
Length | According to drawing |
End Type | Bevel End / Plain End / Flanged End |
Connection Type | Welded / Flanged |
Design Pressure | Up to 350 Bar |
Design Temperature | -196°C to +650°C |
Surface Finish | Pickled, Passivated, Machined |
This range of specifications allows the nozzles to fit into diverse piping and equipment configurations across low-temperature, high-pressure and high-temperature industrial processes.
Stainless Steel: ASTM A312 TP304L, ASTM A312 TP316L, ASTM A312 TP321, ASTM A312 TP347H
Duplex Stainless Steel: UNS S31803 (2205), UNS S32750 (2507)
Nickel Alloys: Inconel 600, Inconel 625, Incoloy 800H, Incoloy 825, Hastelloy C276
Titanium: Grade 2, Grade 5
Stainless steel fuel gas nozzles are widely used for general industrial gas services, while duplex and nickel alloy grades are selected for applications with higher corrosion or temperature demands. Titanium grades are available for specialized lightweight and corrosion-resistant requirements.
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Fuel gas nozzles fulfill multiple core roles in industrial process systems. First, they enable fuel gas distribution by transferring fuel gas between process equipment and external piping systems. As fuel gas inlet nozzles, they provide controlled gas entry into heat exchangers and pressure vessels; as fuel gas outlet nozzles, they collect and transfer process gas to downstream systems. They also act as pressure boundary connections to maintain system pressure integrity and leak-tight performance, and support flow management for efficient gas flow distribution through headers and manifolds.
These nozzles are deployed across a wide range of industrial sectors. In the LNG industry, they are used in LNG liquefaction plants, LNG recovery systems, LNG superheaters, LNG chillers, LNG regasification systems and floating LNG facilities (FLNG). LNG fuel gas nozzles are engineered to withstand cryogenic operating temperatures down to -196°C.
In the hydrogen industry, hydrogen fuel gas nozzles are installed in hydrogen cooling systems, hydrogen refueling stations, hydrogen pre-coolers and fuel cell systems, with material and fabrication designs compatible with hydrogen service conditions.
For heat exchanger systems, heat exchanger fuel gas nozzles are compatible with microchannel heat exchangers (MCHE), printed circuit heat exchangers (PCHE), shell & tube heat exchangers, gas coolers and gas heaters. Additional applications include gas processing facilities such as fuel gas skids, gas compressor stations, compressor cooling systems and gas distribution modules, as well as pressure vessels where pressure vessel fuel gas nozzles support gas transfer for separator vessels, process vessels and high pressure gas vessels and other custom fabricated equipment.
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Fuel gas nozzle fabrication follows defined process standards to meet project requirements. Full penetration welding is applied to support structural integrity and pressure containment. Precision CNC machining is used for bevels, fish-mouth ends and nozzle interfaces to ensure accurate fitting during on-site installation. The nozzles are designed for high pressure capability, making them suitable for LNG, hydrogen and industrial gas applications. Corrosion resistance is achieved through the selection of appropriate material grades, and custom nozzle fabrication is available based on customer drawings to match specific equipment and fuel gas nozzle assembly requirements.
All fuel gas nozzles undergo structured quality verification processes. Material verification includes PMI testing and spectrometer analysis to confirm material composition. Dimensional inspection covers outside diameter, wall thickness, length, bevel angle and fish mouth profile to ensure compliance with drawing specifications. Mechanical testing including tensile test and hardness test is also available as required.
Each shipment is accompanied by full documentation, including EN10204 3.1 Material Certificate, PMI Report, Dimensional Inspection Report and NDT Report, providing traceable quality records for commercial procurement and project acceptance.
Yes. Fuel gas nozzles can be manufactured according to customer drawings and project specifications, with custom options for diameters, wall thicknesses, nozzle neck configurations, lengths and welding preparations.
For cryogenic services such as LNG applications, austenitic stainless steel grades and nickel alloys are available. For corrosive environments, duplex stainless steel, nickel alloys including Hastelloy grades, and titanium materials can be selected based on specific corrosion conditions.
Standard documentation includes EN10204 3.1 Material Certificate, PMI Report, Dimensional Inspection Report and NDT Report. Additional documentation can be provided upon request to meet project-specific acceptance requirements.
As a fuel gas nozzle manufacturer with experience in custom industrial fabrication, we produce components aligned with industry standards and project specifications. These nozzles support long service life in critical industrial systems including hydrogen cooling systems, LNG equipment, MCHE, PCHE and general fuel gas systems. For project-specific inquiries or custom fabrication requirements, users may reach out to receive detailed proposals and technical support.
