PSB Bonnet Gate Valve

PSB Bonnet Gate Valve

When the medium pressure rises, the valve cover is moved upward by the medium pressure, and the sealing specific pressure between the valve cover and the wedge gasket, and the valve body and the wedge gasket, gradually increases with the increase of pressure. In the self-tight seal, the working sealing pressure on the sealing surface is synthesized by two parts: one is the pre-tight sealing pressure, and the other is the pressure formed by the medium pressure. It should be emphasized that in the self-tight seal, the medium pressure always tends to increase the pre-tight seal pressure to increase the sealing performance. The higher the medium pressure is, the higher the working sealing pressure is and the more sealing performance is. According to this feature, self-tight seal as a high pressure sealing technology, commonly used in high temperature, high pressure large diameter valves.

Company Strength

Zhejiang Huachi Co., Ltd is a professional production and sales of high, medium and low pressure valve enterprises, the leading products are ball valves, flat gate valves, gate valves, globe valves, check valves, butterfly valves, safety valves, gas control valves and other industrial valves and their supporting equipment, widely used in petroleum, petrochemical, natural gas, food, metallurgy, electric power, water supply and drainage and other fields.

（1）Before the order can be confirmed finally,we would strictly check the material,color,dimension of the sample step by step.
（2）We salesman ,also as a order follower,would trace every phase of production from the beginning.
（3）We have a QC team ,every product would be checked by them before packed.
（4）We would try our best to help clients solve problems when they occurred.

After Sales Service

Any small problem happening in our products, will be solved at the most prompt time. We always offer relative technical support.
Quick response, all your inquire will be replied within 24 hours.