Abstract: Flanges on high pressure hoses and on fixtures such as pumps and receivers are configured for rapid connection to other flanges. Connecting pins have first ends fixed to first flanges and have second ends with flattened sides with transverse smaller pins that extend out of holes in second joined flanges. Levers have pair clevises at first ends. The pair clevises have cams with thicknesses increasing from openings that fit over projecting ends of the smaller pins. As the levers are pressed toward the outer surfaces of the joined flanges, they increasingly move the flanges into tight contact with each other.