• Jul , 27 2023

Classification Divided by power Automatic valve: A valve that operates by relying on the force of the medium itself. Such as check valves, pressure reducing valves, drain valves, safety valves, etc. Drive valve: a valve that relies on external forces such as manpower, electricity, fluid power, and pneumatic power to operate. Such as globe valves, throttle valves, gate valves, butterfly valves, bal...

• Jul , 28 2023

Shut-off valve Also known as a shut-off valve, it belongs to the forced sealing type valve and is a type of shut-off valve. There are three types of connection methods: flange connection, screw connection, and welding connection. The "three modernizations" of valves in our country once stipulated that the flow direction of shut-off valves should be from top to bottom, so there is directional insta...

• Aug , 08 2023

 1、 Structure and characteristics of one piece ball valve One piece ball valve is called a one piece ball valve because the valve body adopts an integral structure. Its appearance is small and its weight is light. The ball core, valve seat, and valve stem are installed from the flow channel on one side of the valve body. Due to limitations in the flow channel size of the valve body, the full ...

• Aug , 15 2023

Ball valve structure There are many types of structures for ball valves, but they are basically the same. They are all round ball cores with opening and closing parts, mainly composed of valve seats, balls, sealing rings, valve stems, and other driving devices. The valve can be opened and closed by rotating the valve stem 90 degrees. They are used in pipelines to shut off, distribute, regulate flo...

• Aug , 24 2023

Valves are the most common equipment in chemical enterprises. Installing valves may seem easy, but if not implemented according to relevant technologies, it can lead to safety accidents. Today, I will share some experience and knowledge about valve installation with you. Taboo 1 Consequence: Due to the rapid freezing inside the pipe during the hydraulic test, the pipe freezes out. Measures: Try to...

• Aug , 29 2023

The classification of valves can be divided by function, material, structure, pressure, diameter, connection method, and transmission method. The classification based on valve material is a common method of classification. According to the material of the valve body, valves can be divided into metal valves, non-metallic valves, and metal valve body lined valves. And metal valves are the most commo...

• Sep , 07 2023

The installation and maintenance of butterfly valves should pay attention to the following matters: During installation, the valve disc should be stopped in the closed position. 2. The opening position should be determined according to the rotation angle of the butterfly plate. 3. For butterfly valves with bypass valves, the bypass valve should be opened before opening. 4. Installation should be c...

• Sep , 12 2023

Adjustment of safety valve opening pressure (set pressure): Within the specified working pressure range, the opening pressure can be adjusted by rotating the adjusting screw and changing the pre compression amount of the spring. After removing the valve cover and loosening the locking nut, the adjustment screw can be adjusted. Firstly, increase the inlet pressure to make the valve jump once. If th...

• Sep , 21 2023

Ball valve structure There are many types of structures for ball valves, but they are basically the same. They are all round ball cores with opening and closing parts, mainly composed of valve seats, balls, sealing rings, valve stems, and other driving devices. The valve can be opened and closed by rotating the valve stem 90 degrees. They are used in pipelines to shut off, distribute, regulate flo...