LP Regulator Hose Lengths

[Casarez]

So my wife got a MiFlex hose for her primary which we both think is a bit long. Before buying another does anyone know if there is a way we can figure out the optimum length for her? Some formula etc or would we need to just try out all the different sizes?

 

[rhwestfall]

too many variables. Its trial & error... see what is working when you turn your head left. Fittings can make differences too.

Also, keep in mind, length needed can change with the mounting height of the tank, so consistent assembly is also key of you are cutting it close....

 

[Couv]

First find the best hose routing. To do that:

*First mount your bc or backplate and wing on a tank.
*Remove all the hoses and port plugs from the first stage.
*Install the first stage on the tank valve.
*Install the primary second stage hand tight.
*Follow with the secondary second stage, inflator hose and SPG hoses.

After you've found the best configuration, torque down the hoses and install the port plugs. Note that some first stages only have one HP port, so that might limit the options you have. Now it's time to work with your buddy in a pool. With your equipment on have your buddy take measurement and then purchase the correct lengths.

Before you settle on hose lengths and routing configurations, spend a little time reading in the Hogarthian Diving forum, you'll pick up some great ideas.

 

[halocline]

Its easy, the optimum length for a primary 2nd stage hose in OW is 5 ft, routed in the modified hogarthian manner across the chest and around the back of your head.

If you insist on staying with the 'normal' PADI style routing, (echhh) you can try setting up the gear on dry land, but don't forget if you stand up with a tank and jacket BC, the tank is likely to sag several inches lower than where it will actually sit when you're diving. This can make you think you'll need a longer-than-necessary primary hose.

 

[Casarez]

too many variables. Its trial & error... see what is working when you turn your head left. Fittings can make differences too.

Also, keep in mind, length needed can change with the mounting height of the tank, so consistent assembly is also key of you are cutting it close....

Kind of what I thought. Thanks.

---------- Post added ----------

Its easy, the optimum length for a primary 2nd stage hose in OW is 5 ft, routed in the modified hogarthian manner across the chest and around the back of your head.

This is for the wife and she is not comfortable with a long hose setup but thanks.

If you insist on staying with the 'normal' PADI style routing, (echhh) you can try setting up the gear on dry land, but don't forget if you stand up with a tank and jacket BC, the tank is likely to sag several inches lower than where it will actually sit when you're diving. This can make you think you'll need a longer-than-necessary primary hose.

Perhaps a pool session would be better so we can test it out in water.

---------- Post added ----------

First find the best hose routing. To do that:

*First mount your bc or backplate and wing on a tank.
*Remove all the hoses and port plugs from the first stage.
*Install the first stage on the tank valve.
*Install the primary second stage hand tight.
*Follow with the secondary second stage, inflator hose and SPG hoses.

After you've found the best configuration, torque down the hoses and install the port plugs. Note that some first stages only have one HP port, so that might limit the options you have. Now it's time to work with your buddy in a pool. With your equipment on have your buddy take measurement and then purchase the correct lengths.

Before you settle on hose lengths and routing configurations, spend a little time reading in the Hogarthian Diving forum, you'll pick up some great ideas.

Thank you for the post I think we may be doing this route with a pool session.