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Recent content by mzappett

  1. mzappett

    Pressure and Temperature cycles testing acc. to API 17D

    Hi MarcoFio 1) Yes, use Nitrogen 2) No, you cannot use water (or any other liquid) for Pressure/Temp. cycles test 3) No problem of using Nitrogen at high pressure/temperature (even 10k psi @ 180degC) regards Massimo
  2. mzappett

    API 14A slurry test - viscosifier to be used

    Dear all I'm going to perform slurry test on a 18" ball valve and I need to knw how to increase the viscosity of the slurry fluid that I've prepared (water + 2% of sand 150 microm grain size): API14 calls for a 'viscosifier' to be added to water in order to achive a value of viscosity of 70...
  3. mzappett

    Suppliers of 42" Fully Welded Pipeline Valves

    Hi try VIAR Valvole (ITALY) http://www.viarvalvole.com Massimo
  4. mzappett

    Inside diameter for BW ends ball valve

    Dear Cathyvbs, if the valve is piggable, I mean that inside the pipe that will be welded to the valve ends will pass a 'pig' - a device used to clean the pipeline, the valve bore shall be equal to the I.D. of the pipe. best regards Massimo
  5. mzappett

    Is ASTM A105 compatible with Jet A1 fuel?

    Hi all, I am trying to find informations about the compatibility of ASTM A 105 N (and other carbon steel like LF2, F60, etc...) with aviation fuel, especially with Jet A1 class. Bets regards Massimo -- Ing. Massimo Zappettini VIAR Valvole Technical Dept.
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