2PE Series Aluminum Gear Pump, 0.84 cu in/rev, 2-Bolt SAE A Mounting Flange, 3/4 St Keyed x 1.25 long SAE A Shaft, SAE -12 Inlet, SAE -10 Outlet, CW Rotation

Clockwise is how it ships, but the rotation is not locked in permanently. You can switch it to counterclockwise by reversing the position of the drive shaft and driven shaft, then rotating the front flange. Not a complicated job if you have the pump in front of you and know your way around the assembly.

For pressures under 2900 PSI, shoot for ISO 4406 20/19/16. If you're pushing it harder, over 2900 PSI, then you'll want to tighten that up to 19/18/15.

Continuous operation tops out at 3500 RPM for this displacement, and intermittent bursts can go up to 4000 RPM. The axial compensation design using floating bushings is what keeps volumetric efficiency solid across the working pressure range, so you're not bleeding off performance as pressure climbs. At 0.84 cu in/rev, rated flow comes in around 6.5 GPM. Running it within those speed limits is where you'll get the most out of it.