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Analysis of heat treatment methods about LCB and LCC

LCB and LCC are kinds of the low temperature ferrite steel often used on ball valve. Low-temperature steel, according to the requirements of ASTM A352 / A352M, is suitable for the condition from -46℃0℃. The requirement of the low temperature performance is higher, because the mechanical performance of C-Mn steel will be significantly reduced in the low temperature working condition. In order to make LCB and LCC satisfy the requirement of ASTM standard, the heat treatment method has some particularity and difficulty.

Introduction of Double seal-Double block and bleed valves

              Double seal-Double block and bleed valves is a kind of method to get the purpose of totally cut off both ends of pipeline through two cut-off valves and one bleed valve between the two cut-off valves. And it can enhance the security of the system by shutting down two main valves and opening bleeder valve. If the first valve is leaking, the leaking medium can be led out by the return valve.


What Is a Top Entry Ball Valve

           Top entry ball valve is popular during the developing process of various industries. Installation or maintenance of Top entry ball valve is very convenient and easy, because it can be installed on the surfaces of the pipeline. When the valve fails to work, all we need is just removing the attaching nuts, bolts or screws, checking for the fault and repairing the valve seat, body or other parts on the line, which is of great efficiency and can effectively reduce the loss for the manufacturing process. Of course, there is no doubt that the valve has been widely used for oil and gas pipelines for industries or systems such as the oil production, oil refining, petrochemical, chemical, chemical fiber, metallurgy, electricity, nuclear power, food or paper industry.


Brief introduction of Fully Welded ball valve


The construction of fully welded ball valve:

The improvement of processing technology of metal hard seal ball valve

The hardening problem of ball and seat surface
In the processing technology development of metal hard seal ball valve, for the hardening problem of ball and seat surface, the earliest solution is to adopt the ways of hard chromium plating surface and surface infiltration nitrogen treatment, surface hardening heat treatment and surfacing Stellite hard alloy. But this several surface hardening technology is rarely selected in the current metal hard seal ball valve processing. More effective supersonic flame sprays technology (HVOF), laser cladding and nickel-based alloy thermal spraying technology replaced. Three new surface hardening technologies have different advantages and disadvantages in the specific application process. Hardening effect and the specific construction index is different. so in the course of metal hard seal ball valve processing, we shall choose the reasonable surface hardening technology to carry out actual application according to the working conditions of ball valve, hardness of fluid medium and the technological level of ball valve processing company, in order to meet the quality requirement of coal chemical production for ball valve.

Ball Valve History & Mystery


Ball Valve mystery
Ball Valve has a long history, which may not be so outstanding; however it has its own mystery. Nowadays the Ball Valve is indispensable in most industry. For example, the Ball Valve is important to the petroleum industry, water, electric power, chemical, paper, pharmaceuticals, food, steel and other fields. And we can’t enjoy a good life without ball valves. The ball valve is going to be more and more significant to our life and economy. We haven’t stopped the step to the development of the ball valve. The history and mystery of ball valve is moving on. 

The introduction of Floating Ball Valve


Floating Ball Valve has a floating ball without fixed axis. Under the pressure of medium, the ball can have certain displacement and tightly push on the seal surface of exit, which ensures the seal of outlet.

High-pressure ball valve


The definition of high-pressure ball valve
High-pressure ball valve is defined in the GB/T21465-2008 "valve term" as: the valve that its ball is driven by valve stem, and carries on the rotary motion around the axis of stem.

Ball valve with anti-static structure getting popular


Ball valve comes up in the 1950s. With the rapid development of science and technology and the constant improvement of production process and product structure, ball valve has quickly become one of the main valves in just 40 years. In the western developed countries, the use of ball valve is constantly increasing year by year. The ball valve is widely used in oil refining, long distance pipeline industry, chemical industry, paper making, pharmacy, water conservancy, electric power, the municipal administration, the steel industry and so on in our country which plays an important role in the national economy. However, with the higher technology request of the ball valve production, more and more engineering projects need the ball valve with anti-static function.

Anti-Static Device of Ball Valves


Tipvalve can manufacture the Ball Valves with Anti-static Device, and the Anti-static design is an important part in the process of producing. The Anti-static design of ball valves ensures an electrical continuity (which plays an important role in reducing static electricity which may exist in the ball or stem of the valve) between valve ball, stem, and body


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