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Butt-Weld Fittings

Eccentric Reducer

Flat-bottom or flat-top eccentric reducer to avoid liquid pockets or gas traps.

Austenitic stainlessDuplexNickel alloys
Size rangeDN50×40 to DN1200×1000
TypeEccentric — flat bottom or flat top
Wall thicknessSch5S–XXS, each end matched to its pipe
StandardsASME B16.9, GB/T 12459-2017, SH/T 3408, DIN 2616
EndsButt weld, ASME B16.25 bevel
TestingDimensional, PMI, RT/UT and hydrostatic on request

Overview

An eccentric reducer keeps one side of the line straight. Flat-bottom on a horizontal liquid line lets the line drain completely; flat-top on a gas line stops a pocket forming where condensate could collect.

Orientation

Flat bottom (FOB) for liquid and slurry lines, so the low point drains to the valve or drain connection.

Flat top (FOT) for gas and steam lines, so no liquid trap forms at the reducer.

Forming

Stamped seamless from tube; the offset is controlled so pipe support spacing and centreline elevation stay as designed.

Materials

  • Austenitic stainless (304/316L, 321)
  • Duplex (2205, 2507)
  • Nickel alloys (625, C-276)
  • Carbon steel (A234 WPB)

Applications

Pump suction lines (flat top)Drainable liquid headers (flat bottom)Steam and condensateSlurry and effluent lines
Every shipment can be supplied with an EN 10204 3.1 mill certificate, dimensional report and PMI report. Third-party inspection at SGS, BV or TUV can be arranged on request.
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