Hebei Huahui Valve Co., Ltd

  As a   Butterfly Valve Supplier , share with you. Butterfly valves are suitable for flow regulation. Since the pressure loss of the butterfly valve in the pipeline is relatively large, the robustness of the butterfly plate to withstand the pressure of the pipeline medium when it is closed should also be considered. In addition, it is necessary to consider the limitation of the working temperature of the elastic valve seat material at high temperature. The structural length and overall height of the butterfly valve are small, the opening and closing speed is fast, and it has good fluid control characteristics. The structural principle of the butterfly valve is most suitable for making large-diameter valves. When a butterfly valve is required to control flow, the most important thing is to correctly select the size and type of the butterfly valve so that it can work properly and effectively. Butterfly Valve Generally, in throttling, regulating control and mud media, the struct...

  As a   Gate Valve Supplier , share with you. Many people think that the gate valve will not rust, but in fact it is not the case. It will rust under certain conditions. For example, stainless steel is prone to rust in weak media such as the atmosphere and water or oxidizing media such as nitric acid. If you don't want it to rust, you should place it in a dry environment, and you should also pay attention to maintaining it. DIN F4 Gate Valve If the stainless steel gate valve comes into contact with corrosive substances such as strong acids and alkalis, it is easy to cause corrosion. If you want to avoid this, then the following practices can be referred to. 1. Frequently clean and wipe the surface of the gate valve. If there is any attachment on the surface, clean it in time to avoid corrosion of the attachment and rust. 2. If it is used in coastal areas, it is necessary to use corrosive 316 stainless steel gate valve. The product of this material has the strongest resistance...

  As a   Ball Check Valve Leading Supplier , share with you. Installation method 1. Swing check valve: The disc of the swing check valve is disc-shaped, and it rotates around the shaft of the valve seat passage. Because the inner passage of the valve is streamlined, the flow resistance is smaller than that of the lift check valve. It is suitable for low flow velocity and large diameter occasions where the flow does not change frequently, but it is not suitable for pulsating flow, and its sealing performance is not as good as the lift type. Swing check valves are divided into three types: single valve, double valve and multi-half valve. These three types are mainly classified according to the valve diameter. The purpose is to prevent the medium from stopping or flowing backwards and weaken the hydraulic shock. 2. Lifting check valve: a check valve whose disc slides along the vertical centerline of the valve body. The lifting check valve can only be installed on a horizontal pip...

  As a   Ball Check Valve Leading Supplier , share with you. Ductile Iron Check Valve (1) The quality control of the main body blank. All parts of this valve are forgings. The forging is carried out in strict accordance with the forging process regulations and process cards. The initial forging temperature, final forging temperature, deformation degree and deformation speed are strictly controlled, and the process regulations stipulate The cooling method performs cooling. Chemical composition analysis, mechanical property test, intergranular corrosion test, metallographic analysis of the forged product are carried out. After analysis, test and determination, they all meet the corresponding standards. The quality of forgings is guaranteed by ultrasonic inspection and liquid penetration inspection. Forgings are 100% ultrasonically inspected and evaluated in accordance with RCC-M requirements, and liquid penetration inspection and evaluation are performed on all surfaces of the f...