In view of the shortcomings of poor corrosion resistance and easy perforation of the shell of ordinary valves, according to the specific characteristics of the medium, the low-torque stop valve chooses corrosion-resistant steel (carbon steel with corrosion resistant alloy elements) on the body material, which can be resistant to ammonia gas and liquid ammonia corrosion, and the low temperature can reach -40°C to maximize the requirements of working conditions.

Low torque globe valve seal pair structure type: the use of ball type, flat type, seal automatic compensation, to achieve the double insurance effect, which the flat seal with soft and hard seal, sealing performance will be greatly improved, in the past, both sides are hard seal globe valve in the sealing surface wear will be leaked, and the soft and hard plane seal in the sealing side due to the medium or The damage of the valve seal will be made up, so the sealing performance of the torque stop valve is stable, no adhesive wear, and effectively solves the problem of poor sealing performance and easy leakage of ordinary valves for chemical pipelines.

The middle flange of the product adopts the mortise and groove sealing structure, which ensures the sealing of the middle flange is absolutely reliable even when the pressure of the pipeline fluctuates.

Multistage polytetrafluoroethylene sealing material is used in the upper sealing device to form a combined seal to ensure that the valve has no medium leakage in the stuffing box during the service life, eliminating the possibility of weak sealing of the ordinary valve stuffing box, easy leakage of the medium, and even causing accidents.

The low torque stop valve cover adopts an integrated structure (dark rod), which can ensure the reverse closing position of the valve cover and the concentricity of the filling bin, reducing the friction during the closing process of the stop valve, thereby reducing the torque.

Low torque stop valve under the type of transmission nut structure, effectively reduce the lever effect, reduce the heavy torque caused by the lever effect (ordinary stop valve nut is placed on the upper, the operating handwheel through the transmission distance from the center of the valve disc is very far)

Low torque globe valve sealing surface can be used a variety of sealing materials (nylon /PTFE/PPL/ fluorine rubber/babbitt and other good sealing performance materials) can also be made into hard sealing materials. When the sealing material is a soft sealing material, the closing torque and opening torque are only used to 1/3 of the ordinary stop valve.

Low torque stop valve internal structure design in accordance with the American standard design, effectively reduce the medium in the valve residence time, the valve seal can also be bidirectional seal, the valve can flow arbitrarily assembled on the pipeline, does not affect the flow rate of the medium and the sealing of the valve close