Container having gate valve

A non-rising stem gate valve comprising:

• a valve housing;
• a valve port for passage of material through the valve housing;
• a gate supported by the valve housing and movable with respect to the valve port, the gate movable to a closed position with respect to the valve port for closing the valve port and movable to an open position with respect to the valve port for opening the valve port, the gate including a follower for driving movement of the gate;
• a drive assembly configured to move the gate to open and close the valve port, the drive assembly including a drive shaft and at least one bearing assembly, the bearing assembly supporting the drive shaft for rotation about an axis of rotation, the drive shaft including a first threaded section in threaded engagement with the follower for moving the gate between the open and closed positions by rotation of the drive shaft about the axis of rotation, the bearing assembly including first and second races and a plurality of ball bearings between the first and second races, the first race comprising a race track on which the plurality of ball bearings roll when the drive shaft is rotated about the axis of rotation, the first race including a race track support body, the race track support body configured to support the race track against a thrust force in a thrust direction generally parallel with the axis of rotation, the drive shaft including a second threaded section in threaded engagement with the race track support body for resisting movement of the race track support body with respect to the drive shaft in the thrust direction.