Globe valve, also known as cut-off valve, is a mandatory sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from under the valve disc, the resistance that the operating force needs to overcome is the friction force between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter of the valve should be large, otherwise the failure of the top of the valve stem will occur. According to the connection method, it is divided into three types: flange connection, thread connection and welding connection. After the appearance of the self-sealing valve, the medium flow direction of the globe valve is changed from the top of the valve disc into the valve cavity. At this time, under the action of the medium pressure, the force to close the valve is small, but the force to open the valve is large, and the diameter of the valve stem can be adjusted accordingly. decrease. At the same time, under the action of the medium, this form of valve is also tighter. my country's valve "Three Chemicals" once stipulated that the flow direction of the globe valve should be from top to bottom. When the globe valve is opened, the opening height of the valve disc is 25% to 30% of the nominal diameter. The flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the fully open position of the globe valve should be determined by the stroke of the valve disc. Shut-Off Valve,Shutoff Valve,Automatic Shut Off Valve,Auto Shut Off Valve Jiangsu Qiantu Trading Co., Ltd. , https://www.pumpqt.com
Times New Materials states that after this capital increase, the company will become the largest shareholder of Lectra Rubber and will combine its financial accounting statements in accordance with relevant regulations to increase its main business income. At the same time, with the existing military product supply qualification of Lectra Rubber and the advantage of the market channels of the One Machine Group, we will develop all-round cooperation with One Machine Group to realize the core technology and business of vibration-reducing and noise-reducing elastic components in the new era, and to new industries such as military and heavy trucks. The rapid expansion of the field, while expanding the sales of special engineering plastics, damping materials and other products.
Increased capital, Lectra Rubber and new materials in the era to explore new fields of business
In the new era, the company plans to develop a strong vibration-reducing and noise-reducing elastic component business and expand new application fields such as military and heavy-duty trucks. The company signed a capital increase and share expansion agreement with Inner Mongolia First Machine Group and Qingdao Kaishi yesterday. The company unilaterally Plastic injection of 45,107,700 yuan in cash, after the increase in capital, the company holds a 49% stake in Lectra Rubber and Plastics.