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tank valves

Discussion in 'Tanks, Valves and Bands' started by medic13, Jul 20, 2004.

  1. medic13

    medic13 Public Safety Diver

    # of Dives:
    Location: carthage NC
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    does anyone recomend a decent tank valve for genesis HP tank of course din thanks my local shop of course dont do din (but can order crap i can do that )
    so i am searching now.
     
  2. Lemonade

    Lemonade Barracuda

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    There is always wide variety for sale on eBay, used & new. Do a search on ]DIN Valve[
     
  3. nativenarcosis

    nativenarcosis Nassau Grouper

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    I bought an isolator manifold and valves from Thermo. Cheaper then the other more name brands but the quality is good and parts are readily available.
     
  4. Ontario Diver

    Ontario Diver Loggerhead Turtle

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    Be careful! Genesis steel HP tanks are not standard tank threads! IIRC they are 1/2 inch not 3/4 inch so you can't just use any valve out of the catalogue. They also take a different o-ring than other tank valves. (they are smaller and thinner)

    You will have to get the correct valves. I suggest ordering them through your shop just so you can nag them if they get the wrong ones!
     
  5. Lemonade

    Lemonade Barracuda

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    Aren't they 7/16 ? Same as older PST HP tanks?
     
  6. Lemonade

    Lemonade Barracuda

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  7. Ontario Diver

    Ontario Diver Loggerhead Turtle

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    Sorry, we call them 1/2 inch and 3/4 inch around the shop. 3/4 NPS and 7/8 UNF are correct.

    There are some really old tanks with true 1/2 inch machine threads on them with post type valves that need teflon tape when you put them together. They are a similar size to 7/8 UNF.

    It is the same size as a SCBA tanks (firefighter tank) but the Genesis uses a much thinner O-ring.
     
  8. medic13

    medic13 Public Safety Diver

    # of Dives:
    Location: carthage NC
    1,499
    1
    0
    if i understand right like my older PST tank they are 7/8 UNF correct.
     
  9. Ontario Diver

    Ontario Diver Loggerhead Turtle

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    I believe so, but it is worth checking. Pull a valve off of an al 80 and see if it fits is one way. :D
     
  10. pescador775

    pescador775 Loggerhead Turtle

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    The HP tank is 7/8 machine thread, fine, O ring. The standard S80 aluminum is 3/4 pipe thread, straight, O ring. The old 72 tanks (circa 1950-1962) were 1/2 pipe thread, tapered. Your tank is 7/8, O ring. The DIN valve you purchase MUST be this size. Do not buy a Sherwood Genesis valve if you do not like the slant design. Buy a US Divers or equivalent. The Japanese Thermo also good.
     

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