Swing check valve, also known as check (flow) valve, is an automatic valve used in one-way flow pipelines to prevent the medium from flowing back. It depends on the pressure of the medium flow in the pipeline to open or close the valve by itself. It can be divided into single valve type , Double …
The relationship between the opening of the butterfly valve and the flow rate basically changes linearly. If it is used to control flow, its flow characteristics are also closely related to the flow resistance of the piping. For example, two pipelines are installed with the same valve diameter and form, but the pipeline loss coefficient …
As the name implies, sanitary valves refer to valves that meet sanitary standards (medical standards or food standards). The valve body must meet the sanitary standards of stainless steel. All parts in contact with the medium are mirror polished. The polishing and cleanliness must meet the sanitary standards. The hygienic standards of valve components are …
Pneumatic ball valve working principle Pneumatic Ball Valve is composed of pneumatic actuator and ball valve, replacing manual operation, not only saves a lot of manpower and material resources, but also can control multi-ball valve. Pneumatic Ball Valve actuator to work with the valve body can quickly open and close, the speed can be cut …
Fire-proof and anti-static ball valve is a kind of pipelines that can be used for natural gas, artificial coal gas, liquefied gas, city gas and non-corrosive gas. It has anti-static and fire protection devices, that is, it is installed between the ball and the valve stem, the valve stem and the valve body. The conductive …
Cryogenic valves, as the name implies, are valves that can work in cryogenic and cryogenic conditions. The operating temperature is demarcated. Valves with operating temperatures below -40°C are usually called cryogenic valves, which are mainly used for gas liquefaction, For separation, transportation and storage equipment, the operating temperature can reach below -270℃. Currently, there are …
Valve leakage is very common in life and industrial production, and the impact is very large. In the light, it will cause waste or bring danger to life. For example, the leakage of tap water valve will lead to serious consequences, such as the chemical industry. Toxic, harmful, flammable, explosive and corrosive media leakage, etc., …
Valves often have some troublesome problems during use, for example, the valve is not closed tightly or tightly. What should I do? Under normal circumstances, if it is not tightly closed, first check to see if the valve is closed in place. If there is still leakage and cannot be sealed after it has been …
On September 26, the 14th Greater Bay Area Environmental Engineering Salon and Environmental Industry Forum was held and organized by COVNA Automation Co., Ltd and other 13 companies in Dongguan Yuelai Garden Hotel. In this regard, more than 10 media reported on the forum. As the largest environmental protection industry salon in South China, it …
Gate valve, also called gate valve, is mainly composed of valve body, bonnet, gate, valve stem, valve seat and sealing packing. It is one of the most common valve types in isolation valves. The main purpose of the gate valve is to cut off the fluid. For this reason, it is usually called a cut-off …