Are there limitations on accumulator installation positions?

No, however, accumulator life expectancy and performance can be affected by mounting positions. Only diaphragm style accumulators are designed to be mounted in any orientation. The preferred mounting position for a bladder style accumulator is vertical, however, it can be mounted horizontally. A bladder accumulator mounted horizontally will contain residual oil that will not fully evacuate for the application. Application information should be reviewed by Product Management prior to mounting a bladder accumulator horizontally. A piston style accumulator can also be mounted horizontally, however, seal life may be compromised due to friction and fluid cleanliness.