The first thing to consider when you are selecting hydraulic products is that the PSI is. Different types of hydraulic air driven liquid pumps will have different PSIs and you will want to be sure you find a product that has a sufficient pressure to meet your needs. For example, you may need only pressures up to 5,000 psi or 340 bars or you may wish for more power and may instead opt for a hydraulic pump that has an output pressure of up to 10,000 PSI or 680 bar.
Peak hydraulic horsepower output is another important consideration. Find out what the peak hydraulic horsepower output is at different levels of stall pressure. This, too, can help you to ensure that your hydraulic pump works for your application.
Of course, yet another key consideration when making a choice about which hydraulic product to use is whether you need your pump to be portable or not. If you need a pump that works for a portable application, then you may wish to look for a hydraulic product that has a self-contained reservoir.
Some portable hydraulic air pumps can also be mounted on 1, 2 or 6 gallon reservoirs in order to allow for the operation of small actuators or medium actuators, but a self-contained reservoir offers more flexibility for use in more situations.
The maximum air consumption is something else that should be considered. Air consumption can vary depending upon the pump being used. For example, you might opt for a maximum air consumption of 29 scfm or you may find a lower air consumption of 12 scfm to be better suited for your application.