Pressure relief valves have been around for hundreds of years, and they have always played a very important role as the last line of defense to protect life and property in the event of an overpressure event. This article will introduce three types of pressure relief valves in three parts. In the first article, we will introduce the basic operation of spring-loaded safety relief valves. In future…

By rotating the ball 90° or 180°, the connection relationship between its internal channel and the four valve body ports is changed to achieve the switching, confluence or diversion of the fluid flow direction.…

Flow meter valve group: front and rear cut-off valves are installed before and after the flow meter, and bypass valves are used to bridge the front and rear cut-off valves. The front and rear cut-off valves use stop valves or gate valves, and the bypass valve uses a throttle valve to accurately adjust the flow.…

The throttle valve is an important hydraulic control component that can control the movement speed of the actuator by changing the flow rate of the liquid. This valve is widely used in many industrial fields, including machine tools, engineering machinery, aerospace, plastic machinery and metallurgical equipment. This article will introduce in detail the application and role of throttle valves in …

Differences and differences between pressure reducing valve, safety valve, pressure stabilizing valve and pressure relief valve…

At first, Teflon in a narrow sense (Teflon: Chinese translation homophonic Te Iron F Fluorine Lon Dragon) was a trademark of DuPont, used for a series of fluoropolymer products based on polytetrafluoroethylene (PTFE). Polytetrafluoroethylene is a synthetic polymer compound formed by the polymerization of tetrafluoroethylene and is known as the "King of Plastics" for its excellent performance. Nowa…

1. Surface treatment: Clean, polish, degrease and other treatments on the valve surface to remove surface dirt and impurities, improve surface flatness and roughness, and facilitate the adhesion of subsequent coatings. 2. Coating protection: Apply a layer of corrosion-resistant coating, such as epoxy resin, polyurethane, etc., on the surface of the valve to form a protective film to block the …

Cast iron valves are usually made of high-quality gray cast iron or ductile iron, which have good mechanical properties, wear resistance and corrosion resistance. Cast iron valves have a long service life at normal temperature and pressure, and have low requirements for fluid media, and can adapt to a variety of environments and usage scenarios.…