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  1. The Obturator

    ASME BPVC Section XIII - Rules for Overpressure Protection

    INFORMATION ASME BPVC Section XIII - Rules for Overpressure Protection is due to be released 21st July 2021. This new ASME BPVC will include requirements for Pressure Relief Devices from ASME I, III, IV, VIII & X Has anyone got any information at this time, as to what will be different to...
  2. The Obturator

    Forum Related Question

    Hi. I couldn't find anywhere within the forum, how to make contact on forum issues. I have 2 issues;- 1. Can this "Safety Relief Valve Engineering (PSV)" forum be moved to Mechanical Engineering ? There are new users coming on having difficulty finding this forum. Might be also an idea to...
  3. The Obturator

    Hopkinsons (UK) Boiler Safety Valves Type A7000

    My turn to seek advice. I'm trying to ascertain the fate of the UK made Hopkinson boiler safety valves type A7000. I know that at one point they were swallowed by Weir (now Trillium) and moved to their manufacturing site in Huddersfield. Was this design finally killed off at some point...
  4. The Obturator

    ISO - 4126 (Parts 1 to 11)

    Anybody know where the standards ISO - 4126 can be viewed on-line ? That is to say, for information without charge. While I am on the subject, are these standards being specified, used etc., by end users, engineers, new builds etc., and in what parts of the world. Thank you for your input...

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