26
2023-09

Hard sealing rod function

The equipment and protection of hard sealed rods should pay attention to the following matters: it is prohibited to use handwheels, handles, and transmission mechanisms for lifting, and collision is prohibited. The double gate valve should be straight (i.e. the hard sealing rod is in the s···

26
2023-09

Process characteristics of valve stem

During the opening and closing process of the valve, the valve stem bears tensile, compressive, and torsional forces, and comes into direct contact with the medium. At the same time, the filler also has relative frictional motion, which has sufficient strength, good impact toughness, wear ···

26
2023-09

The main cause of valve stem deformation

The valve stem is mainly able to withstand pressure and can be well insulated, and is not easy to rot and rust. It has a double-sided sealing function, which is more wear-resistant and has a longer service life. So, there are several reasons for valve stem fracture or deformation:The broke···

26
2023-09

Protective measures for stainless steel valve stems that are prone to vibration

There are three main processing methods for trapezoidal threads of stainless steel valve stems: turning threads, whirlwind milling threads, and rolling threads. Horizontal lathe cutting trapezoidal threads is a widely used method. The manual tools used for turning threads are simple, with ···

26
2023-09

What are the overview and types of valve stems

The valve stem is not only a moving part and a force bearing part, but also a sealing part during valve opening and closing. Therefore, it will be subject to the impact and corrosion of the medium, as well as the friction with the filler. So when selecting valve stem materials, we must ens···

26
2023-09

Function of valve stem fittings

The new valve stem processing technology adopts self-made forging and cold extrusion technology, which has high thread strength and precision. The concentricity of the thread part and the polishing rod part is the same, which overcomes the problems of easy deformation, easy deformation and···