Methods & Inspection of Non-destructive Inspection after Welding Repair of Valves
- Mar 09, 2022
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In the forging process of valves, there will occasionally be defects such as gas holes, porosity, and impurities, which affect the normal use of the castings, and are usually repaired by welding....
Materials Used for Valves and Their Heat Treatments
- Mar 09, 2022
- Hits: 15
The commonly used materials for valve bodies are as follows: 1. Gray cast iron: it is suitable for low-pressure valves with working temperatures between -15℃ and +200℃ and nominal pressure...
Incorrect operation causes the safety valves leak
- Mar 09, 2022
- Hits: 16
Opening and closing over set pressure means that the equipment is opened or closed over its set pressure. In this case, the overload protection function of the safety valve loses, and the reasons...
Structural Analysis & Design of a New Type of Ultra-low Temperature Floating Ball Valve (Part Two)
- Dec 01, 2021
- Hits: 50
2. A new type of structural design of the ultra-low temperature floating ball valve Given that there are disadvantages for the current common floating ball valve structure, a...
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Structural Analysis & Design of a New Type of Ultra-low Temperature Floating Ball Valve (Part One)
- Dec 01, 2021
- Hits: 49
Abstract: A new type of structural design plan of the ultra-low temperature floating ball valve was proposed based on the structural analysis of the existing common ultra-low temperature floating...
Non-lubricated Plug Valve VS Lubricated Plug Valve
- Oct 19, 2021
- Hits: 420
Plug Valve: An Isolation Valve Table of contents: 1. Non-Lubricated Plug Valve 2. Lubricated Plug Valve 3. Eccentric Plug Valve 4. Expanding Plug Valve A plug valve is a...
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The Installation Requirements for Cryogenic Valves
- Oct 09, 2021
- Hits: 440
Because of the special structure of cryogenic valves, the installation of cryogenic valves also has special requirements. The direction of the valve stem must be within a vertical angle of 45 degrees...
Low-temperature Physical Property Analysis of Key Materials of Valves
- Oct 09, 2021
- Hits: 31
In order to study the performance, rules of size changes at low temperatures, changes of microstructure, and cracking of surfacing layers of the valve body's material...
What’s the difference between metal seat valves and soft seat valves?
- Aug 27, 2021
- Hits: 38
When choosing an industrial valve, you will face numerous choices. Available materials, proper size, and design (1, 2, or 3 pieces, end connections, etc.) are the key factors to decide which type of valve...