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Gas Outlet Flange is a precision structural sealing component for marine turbochargers. Manufactured from high‑temperature resistant alloy material, it serves as the connecting and sealing part for exhaust gas outlet. It delivers reliable connection, stable sealing performance and good thermal deformation resistance, suitable for routine servicing, shipyard overhaul and fault repair, adapting to high‑temperature exhaust working conditions of marine turbo systems.
A well‑matched gas outlet flange prevents exhaust gas leakage, secures pipeline connection, reduces vibration‑caused wear, lowers downtime and maintenance costs, and ensures reliable operation of turbocharger units. Please provide turbocharger brand, model, flange specifications and part number before ordering to confirm compatibility.
Function of Marine Turbocharger Gas Outlet Flange Spare Parts
Exhaust Gas Sealing & Flow Guidance in Turbine Stage
Gas outlet flanges serve as the critical connecting component at turbocharger turbine outlet. After high‑temperature exhaust gas passes through the turbine wheel, the gas outlet flange forms a sealed joint between turbine housing and exhaust pipeline. The flatness, bolt‑hole layout and inner‑passage geometry directly influences exhaust gas flow efficiency and prevents gas leakage of the turbocharger unit.
Role in Combustion Efficiency
Smooth exhaust gas discharge contributes to stable back‑pressure and consistent air‑fuel mixing inside the engine cylinders. Precisely manufactured gas outlet flanges help maintain normal exhaust flow across the engine operating range, supporting designed power output and fuel combustion characteristics during extended voyages.
Materials for Marine Engine Gas Outlet Flange Components
Heat‑Resistant Cast Steel and Stainless Steel Options
Gas outlet flanges are available in two primary material configurations. High‑strength heat‑resistant cast steel variants are produced through precision casting, suitable for standard marine continuous operating conditions. Corrosion‑resistant stainless steel versions are manufactured for vessels operating in humid or salt‑laden marine environments with high exhaust temperature impact.
Machining Tolerances and Surface Finish
Each gas outlet flange undergoes 5‑axis CNC finish machining to form accurate mating faces, bolt holes and flow ports. Dimensional tolerances are controlled within 0.008 mm, and surface finish specifications follow marine turbocharger OEM drawings. These tolerances support perfect alignment with turbine housing and exhaust pipe assembly.
Compatible Turbocharger Models
Supported Brand Series
MAN B&W | NR15,NR20,NR26,NA40,NA48,NA57,NA70 |
IHI | RH133,RH143,RH163,RH183,RH203,RH223,RH253,RH1022,RH1221,RU110,RU120,RU203Y |
MHI | MET33SB,MET42SB,MET53SB,MET66SC,MET71SC,MET83SC,MET30,MET33,MET42,MET53,MET66,MET71 |
ABB | VTR160,VTR161,VTR200,VTR201,VTR214,VTR250,VTR251,VTR254,VTR304,VTR320,VTR321,VTR354, VTR400,VTR401,VTR454,VTR500,VTR501,VTR564,VTR714 |
TPS44,TPS48,TPS50,TPS52,TPS57,TPS61,TPL65,TPL69,TPL73,TPL77,RR131,RR151,RR181,RR221 |
Additional Turbocharger Spare Parts
Alongside gas outlet flanges, complementary components for the same turbocharger series are available, including turbine wheels, compressor impellers, nozzle rings, compressor diffusers, bearing bushes, thrust bearings, floating bearings, shaft seal rings, rotor shafts, bearing housings, wastegate valves, seal bushes, insert pieces, turbine shafts, repair kits, cartridges, turbine casings, and slide bearings.
Quality Control and Certification for Marine Gas Outlet Flanges
Inspection Procedures Before Dispatch
Each production batch undergoes ultrasonic flaw detection, dimensional verification, and surface finish inspection. Inspection records are archived per batch and can be provided to enterprise customers upon request.
Classification Society Compliance
Gas outlet flanges are supplied with CCS Type Approval documentation where required. These documents support vessel classification surveys and dry‑docking audits for ship owners and marine service companies operating under international maritime regulations.
Applications for Marine Turbocharger Gas Outlet Flange Replacements
Main Propulsion Turbocharger Overhauls
Gas outlet flanges are routinely inspected and replaced during major turbocharger overhauls on main propulsion engines. Thermal deformation, surface corrosion and bolt‑seat damage caused by high‑temperature exhaust can result in exhaust gas leakage and abnormal back‑pressure, affecting engine thermal balance. Replacement gas outlet flanges restore the turbine exhaust stage to original design specifications.
Auxiliary Engine Maintenance Programs
Auxiliary generator turbochargers also require periodic gas outlet flange inspection, particularly for vessels operating in dusty port environments or coastal routes with high airborne salt content. Scheduled replacement supports uninterrupted auxiliary power during port stays and at‑sea operations.
FAQ About Marine Turbocharger Gas Outlet Flange
Which turbocharger brands are compatible with these gas outlet flanges?
Customers can confirm compatibility by providing the turbocharger model and part number from the equipment manual.
Are CCS certification documents available with each order?
CCS Type Approval certificates can be provided for applicable model ranges. Please specify certification requirements at the time of inquiry so that the correct documentation set is prepared before shipment.
What is the typical lead time for gas outlet flange orders?
Standard catalog models are held in stock and can be dispatched within 7 to 10 working days after order confirmation. Custom‑machined variants require additional production time based on drawing review and material preparation schedules.
Can gas outlet flanges be manufactured from customer‑supplied drawings?
Yes, gas outlet flanges can be produced according to customer technical drawings or sample parts. Drawing validation and material confirmation are completed before production begins to ensure dimensional and functional matching.
