The present invention relates to a hydraulic circuit mechanically linked to a panel (50) and agricultural harvesters comprising the same. The hydraulic circuit of the present invention can be used to facilitate the transition of hydraulic states from a quick speed to a slow speed, when opening and closing the panel (50). The hydraulic circuit comprises a restrictive orifice (120,215) and a fluid stop valve (A) that, when opened, diverts the path of pressurized fluid away from a hydraulic actuator (110, 200) during the actuator's extension. The diversion of pressurized fluid away from the hydraulic cylinder (110,200) or through the restrictive orifice (120, 215) substantially reduces the speed at which the panel (50) opens or closes.
