Metal Seal Gate Valves

Hanno Valve Metal Seal Gate Valves play a vital role in industrial production because of their excellent sealing performance, high temperature and pressure resistance, strong corrosion resistance, long service life and other advantages.

Is it better to use a hard seal or a soft seal for stainless steel concealed stem gate valves?

As for whether a hard seal or a soft seal is better, it mainly depends on the medium used. If it is warm water, a soft seal is generally used. If there are impurities in high-temperature cooperation, a hard seal is generally recommended. What is the difference between the two? Let's analyze it in detail and hope it will be helpful to your question. If you are satisfied with the answer, please kindly give a thumbs up to Weidun VTON.

Simply put, a soft seal is a seal between metals and non metals, such as nylon/tetrafluoroethylene, while a hard seal is a seal between metals;

Soft sealed gate valves and hard sealed gate valves are sealing materials for the valve seat. Hard sealed gate valves are made of precision machined valve seat materials to ensure the accuracy of the fit with the valve core (ball), usually made of stainless steel and copper Soft seal refers to the non-metallic sealing material embedded on the valve seat. Due to the elasticity of the soft sealing material, the requirements for processing accuracy are relatively low compared to hard seals We will describe the differences between imported soft seal gate valves and imported hard seal gate valves based on the characteristics of Weidun VTON.‌‌‌‌‌‌

Materials