What PSI are 450 hydraulic hoses for loader ?

[pearljam724]

My hoses are too old to identify. Anyone know PSI for loader hoses ?

[B Town]

I use two wire hydraulic hose. I think max operating pressure of 6,000. I am pretty sure the two wire hose is what was used by Deere for the loader application.

[pearljam724]

I found some 2-wire locally and they are only 3,100 PSI. Will that be ok ?

[B Town]

Should be fine. Pressure relief is usually around 2,250.

[original possum]

I believe the relief valve is only active while you are using a function and the lines may see a higher pressure when you are not using that function. Think running into an obstacle.

[B Town]

I believe the relief valve is only active while you are using a function and the lines may see a higher pressure when you are not using that function. Think running into an obstacle.

Correct, there is a difference in nominal operating pressure and burst pressure.

[Jim B]

Talk to the supplier for all the info about the hose. Your local 3100 psi hose is normally showing the working pressure on the casing. Burst pressure is generally about 4 times the working pressure, so a 3100 psi working pressure hose would have a bursting pressure in the 12,000 to 13,000 psi range. the burst pressure rating covers surges. It will be fine.