Hebei Huahui Valve Co., Ltd

  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...

  As a   Gate Valve Supplier , share with you. Butterfly valves are suitable for flow regulation. Because 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 closing should also be considered. In addition, the working temperature limit of the elastic seat material must be considered at high temperatures. The structure length and overall height of the   Gate Valve   are small, the opening and closing speed is fast, and it has good fluid control characteristics. The structure principle of the butterfly valve is most suitable for making large-diameter valves. When the butterfly valve is required for flow control, the most important thing is to correctly select the size and type of the butterfly valve so that it can work properly and effectively. DIN F5 Gate Valve The valve can be used to control the flow of various types of fluids such as air, water, ste...

  As a   Butterfly Valve Leading Manufacturer , share with you. The rubber elastomer in the butterfly valve will tear, wear, aging, perforate or even fall off during continuous use. However, the traditional thermal vulcanization process is difficult to meet the needs of on-site repair. Special equipment must be used for repair, which consumes a lot of heat and electricity, which is time-consuming and labor-intensive. Nowadays, the method of polymer composite materials is gradually used to replace the traditional methods, among which the most applied is the Fuschlan technology system. The superior adhesion and excellent anti-wear and tear-resistant properties of its products ensure that the service life of the new component is reached or exceeded after repair, and the downtime is greatly reduced. Flange Butterfly Valve Installation and maintenance: 1. During installation, the valve disc should be stopped in the closed position. 2. The opening position should be determined accor...

  As a   Butterfly Valve Supplier , share with you. Butterfly valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly cuts off and throttles on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. Butterfly Valve Butterfly Valve  is 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 closin...

  As a   Butterfly Valve Supplier , share with you. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. The butterfly valve is simple in structure, small in size and light in weight. It consists of only a few parts, and can be opened and closed quickly by rotating 90°. The operation is simple. At the same time, the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance when the medium flows through the valve body, so the pressure drop produced by the valve is small, so it has better flow control characteristics. Butterfly Valve If the butterfly valve is required to be used as a flow control, the main thing is to correctly select the size and type of the valve. The structure principle of the butterfly valve is especially suitable for making large diameter valves. Commonly used butterfly valves include wafer butterfly valves and fla...