Stainless Steel 304 and 304L Used for Vavles
- Apr 08, 2022
- Hits: 22
1. What is stainless steel? Stainless steel is a type of steel. Steel refers to steel containing less than 2% of carbon, and steel with a carbon contect of more than 2% is iron. The addition of chromium...
Mechanical Traps
- Mar 29, 2022
- Hits: 24
The mechanical traps use the density difference between the condensed water and the steam, and through the change of the condensed water level, the float lifts and drives the disc of the valve to...
Abnormal Opening & Closing and Leakages of Safety Valves
- Mar 07, 2022
- Hits: 29
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...
Methods and Inspection of Non-destructive Inspection after Welding Repair of Valves
- Feb 27, 2022
- Hits: 28
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....
Common Materials for Valve Bodies and Their Heat Treatments
- Feb 10, 2022
- Hits: 61
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...
Common Materials Used for Valve Housings
- Jan 25, 2022
- Hits: 24
Common materials used for valve housings Common housings materials for valves Standards Applicable temperature/℃ Applicable pressure/MPa Applicable media Gray cast iron -15 to...
The Development & Market Prospects of Valves for Natural Gas Pipelines
- Jan 14, 2022
- Hits: 23
With the continuous innovation of valves used for natural gas pipelines, while traditional pipeline valves continue to play their roles, many valves with new structures and new functions are...
The Structural Advantages and Standards of Ball Valves
- Dec 24, 2021
- Hits: 36
Items Names Structural advantages Design Standards 1 Internally threaded ball valves, socket welded ball valves, integral ball valves and split ball valves 1. Reduced bores or...
Requirements of API 6D and API 608 Concerning Ball Valves (Part Three)
- Dec 08, 2021
- Hits: 97
2.4 Requirements for installation and maintenance API 608 ball valves belong to process pipeline ball valves. Generally, they can be installed in the factory. If the construction site...
Requirements of API 6D and API 608 Concerning Ball Valves (Part Two)
- Nov 29, 2021
- Hits: 687
In addition to the functions of draining and venting of the API 6D ball valve, it should also have a central cavity overpressure relief function. The DIB-2 valve seat can be used to release the overpressure...
Requirements of API 6D and API 608 Concerning Ball Valves (Part One)
- Nov 15, 2021
- Hits: 761
Combine engineering practice experience and clarify the difference and connection between API 6D pipeline ball valves and API 608 ball valves in terms of structural design, performance requirements and test...
Technical Requirements for Purchasing Valves
- Oct 26, 2021
- Hits: 37
Specifications and categories of valves 1. The valve's model should be marked based on requirements of the national standard. If it is a corporate standard, the relevant description...