Xiamen Landee Valve weekly refreshes Company News, Valve Events & Shows, Production Releases and Valve Industry News for giving updated information.
Posted: 08/15/2017 13:18:10 Hits: 3
High-temperature Grade III
When working temperatures of valves are between 650℃ and 730℃, the valves are called the high-temperature Grade III valves, also named the high-temperature PIII Grade valves. They are mainly used for the heavy oil catalytic cracking units of refineries. The main materi...
Posted: 08/11/2017 12:40:58 Hits: 12
High Temperature Working Conditions
Valves used for the high temperature working conditions mainly refer to the high temperature valves applied to the refineries.
Sub-high temperatures refer to the working temperatures of valves between 325℃ and 425℃. When the m...
Posted: 07/25/2017 11:18:19 Hits: 11
There are many types of globe valves' clacks such as the flat plate type, the plug type, the cone (needle) type, the ball type, etc. Characteristics and selection principles of globe valves with various clacks are different, and today we mainly introduce the above four clack types...
Posted: 07/12/2017 10:38:13 Hits: 15
Principles of selecting gate valves
The gate valve should be the first choice when shut-off valves need to be used for pipelines.
1. Although gate valves are not restricted by the temperature as well as pressure, for gate valves with large nominal diameters and gate valves used under the medium and...
Posted: 06/26/2017 09:05:59 Hits: 23
In the 1930s, the butterfly valve was invented in United States. It was introduced into Japan in the 1950s and was not widely used until the 1960s. The butterfly valve was promoted in China in the 1970s. At present, the butterfly valve with DN300 has gradually replaced ...
Posted: 06/10/2017 13:03:20 Hits: 14
The high temperature conditions here refer to the conditions when the medium temperatures are equal to or higher than the starting creep temperatures of the metallic materials. The creep temperature of carbon steel is about 400℃; chromium molybdenum alloy steel 450℃...
Posted: 05/27/2017 08:34:07 Hits: 12
The balls of floating ball valves are floating. Under the effects of the medium pressure, the ball can take a certain displacement and be pressed against the outlet side of the seal, to ensure that the outlet end is sealed and the seal is a single-side fo...
Posted: 05/05/2017 15:38:54 Hits: 39
Although there is still a gap between China's valve industry and the international advanced level nowadays, China's valve industry has already gone through the simple copy and absorption period. Take globe valves as an example, manufacturers should look for...
Posted: 02/20/2017 11:58:49 Hits: 34
China's valve industry is able to produce a dozen of products, such as gate valve, globe valve, ball valve, butterfly valve, safety valve, check valve, throttle valve, plug valve, reducing valve, diaphragm valve, drain valve, emergency cut-off valve, etc. These valves can be used in the hig...
Posted: 02/20/2017 11:53:42 Hits: 27
Chinese control valves began from 1960s, and we could only produce 600 kinds of valves with 2700 specifications before 1980s. We lacked the ability of designing and manufacturing valves with high parameter and technology. In order to meet the requirement of high parameter and technology valves in th...