High density pulp and steam mixing

Claim 1

IN THE COMBINATION OF A CYLINDRICAL RECEPTACLE AND AN ANNULAR FLUID PRESSURE CHAMBER SURROUNDING SAID RECPTACLE HAVING AN ANNULAR END IN COMMUNICATION WITH THE ENTIRE CIRCUMSTANCE THEREOF; A PRESSURE-ACTUATED VALVE FOR OPENING AND CLOSING SAID ANNULAR END TO SAID RECEPTACKE, COMPRISING A FLAT ANNULAR PLATE COVERING SAID ANNULAR END, AND MEANS LOOSELY SUPPORTING THE OUTER CIRCULAR EDGE OF SAID PLATE, THE INNER CIRCULAR EDGE OF SAID PLATE BEING UNSUPPORTED AND FREE TO MOVE UNDER FLUID PRESSURE FROM THE PRESSURE CHAMBER IN ONE DIRECTION TO OPEN SAID ANNULAR END OF SAID PRESSURE CHAMBER TO SAID RECEPTACLE AROUND THE ENTIRE CIRCUMFERENCE THEREOF AND TO MOVE UNDER PRESSURE FROM SAID RECEPTABLE IN THE OPPOSITE DIRECTION TO CLOSE SAID ANNULAR END TO SAID RECEPTACLE, SAID PLATE, WHEN OPENING THE END OF SAID PRESSURE CHAMBER, DIRECTING FLUID FROM THE CHAMBER INWARDLY OF THE RECEPTACLE IN A PLANE TRANSVERSE OF SAID RECEPTACLE.