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  • Users: valvehowker
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  1. valvehowker

    New Nukes with Dem Administration?

    People need electricity and, although they would prefer this to come with a lower carbon footprint, the decider will be price. The driver for building new nuclear capacity will come down to the relative cost of oil, gas & coal which, given the supply and demand position, I can only see...
  2. valvehowker

    Powder metallurgy

    Does anyone have any experience of near-net shape valve bodies produced by Hot Isostatic Pressed (HIP) metal powders? The following abstract states that approval has been obtained from ASTM and API: linkinghub.elsevier.com/retrieve/pii/S1006706X08600643
  3. valvehowker

    Estimate Seating / Unseating load of a 1" Full Port Ball Valve

    FCCE, Are these ball valves from a defunct valve maker. Are they all the same? What are the seat materials? Do you need the torques at different temperatures eg under normal and fault conditions? Cordially Bill H
  4. valvehowker

    Wallmann valve

    Thanks. I'm waiting to see if I get a response from the Eon corporate information service. If not I'll try the valve forum, although I've noticed they don't like cross posting between groups.
  5. valvehowker

    Mechanical designers books and others....

    Try page 38 of this review: http://books.google.co.uk/books?id=CAe8YRLFGq4C&printsec=frontcover&dq=ENGINEER&sig=ACfU3U3b4Y1rvBy8lQN9zmsRTV3fZ-i24w#PPA42,M1
  6. valvehowker

    Wallmann valve

    Could anyone advise me what a Wallmann valve is?
  7. valvehowker

    Greasing of Packing

    Could you tell us a bit more about the use of Neverseez on Grafoil packings. Is this to aid assembly or to help the graphite packing surface bed in? Does it allow a less polished surface on the valve stem? Does it significantly reduce friction and valve operating torque? Does the Neverseez...
  8. valvehowker

    PWR relief valves

    Can someone explain me the over pressure protection methods for the new generation of PWR from Westinghouse and Areva. Is there a motorised valve fluid release controlled from the plant control system for initial protection, with an ultimate backstop safety valve(s)? Are the ultimate safety...

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