What is a cryogenic valve? A cryogenic valve is designed for media with temperatures ranging from -40°C to -196°C. It is primarily used in ethylene plants, LNG liquefaction facilities, LPG/LNG storage tanks and terminals, air separation units, petrochemical tail gas separation equipment, cryogenic storage tanks and tankers for liquid oxygen/nitrogen/argon/carbon dioxide, pressure swing adsorption oxygen…
In industrial fluid control systems, butterfly valves are widely used in petroleum, chemical, power, metallurgy, water treatment and other fields due to their simple structure, small size, light weight, easy operation and low flow resistance. According to the difference in the connection mode between the valve stem and the disc, butterfly valves are mainly divided…
SDV shutdown valve (SDV) also known as the emergency shutdown valve, ESV, ESD, or ESDV, is a critical safety device in process systems. In the event of an emergency such as leaks, overpressure, fires, etc., it receives signals from the central control system, activates promptly to cut off the hazard source, prevents the escalation of accidents,…
High-pressure hydrogenation gate valves are used to control the flow and pressure of hydrogen in hydrocracking and hydrofining processes. During production, high-pressure hydrogen reacts chemically with feedstock oil to improve the quality and yield of oil products. The stable performance of high-pressure hydrogenation gate valves ensures the stable transportation of high-pressure hydrogen, which in turn…
Ⅰ.Classification of plug valves. A plug valve opens and closes by rotating a plug around the axis inside the valve body’s central cavity. In pipelines, it is primarily used to cut off, distribute, and change the flow direction of media. An important characteristic of plug valves is their easy adaptation to multi-channel structures, allowing a…
What is a vacuum valve? A vacuum valve is a component in a vacuum system used to change the direction of gas flow, regulate gas flow rate, or cut off/connect pipelines. The closing member of a vacuum valve is sealed with a rubber or metal gasket. Valve seal is critical for vacuum valves: while materials…
Natural gas ball valves control the flow of gas, playing a crucial role in industrial pipeline systems, . However, internal leakage in ball valves occurs occasionally, which not only causes waste of resources but also poses potential safety hazards. So, how should internal leakage in natural gas ball valves be handled? Ⅰ. Hazards come from…
What is a balancing valve? The concept of the balancing valve. A balancing valve is a valve with special functions. In some industries, due to a large pressure difference or flow difference of the medium (various flowable media, such as gases, liquids, etc.) in different parts of the pipeline or container, in order to reduce…
What is a water well pump check valve? A water well pump check valve is a one way valve used to prevent the backflow of water, mainly installed at the outlet of the water well pump. Its main function is to ensure that water can only flow in one direction and prevent water from flowing…
Ⅰ.What is a swing check valve? The swing check valve is an automatic valve that realizes one-way flow control through the rotation of the valve disc around a pin. It is widely used in fields such as petroleum, chemical engineering, power, and water treatment. The following is a detailed analysis of its operation principle, structures,…
What is the function of the air compressor check valve? The compressor check valve is a kind of one way valve that prevents the reverse flow of gas.Its main function is to prevent the gas from flowing backward after the compressor stops operating, and thus avoid causing damage to the components of the compressor so…
Among the pipeline connection methods, socket welding and butt welding are two common connection methods, each with its own characteristics and suitable for different scenarios. What is the Socket Weld? Socket Weld is abbreviated as SW. For socket welding, it only requires inserting one pipe into the connecting end of another pipe, and the connection…
How is the service duration of the normal valve packing ? In valve design or usage experience, the packing of rising and falling valves is mostly asbestos packing, graphite packing or polytetrafluoroethylene V-shaped packing. However, these types of packing are restricted by the number of times the valve is opened and closed. That is, as…
The knife gate valve controls the flow and cut-off of the medium based on the vertical movement of the gate plate. When the valve needs to be closed, the driving device (manual, electric or pneumatic) drives the valve stem to move downward, making the gate plate move downward along the guide rail of the valve…
When selecting a check valve for a sewage lifting device, should you choose a plate check valve or a ball check valve? Let’s explore the characteristics, advantages, and disadvantages of these two types of check valves. Functions of check valves. First, check valves have three main functions: Characteristics of plate check valves. The plate check…
As a common type of valve, the lug style butterfly valve has several remarkable features, which make it widely applied in industrial pipeline systems. What is a lug style butterfly valve? I. Structural characteristics of the lug style butterfly valve. II. Performance characteristics of the lug style butterfly valve. III. Application Fields of the lug…
In a fire protection system, a jockey pump foot valve plays a crucial yet often under-the-radar role. To understand its significance, we need to first look at the context of the jockey pump itself. A jockey pump is an essential component within a fire protection system. Its primary function is to maintain the required pressure…
In a pipeline system, valves are basic control components. Their main functions are to isolate equipment and the pipeline system, regulate the flow rate, prevent backflow, and regulate and discharge pressure. They can be used to control the flow of various types of fluids, such as air, water, steam, various corrosive media, slurries, oils, liquid…
Gate valves shall be of the OS&Y or IS&Y type. OS&Y stands for Outside Screw and Yoke. When the handwheel of the OS&Y gate valve is rotated to open the valve, the valve stem will rise.Here are some examples of OS&Y gate valve specification parameters: ASME B16.10, API 602, ASTM A182-F304, TRIM.15-HF, CL150, BB and…
What is a pressure reducing valve? Why we need a pressure reducing valve? The pressure reducing valve, its abbreviation is PRV, also known as a regulator valve. It is a type of valve that reduces the inlet pressure to a required outlet pressure through adjustment, and relies on the energy of the medium itself to…
In industrial product procurement, both swing check valves and wafer check valves play important roles, but there are significant differences between them. The main differences between swing check valves and wafer check valves are as follows: Structure. Swing check valves: They have a hinged disc that swings open to allow forward flow and closes under…
In the world of industrial valves, the floating ball valve and the trunnion ball valve stand out as two widely-used types. These valves are essential for regulating fluid flow in industries such as oil and gas, chemical processing, and water treatment. Understanding their differences in detail is import for one to make the best decisions…
A inch and a half ball valve, that is a 1-1/2” ball valve refers to a ball valve with a pipeline diameter of 1and 1/2 inches, which is commonly used in household water pipes and air conditioners systems. I. The size of the 1-1/2” ball valve The 1-1/2” ball valve, actually means that the pipeline…
As two essential types of valve in industrial and civil pipeline systems, globe valves and gate valves both play a crucial role in controlling the flow of fluids. However, they have their own characteristics in regards of structure, operating principle, and applicable scenarios. Analysis of the similarities and differences between the two will provide us…