• May , 19 2023

Valves are control components in fluid conveying systems that have functions such as cutoff, regulation, diversion, prevention of reverse flow, pressure stabilization, diversion, or overflow pressure relief. According to different classification standards, there are various types of valves, and each valve has its own unique features. 1. By valve type Block valve: Block valve, also known as closed ...

• Jun , 25 2023

Prohibit 1 Hydraulic test shall be carried out under Negative temperature during winter construction. Consequence: Due to the rapid freezing inside the pipe during the hydraulic test, the pipe freezes out. Measures: Try to conduct a water pressure test before winter construction, and after the test, blow the water clean, especially the water inside the valve must be removed completely, otherwise t...

• Jul , 06 2023

A check valve, also known as a check valve, is an automatic valve that relies on the pressure of the flowing medium in the pipeline to push the valve disc to close and open the valve. When the medium stops flowing, the check valve disc closes, effectively preventing the medium from flowing back in the pipeline, which plays a significant role in ensuring the safety of the pipeline. Check valves can...

• 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 , 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 , 07 2023

The flow rate and flow rate of a valve mainly depend on the diameter of the valve, and are also related to the resistance of the valve structure to the medium. At the same time, they are inherently related to various factors such as valve pressure, temperature, and medium concentration. The flow channel area of a valve is directly related to the flow rate and flow rate, which are interdependent qu...

• Oct , 24 2023

WCB carbon steel ASTM A216 Non corrosive applications, including water, oil, and gas, Temperature range: -30 ℃ to+425 ℃ LCB Low temperature carbon steel ASTM A352 Low temperature applications, with temperatures as low as -46 ℃ Cannot be used in situations with temperatures above+340 ℃ LC3 3.5% nickel steel ASTM A352 Low temperature applications, with temperatures as low as -101 ℃ Cannot be used in...