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Tubing and Fitting Design Guide

The following points provide brief guideline in tubing and fitting design for instrument tubing and fittings. The selection preferences may vary between projects.

  • Selection of hook up materials shall consider process fluid pressure and pressure rating to ensure good sealing and integrity.  
  • Tubing thickness shall be selected based on application pressure rating. Consult with the manufacturer for pressure rating of each tubing thickness.
  • Double compression-type tubing fittings are preferred.
  • It is absolutely necessary to use a single manufacturer’s type components of tubing and fitting for the whole project.
  • Mixing different threaded fittings from different manufacturers is not allowed as it could leads to poor fitting sealing.
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