JET BOX OF A SHUTTER VALVE, SHUTTER VALVE PROVIDED WITH SUCH A JET BOX, METHOD FOR CALIBRATING SUCH A VALVE

摘要

The invention relates to a valve stop box (1) with a shutter (6) comprising a valve body (2), and a control rod (3) for the shutter (6) having a part threaded (4), and one end (5) opening into the valve body (2) and integral with the shutter (6) located in the valve body (2), the control rod (3) being locked in rotation around its axis (11), said stop box comprising a casing (8), a centering nut (9) located in the casing (8) and integral with the actuating means (21) of the valve (1), cooperating with the threaded part (4) of the control rod (3), and at least two thrust ball bearings (10) mounted between the centering nut (9) and the casing (8), blocking the centering nut (9) relative to the casing (8) in translation along the axis (11) of the control rod (3), according to the invention the stop box further comprises at least one integrated force sensor (12) in tension and / or compression to capture the eff orts of the control rod (3) respectively during the opening and / or closing phases of the valve (1) with shutter (6) in service operation. /P