Recent content by Markos Valsamis

  1. M

    APEKS diaphgragm first stage: How much IP creep is ok?

    Ah, thanks I didn't realise this is different. Is it known why this occurs? I would have thought if there is any change in IP at any point, it means there is a leak, and to be honest I have been surprised it doesn't just continue increasing (which would make sense if there was a leak)?
  2. M

    APEKS diaphgragm first stage: How much IP creep is ok?

    I have now serviced around 30-40 first stage regulators from Apeks (DS4, DST etc). The below relates to the regulator straight after I have serviced it (official parts, ultrasonic cleaner, etc). Some first stages seem to have a very clean lock-up at a particular IP, others will immediately go...
  3. M

    BTS manifold technical specifications/service

    Hello, Does anyone have a reference/parts diagram that shows what O rings are used etc for the standard BTS manifold pictured?
  4. M

    Shearwater Perdix AI SAC calculation

    Just wondered if it can identify that zero means like you are breathing from something else so as to remove those readings from it's calculation of the average.
  5. M

    Shearwater Perdix AI SAC calculation

    I asked shearwater tech support who said that if you use a gas that doesn't have AI then the overall calculation won't be correct.... I was hoping for some more insight into that but didn't get any (despite giving the theoretical scenario I posted on this thread).
  6. M

    E/O connectors- wash after use?

    Hello- do you rinse your E/O connectors in fresh water after use in the sea after each dive or is it best to leave them be?
  7. M

    Shearwater Perdix AI SAC calculation

    Hello all, I have a transmitter for my back gas but not for my deco cylinder. During a gas-switching dive, does the Perdix account for the fact I have switched to a non-AI gas when calculating the average SAC for the dive? For instance, if you breathe at a steady 0.6 bar/minute, and do half the...
  8. M

    Heating system- battery

    Thank you all, this is very useful information. Currently with the sort of diving I am doing I don't think I need more than around 45 mins of heating per dive. I appreciate the quality and value of something like the UWLD @tbone1004 recommends, though I have to think whether this is something I...
  9. M

    Heating system- battery

    Is that for the Santi heated vest? They quote 1h15-1h30 run time. I can imagine that's optimistic but 30 minutes seems surprisingly little!
  10. M

    Heating system- battery

    Ive got the Santi heated vest and thermovalve but would like your opinion on the battery. I'm currently considering: 1) Yellow diving 10ah battery 2) Santi 6ah battery I am slightly concerned the 6ah battery may not quite be sufficient for 60-90 minute dives (at least not two of them which I...
  11. M

    How to mount 2x canisters for light and heating system

    Thanks that's very useful. Whats the best way to ensure the E/O or equivalent cord for the heating system is the right length and not too long? Are these interchangeable i.e. can buy a different length? Or do you make a loop out of it if too long?
  12. M

    How to mount 2x canisters for light and heating system

    For those who have two separate battery canisters, one for a heating system and one for an umbilical torch, how do you store these in your DIR twinset rig? Are they both next to each other on the right waist harness so that the long hose loops round both together? Is there a better way?
  13. M

    O2 cleaning first stage question

    I regularly service my Apeks DS4 first stage but now want to make sure it is O2 clean for use with 80% O2. Is the following sufficient for this? 1. BIOX ultrasonic cleaner fluid 5 Litre BIOX Ultrasonic Cleaner Fluid - For Breathing, Scuba Equipment and Brass Instruments Cleaning...
  14. M

    Single first stage on twinset?

    Would this prevent airflow if the valve was accidentally open? Presumably water entering isn't a concern in any scenario as the cylinder is pressurised?
  15. M

    Single first stage on twinset?

    I Have two full sets of regulators for use with single tanks (2 first stages, 4 second stages). I only have one twinset and my buddy would be renting a single tank. So I have enough second stages for both of us, not not enough first stages of I am to use both!
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