American Standard 1/2 Flange And National Standard 3/4 Valve
1. In the fluid pipeline system, Ball Valve is a control element, and its main function is to isolate equipment and pipeline systems, regulate flow, prevent backflow, regulate and discharge pressure. It 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. Since it is very important to choose the most suitable valve for the pipeline system, it is also very important to understand the characteristics of the valve and the steps and basis for selecting the valve.
2. Flange, also known as flange flange or flange. Flange is a part that connects pipes to each other and is used for connection between pipe ends; there are also flanges used on the inlet and outlet of equipment for connection between two equipment, such as reducer flanges. Flange connection or flange joint refers to a detachable connection in which flanges, gaskets and bolts are connected to each other as a group of combined sealing structures. Pipeline flange refers to the flange used for piping in pipeline devices, and the inlet and outlet flanges of the equipment used on equipment. There are holes on the flange, and bolts make the two flanges tightly connected. Gaskets are used to seal the flanges. Flanges are divided into threaded (threaded) flanges, welding flanges and clamp flanges. Flanges are used in pairs. Low-pressure pipelines can use threaded flanges, and welding flanges are used for pressures above four kilograms. Add a gasket between the two flanges and then tighten them with bolts. Flanges of different pressures have different thicknesses, and they use different bolts. When water pumps and valves are connected to pipelines, parts of these equipment are also made into corresponding flange shapes, also known as flange connections. All connecting parts that are bolted and closed around two planes are generally called "flanges", such as the connection of ventilation ducts. This type of parts can be called "flange parts". However, this connection is only a part of a device, such as the connection between a flange and a water pump, so it is not good to call the water pump a "flange part". Smaller ones such as valves can be called "flange parts".
