Operational as a fixed displacement gear pump or motor. The shaft can also be rotated clockwise or counterclockwise. Proven high quality robust design successfully designed into many high volume applications. 72.5 psi maximum low-pressure side (outlet). Exceeding this could create excessive pressure in the housing and leakage from the shaft seal. Make sure there are minimal restrictions when connecting to the reservoir. This motor comes with a built-in shuttle check valve that automatically sends leakage oil to low pressure side. No need for a separate drain line. Cost effect method as a pump or motor for high power rotational motion to drive fans, conveyors, power equipment in construction, agricultural, industrial, and commercial applications. Use with speed reducing gear boxes for winches, wheel drives or any other slower rotational motion needed.