Two methods for determining the direction of hydraulic joints

Date:13 Apr 2020

In the daily work of the industrial field, it is often […]

In the daily work of the industrial field, it is often involved in connecting hydraulic hoses. At this time, how to determine the joints of hydraulic hoses becomes a crucial matter. They must determine the correct direction to ensure that they can be installed correctly. And apply pressure on the hose with minimum torque.

The assembly direction depends on the degree measured in the clockwise direction. According to SAE J517, the orientation angle tolerance for the total length (OAL) up to 24 "should be ± 3 °, and the orientation angle tolerance for OAL over 24" "should be ± 5 °. If the hose is in the structure of the hose assembly If the angle of the direction is not correct, the performance and life of the component will be greatly reduced.



To avoid joint orientation, do not use angle joints on both ends of the hose assembly. Use a straight connector and an angle adapter at the other end. This method makes installation easier and does not require orientation.


To determine the angle of the hose end, there are two different methods. There are near-end reference method and far-end reference method. Each direction is explained below. Whether you are using the near-end method or the far-end method, the key is to be consistent. When ordering hose assemblies, please specify which method to use to ensure the correct orientation.

Near-end reference method:
Hold the hose assembly as if you were looking at the telescope.
Place the elbow accessory closest to you at 6 o'clock (direct down).
Find the location of the furthest accessory and read it counterclockwise.

Remote reference method:
Hold the hose assembly as if looking at the telescope.
Move the elbow accessories as far away as you can from 6 o'clock (straight down).
Determine the position of the closest accessory and read it clockwise.