Be a fan of ScubaBoard.com

Welcome to ScubaBoard, an online scuba diving forum community where you can join over 205,000 divers from around the world discussing all things related to Scuba Diving. To gain full access to ScubaBoard (and make this large box go away) you must register for a free account. As a registered member you will be able to:

  • Participate in over 500 dive topic forums and browse from over 5,500,000 posts.
  • Communicate privately with other divers from around the world.
  • Post your own photos or view from well over 100,000 user submitted images.
  • Gain access to our free classifieds marketplace to buy, sell and trade gear, travel and services.
  • Use the calendar to organize your events and enroll in other members' events.
All this and much more is available to you absolutely free when you register for an account, so sign up today!

If you have any problems with the registration process or your account login, please contact the ScubaBoard Support Team.
Page 3 of 3 FirstFirst 123
Results 21 to 22 of 22

Thread: Filter/Water Issues

 

  1. #21
    Frequent Poster


    I Love DogTooth Tuna
     

    Join Date
    Jul 2002
    Location
    Indonesia
    Posts
    144
    Dives
    2,500 - 4,999
    Quote Originally Posted by iain/hsm View Post
    Hi Iya.

    IMHO Bauer is NOT more comprehensive with the data, they just didn't disclose the fact that there TUV approved separators were not up to the job in hand.
    That and because of the number of explosions they had with there original TUV approved separators they changed the material improved the tensile strength.
    Originally their separators (M76 thread on a 95mm OD and 270 length) were rated by TUV for 350 barg but also only designed under TUV for ridiculously
    minimal 2.5 to 1 safety margin.

    It frankly was an accident waiting to happen IMHO the german TUV lot acted clueless as to the material, wall thickness tensile strength and internal thread
    architectures, but in typical germanic approach expected everyone else to comply.

    In the UK we didn't, and years later as they started to explode under load. (The material was HE30TF or 6082 the Germans designate this as ALMG SI1 F31
    it will be stamped on the shell, but another critical flaw was that the working pressure to burst was only 2.5 to 1) Therefore only a 12,000 pig burst design

    The redesign issued is now with a 4:1 safety boundary, so now a 20,000 psig burst design.

    Most filters and separators now are designed under the ASME 4:1 safety code if the external and or internal dimensions need to be the same as the older
    weaker material then the tensile strength of the alloy needs increasing. The old HE30 TF or 6082 or ALMH SI1 F31 has a tensile strength of around 270 Mpa

    By comparison most new designed filters are in 7075 T6 alloy with a tensile of over 500 Mpa, also to factor in thinner wall thickness but with greater
    strength in a non corroding atmosphere. Zuführung durch die Technik des Esels eines Esels,
    Or as we say over here "the backside of a donkey is an ass". LOL Iain Middlebrook

    Hi There Ian,
    Yes I did once read on this alloy change, you wrote this info too some years ago. Many thanks.
    My stuff are all the new alloys, still I dont like applying too much pressure cycles.

    IYA
    .

  2. #22
    Frequent Poster


    Has not set a "status"
     

    Seahuntjerry's Avatar
    Join Date
    Aug 2003
    Location
    Minnesota
    Posts
    60
    Dives
    2,500 - 4,999
    Hi,
    IYaDiver,
    Helped with some tips on My Oceanus bauer compressor.
    This was used by paintball idiot over 250 hours on filter and oil had ten times normal amount in it.
    Still cleaning out the thing air is clean of oil however slight smell.I really don't want to pull all the lines and clean then out.

    A word to the wise when your buying a used compressor from paintball or scuba guys.
    Thanks for the Help on this site,
    Seahunt Jerry

Page 3 of 3 FirstFirst 123

Similar Threads

  1. Cold water issues with Titan LX Supreme
    By Mahhz in forum Regulators
    Replies: 7
    Last Post: March 16th, 2010, 02:33 PM
  2. Oysters Filter Water
    By Lee Taylor in forum Marine Life and Ecosystems
    Replies: 4
    Last Post: November 8th, 2009, 05:54 PM
  3. blue water filter inside or out
    By diverdowndiverup in forum Underwater Photography
    Replies: 4
    Last Post: September 13th, 2004, 08:35 AM
  4. Blue water filter?
    By DivemasterUK in forum Underwater Photography
    Replies: 12
    Last Post: June 16th, 2004, 09:26 AM
  5. using a water filter as a canister
    By el-ninio in forum Do It Yourself - DIY
    Replies: 7
    Last Post: November 25th, 2003, 07:21 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •