Hoses and pressures question

[Peter_C]

So after much reading here I am lengthing my regulators hose. I bought an OMS hose that is for LP aka low pressure. Well when I received the hose it said maximum psi 250. The original ScubaPro hose is rated to 400 psi. That is a big difference and has me worried that I would be putting an inferior hose in place. The OMS is also of a larger diameter, although that does not matter.

The question is...should I put the OMS hose on or find something with a higher rating? If so what brand of hose? Also from what I can find is the second stage pressure around 150 psi?

Thanks!
Peter

 

[jonnythan]

250 psi is more than sufficient.

Typical pressure in an LP hose is generally 100-150 psi, max.

Your second stage acts as a bleeder valve, so in the case of a first stage failure that allows the LP pressure to increase, the regulator will vent the air before the pressure in the LP hose gets any higher than that anyway.

 

[DA Aquamaster]

Nearly all manufacturers use an intermediate pressure range of 120-145 psi and the second stage will freeflow and vent excess pressure long before 250 psi is reached.

Plus 250 psi is a service pressure and I would expect the burst pressure to be about 150% of that - about 375-400 psi.

 

[Peter_C]

Thanks for the replies. The hose is installed and will hopefully last for years to come.