Hello and welcome to our community! Is this your first visit?
Register
Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1
    Established TDF Member JimmE's Avatar
    Join Date
    Dec 2012
    Location
    South Devon
    Posts
    680
    Likes (Given)
    158
    Likes (Received)
    137

    Halcyon SMB - inflation valve replacement

    A few years ago I picked up a used Halcyon SMB with the oral / LP hose inflation tube. Had some issues and there seems to be minimal detail out there on these, so figured this guide could be useful to someone in the future.

    The inflation tubes on these appear to have a one-way valve in them - so air goes in through the inflation tube but has to be released from the OPV/dump as per other SMBs.

    The entire assembly is shrink wrapped and so not easy to see what is there or how it works.



    Last year I found my SMB completely deflated on the surface (realised there was an issue when we reached the 6m stop!) and found that the one way valve had failed - air had all leaked out of the inflation tube.

    Quick search online and it does not appear to be a common issue (certainly no posts anywhere in the last 10 years or so, but there was mention of a service kit.

    Usual cleaning/soaking/blowing/sucking back through the valve (yes, OK! &#128514 failed to resolve the issue so I contacted a couple of halcyon dealers. However they were unable to source the service kit.

    I picked up a couple more of these (used - they’re great, but I think the new price is just too steep for an SMB!) to finish out the season and finally got around to taking a look at the faulty one to see if it could be repaired.

    Firstly, removed the heat shrink to reveal the inflation nipple, a short piece of tube, the one way valve and a couple of hose clamps holding everything together.





    Removing the hose clamps was a little awkward as I was doing this whilst away, without a full tool kit, but I had a couple of pairs of pliers and figured I could easily replace with a standard stainless jubilee clip and/or zip ties if I ended up damaging them.



    Separating out the valve I could easily blow through it in both directions - no obvious issue looking through the ends, nothing a quick poke with a screwdriver was going to resolve.

    Quick google of the various numbers on the valve returned nothing, other than a matching part number from some part of the file system on a Chevrolet. Not the part I need, but got me thinking more generically - must be possible to find a plastic one way check valve with the same diameter input/output pipe.

    Few minutes on eBay found something suitable, shipped from China for £4/pair. Had to be worth a go.

    Couple of weeks later they arrive. The ‘cracking resistance’ (effort to open the valve) is a little higher than the original Halcyon ones - one of their better features I think, as it allows easy oral inflation as well as use of the LP hose, but not so high as others I’ve looked at, such as the AP version and other manufacturers I’ve seen in shops.

    Fitted it this afternoon. Clamps were much easier to replace with a vice and the right tools to hand - to test I have tried to pulled the parts as hard as I dare, and can’t separate them, so that’s good enough for me.



    I didn’t have a suitable diameter heat shrink tube (22mm) so have ordered some and will complete the reassembly next weekend once received.

    So, if this works, total cost of repair will be less than £6 - £4 for the pair of check valves, and £1.33 for a metre of 22mm diameter, 2:1 heatshrink.


    Sent from my iPhone using Tapatalk

  2. #2
    Sorry for being a dick jb2cool's Avatar
    Join Date
    Dec 2012
    Location
    Bracknell, Berkshire
    Posts
    1,568
    Likes (Given)
    110
    Likes (Received)
    448
    I did the same with mine a few years ago. I stripped it down and the one say valve started working correctly then so simply soaked and reassembled it. The outer heat shrink is not required but will make it look nicer.

  3. #3
    Banned
    Join Date
    Jun 2014
    Location
    Broadway Cotswolds
    Posts
    1,826
    Likes (Given)
    227
    Likes (Received)
    821
    JimmE

    If you want a supplier of the OEM original parts try a company called Halkey Roberts

    http://www.halkeyroberts.com/product...n/general.aspx

  4. #4
    TDF Member snattrass's Avatar
    Join Date
    Dec 2012
    Location
    Northumberland
    Posts
    43
    Likes (Given)
    22
    Likes (Received)
    4
    I've got the same problem with my valve, annoyingly on a 13 month old bag.

    "Few minutes on eBay found something suitable, shipped from China for £4/pair. Had to be worth a go."

    What was the Chinese part you found on eBay JimmE? (what search terms other than "one way non return valve") did you use?

  5. #5
    Sorry for being a dick jb2cool's Avatar
    Join Date
    Dec 2012
    Location
    Bracknell, Berkshire
    Posts
    1,568
    Likes (Given)
    110
    Likes (Received)
    448
    There are loads on Amazon you just need to make sure the hose barbs are the right size.

    https://www.amazon.co.uk/Silicon-Rub...32341811&psc=1

  6. #6
    Established TDF Member Energy58's Avatar
    Join Date
    Jun 2014
    Location
    London at the moment
    Posts
    2,089
    Likes (Given)
    336
    Likes (Received)
    565
    You probably need to search for "check valves" which is what they are known as in the US. Those Halcyon blobs are a good bit of kit (although a bit skinny and hard to see in a chop) but honestly HOW MUCH???? I had a Frog one with a similar one way valve which I used as a back up but its now somewhere in the bottom of the Zenobia

  7. #7
    Nicotine, valium, vicodin... notdeadyet's Avatar
    Join Date
    Jan 2013
    Location
    Room 531
    Posts
    7,646
    Likes (Given)
    1782
    Likes (Received)
    5886
    Quote Originally Posted by Energy58 View Post
    You probably need to search for "check valves" which is what they are known as in the US. Those Halcyon blobs are a good bit of kit (although a bit skinny and hard to see in a chop) but honestly HOW MUCH???? I had a Frog one with a similar one way valve which I used as a back up but its now somewhere in the bottom of the Zenobia
    I have a Frog one and a few off Aliexpress that were less than half the price and I can't see a huge amount of difference other than the badge. Maybe it's just superficial but they look extremely similar and not had any issues with them. I was expecting them to be disposable but worked fine.
    Caliph Hamish Aw-Michty Ay-Ya-Bastard, Spiritual leader of Scottish State in England

  8. #8
    Established TDF Member JimmE's Avatar
    Join Date
    Dec 2012
    Location
    South Devon
    Posts
    680
    Likes (Given)
    158
    Likes (Received)
    137
    The specific listing I bought from is no longer active, neither is the seller.

    Searching the exact listing name came up with this item direct from China - it’s the same photo and exact same title as the UK listing I bought from, so assume it will be the same item.

    This post reminded me that I still never finished up putting the heat shrink on and actually using this SMB… project for tomorrow evening I think!

    I would probably be inclined to try this one if I were looking for one today:

    Inline Check Valve 3/8" 10MM One Way Water Non Return Valves Diaphragm One-Way Valve for Fuel Gas Liquid Air(PP/VITON) https://amzn.eu/jkkvdlN

  9. #9
    Sorry for being a dick jb2cool's Avatar
    Join Date
    Dec 2012
    Location
    Bracknell, Berkshire
    Posts
    1,568
    Likes (Given)
    110
    Likes (Received)
    448
    When I did mine around 5 years ago I never replaced the external heat shrink, didn’t really see the point and it’s been fine ever since

  10. #10
    Established TDF Member Steve Clark's Avatar
    Join Date
    Dec 2012
    Location
    Lancaster, UK
    Posts
    2,810
    Likes (Given)
    274
    Likes (Received)
    1828
    Quote Originally Posted by notdeadyet View Post
    I have a Frog one and a few off Aliexpress that were less than half the price and I can't see a huge amount of difference other than the badge. Maybe it's just superficial but they look extremely similar and not had any issues with them. I was expecting them to be disposable but worked fine.
    Imitation is the best form of flattery.

    Anyway, I was a bigger fan when the H ones were £50 rather than £150. The (relatively) new 6ft long slim one is particularly good though.


 
Page 1 of 2 12 LastLast

Posting Permissions

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