en250

  1. F

    Cold Water regulator standards

    TL/DR: Poseidon XStream, Mares Abyss 22 Navy II, and Interspiro RS4 have been harshly tested to 198ft at 29 ± 1°F (-1.7 ± 0.6°C). This exceeds any nationally approved standard. Information in this post is only as good as the date of this post, the Navy may add or subtract something from their...
    • Fidelis
    • Thread
    • cold diving cold water en250 en250a freeze up navy navy experimental diving unit nedu standards
    • Replies: 20
    • Forum: Regulators
  2. Kamaros

    EN250 Rating

    I see that my Signature Series First Stage is certified to the EN250 standard, rather than EN250A. Based on that, is it correct to assume that I should be getting myself a second first stage and using an H-valve or learning to dive doubles if I want to dive in cold and/or deep water?
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