Flow Nozzle Assembly

Description

Flow nozzle is a DP type flow meter consisting of rounded profile at inlet providing a smooth inlet to the fluid & the particles in the steam there by reducing the wear & tear thus extending the product life. This smooth inlet passage leads to lesser pressure drop & more efficiency. Eureka's NZL series is typically used for measurement of erosive & high velocity flow, such as high pressure high temperature steam. It can also be used with other fluids such as water, air or other gases.

Applications

  • Power Plant
  • Sugar Industry
  • Pulp & Paper Industry
  • Gas Processing & Transmission

Features

  • Best suitable for measurement of high pressure high temperature high velocity steam measurement.
  • Smooth profile & rigid structure makes the assembly extremely stable.
  • Absolutely leakage free for weld in type assembly.
  • Zero maintenance since no moving parts.
  • Repeatability: 0.3%
  • Less straight lengths requirement.

Nominal Sizes Available

  • Diameters 50mm to 630mm, as specified by standards for respective type
    (For larger sizes please consult Eureka representative.)

Models Available

  • Based On Element
    • Long Radius High Beta
    • Long Radius Low beta
    • ISA 1932
  • Based On Mounting
    • Welding type
    • Flanged type
    • Flanged type with throat tap nozzle (as per PTC-6 standard)

Design & Manufacturing Standard

  • ISO-5167 part III
  • ASME PTC-19.5
  • ASME PTC-6 (The results are used as the basis of Turbine acceptance)
  • ASME MFC

Diameter Ratio

  • 0.25 to 0.8 - for Long Radius High Beta
  • 0.20 to 0.5 - for Long Radius Low Beta
  • 0.3 to 0.8 - for ISA 1932

Pressure Tapping

  • Radius taps (D-D/2 tapping) – For Long Radius high beta
  • Throat taps – For Long Radius Low beta
  • Corner taps – For ISA 1932

Uncertainty

  • Long Radius High Beta - 2%
  • Long Radius Low Beta - 0.25%*
  • ISA 1932 - 0.8% to 1.2%

*when used with PTC-6 standard

Materials

Selection based on temperature & process conditions.
Available materials are:

  • Element : SA.182 F316
  • Pipe: SA.106Gr. B / SA335 P11 / SA335 P22 / SA.335P91
  • Flange material: SA105 / SA182F11 / SA182F22 / SA182F91

* Other materials available on request