The utility model discloses a low torque stop valve relates to valve technical field. The utility model discloses a valve body is provided with the opening and closing subassembly in its inside, and the opening and closing subassembly includes the bonnet fixedly connected in the top of valve body, and the top fixedly connected with first installation shell of bonnet, and the inside all through the
retainer movable joint with a plurality of globes of first installation shell periphery, and the top fixedly connected with second installation shell of first installation shell, and the top rear end rotationally connected with the sleeve
pipe of second installation shell. The utility model through globes reduces the
friction force that valve rod motion produced, and through the
pinion on the sleeve
pipe with the
pinion on the drive rod to reduce the torque size of input, thereby realized reducing the overall torque size of valve, solved the single problem of the current torque reduction mode, and through first
threaded rod and sliding block drive locating plate to lift, and through locating plate to limit the maximum opening of valve, solved the inconvenient control
valve opening problem of current.