How to adjust the pressure of the hydraulic station accumulator

How to check precharge pressure of hydraulic accumulator?

And second, for system availability, to avoid damage and destruction of the accumulator’s separating element and, in turn, optimize machine service life. The conventional way to check precharge pressure of a hydraulic accumulator is to measure pressure on the gas side.

How should a hydraulic accumulator be positioned?

Insure the hydraulic fluid is compatible with the accumulator seals/elastomers. The accumulator should be positioned as near as practical to the source of shock/pulsation, or potential energy need. Porting/piping should be matched as closely as possible to insure free flow of hydraulic fluid in and out of the application system.

What is the operating pressure of a hydraulic accumulator?

Most accumulators used within industry are limited to an operating pressure of 3000 psi. Accumulators are available which operate at higher pressures. In general, hydraulic accumulators are pre-charged one half of the maximum operating fluid pressure, this is adequate for most applications.

How much pressure should an accumulator pre charge?

Generally, if an accumulator is being utilized for energy storage, the pre-charge should be 90% of the minimum working pressure. If used for system shock absorption, 75% of the system working pressure. If used for pulsation damping, approx. 70% of the system operating pressure.

How should a hydraulic accumulator port/piping be matched?

Porting/piping should be matched as closely as possible to insure free flow of hydraulic fluid in and out of the application system. Insure the porting/piping is appropriate for the MAWP of the system. Vertical orientation of accumulator with fluid port down is preferred.

How do I check the accumulator charging pressure?

Checking and adjustment of pre-charge should be performed with an accumulator charging gauge and hose assembly, such as the Tobul GG2527F (Max. 3000 PSIG) or a similar assembly with the appropriately sized pressure gauge, to correspond to system pressure.