2 PL Dowty/Ultra Pattern Gear Pumps - Front/ Single Pump.Anti-Clockwise Rotation.Displacement: 16.66cc/ rev ( 16.66 Litres at 1000 rpm).SAE B 7/8” (22.225 mm) parallel shaft with 6.35mm wide square key 41.9mm standout from the face of flange and ¼” – 28 UNF X 11.4 minimum thread female in the end of the shaft.Dowty 50.75mm Pilot 4 bolt mounting flange (8.7mm holes), 98.55mm x 128.02mm.Dowty body ports – inlet and outlet tappings are identical, 5/16” – 18 UNC x 12.7 minimum thread equispaced on 48.13 PCD, inlet diameter: 25.4mm, Outlet diameter: 19mm.Single pump.Nitrile Shaft Seal