how to adjust ap valves lp hose length

gallathan

Done a search, found a few links / past posts, so I know I'll need 2 adjustable spanners. A little aprehensive of dammaging the hoses. I understand that the lp hoses from manifold to diluent/oxygen inflators on a vision inspiration counderlungs come with adjustable hose length fittings out of the box. Can anyone confirm this? Has anyone got any photos / a write up of how to shorten the hoses?. I've found some excellent write ups/tear downs in the past, but can't seem to find one for this...

divetheworld

Its very easy.
Split the two parts with your spanners and screw off the collar from the hose. It is a LEFT HAND THREAD onto the hose so to get it off seems like you are screwing it on.
Cut your hose to the desired length and then refit the outer collare until the hose is right upto the shoulder on the inside of the collar. Then push in the insert and screw it in. This may take a bit of force as newly cut hose should be tight. Use your spanners to tighten the two parts back up and voila!
Dont forget to gas it up and test for leaks.

Brent

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colinicky

As Brent says newly cut hose can be very tight to get the fitting onto .I cheat because I put a tiny amount of O2 grease on the thread of the fitting before I screw it into the hose (remember it is reverse thread ) Have done this on all my hoses & in 2 years I have not had one leak yet .HTH

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Colin

I trust my rebreather completely ,
I just don't trust the user

onwards & downwards

Gilles

I've got about 4 of these in use on my plumbing (on or off board dil supply for ADV-BOV), and none have ever failed.

Just make sure you don't cut your hose too short. Might be best to do the first one an inch or so too long for practise. Take a white marker, measure twice, cut once.

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Gilles
http://www.dirrebreather.com