1. Handle with anti retreat screws for better torque transmission.2.Blue, green, and red dust covers are used to distinguish globe valves, balance valves, and drain/test valves, and to prevent dust and impurities from entering the valve stem and affecting sealing.
3.Compression nut is used to push and compress the packing, causing it to deform and expand, forming a seal with the valve stem and valve seat. When there is slight leakage, it can also be used for secondary or multiple adjustments.
4.The valve stem adopts rolling thread to improve the surface hardness of the thread, making it more wear-resistant and extending the service life of the valve stem.
5.Lock the nut to provide reliable locking force and prevent the packing from losing its sealing function due to vibration loosening of the clamping nut.
6.The sealing part of the valve stem is processed by extrusion, with a surface roughness of Ra0.1, which reduces friction with the packing and improves the service life of the valve stem and packing.
7.Metal washers provide no rotational thrust and reduce packing damage caused by rotational friction.
8.Design PTFE/flexible graphite packing to prevent medium from entering and corroding valve stem threads.
9.When the valve is fully open, the back conical surface of the valve stem forms linear contact with the valve seat, providing auxiliary sealing for the valve stem.
10.Dual phase steel cone head, improving higher hardness and avoiding damage to the cone head after multiple uses; The tail ball head design provides non rotating push pressure, and the head cone design makes the valve body hole shape sealed.