The A10 series is features an open circuit that is interchangeable with Rexroth. The flow is proportional to drive speed and displacement. Adjusting swashplate design allows for smooth variation of flow. Pressure control allows you to set and maintain constant pressure. Built in flow control valves allows you to restrict maximum flow. This series has a presaure rating of 4000 PSI. The ports located on opposing sides of pump. Port adapter flanges are available upon request