Concentric Reducers

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Concentric Reducers

Goel’s concentric glass reducers are precision-formed pipeline components designed to connect two different nominal diameters (DN) while maintaining a common centerline. The symmetrical geometry ensures uniform flow transition, reduced turbulence, and balanced mechanical loading.

Manufactured from borosilicate glass 3.3, concentric reducers provide excellent chemical resistance, thermal stability, and full vacuum compatibility, making them suitable for demanding industrial and laboratory process applications.

These reducers are primarily recommended for vertical pipeline installations or systems where centered flow alignment is critical.

Technical Specifications

Parameter

 Specification

Product Type

Concentric Glass Reducer

Reducer Series

PR Series

Material

Borosilicate Glass 3.3

Reduction Type

Symmetrical (Center-Aligned)

Nominal Diameter Range

DN 15 → DN 800 (DN 1000 on request)

Orientation

Vertical / Center-aligned pipelines

Surface Finish

Smooth, non-porous internal bore

Vacuum Rating

Suitable for full vacuum

Pressure Capability

Low positive pressure (system dependent)

Chemical Resistance

Excellent

Transparency

Full visual flow monitoring

Standards Compatibility

Glass pipeline system standards

Typical Catalogue Dimensions (Indicative)

Reducer Code

Inlet DN

Outlet DN

Length (mm)

PR18/3

450

80

375

PR18/4

450

100

375

PR18/12

450

300

375

PR24/4

600

100

400

PR24/12

600

300

400

Dimensions may vary depending on DN combination and design requirements.

Applications

  • Vertical glass pipelines
  • Reactor inlet and outlet connections
  • Distillation and evaporation systems
  • Process fluid transfer with size change
  • Laboratory and pilot plant installations

Key Advantages

  • Smooth and gradual flow reduction
  • Minimal turbulence and pressure loss
  • Uniform stress distribution
  • High chemical and thermal resistance
  • Long service life
  • Easy integration into standard pipeline systems

Customization Options

  • Custom DN combinations
  • Special lengths
  • Jacketed concentric reducers (on request)
  • Custom end connections

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