Tag Archives: Gas Burners

The valve can be used to control the flow of air, water, steam, and a variety of corrosive media, mud, oil, liquid metal and radioactive media and other types of fluid. Global valve manufacturing industry is mainly concentrated in North America, Europe, Japan, China and other regions. Europe and Japan and other economically developed areas to produce metallurgical, petrochemical, nuclear power valve to the main. East and Southeast Asia, China, India, by the demand for stretch, the drainage valve market is growing faster. The number of valve company in China in the world, but the smaller domestic drainage valve business as a whole, industry concentration is low. In 2011, the national valve output reached 5.9587 million tons, an increase of 14.5%.

Valve industry in recent years, rapid development of industry prospects, mainly the following aspects of favorable factors: 1. Investment in environmental protection has intensified. Increase as countries concerned about the intensity of the environmental protection and water resources, improve the utilization of water recycling, to increase the treatment of industrial water pollution, improve sewage discharge standards will certainly increase the demand for valves and environmental protection equipment; two. Urbanization is accelerating. With the continuous development of the economy, the domestic construction of drainage works have been gradually extended to the second and third tier cities, and extends to some villages and towns. Sewage treatment demand continues to expand, the drainage valve demand is increasing; Support of state policies. With step by step to accelerate the revitalization of equipment manufacturing industry policy, the common basis of the manufacturing sector will be further developed; Strong market demand. Sustained and stable development of state-owned economy, fixed investment will be gradually expanded; Global drain valve business is constantly influx to our country. With the resources of developed countries, labor costs and other factors, the manufacturing of drain valve to transfer to China, promote the prosperity and development of China s valve industry.

In recent years, China, India and other developing countries drainage valve industry made rapidly expanding exports and market share, the industry has become an important production base and the main sales market.

Valve production plant processing plant to the molding and compounding plant to provide raw materials, materials in the production sold to the valve factory molding processing plant or sold as a two valve.

Forming the raw materials needed in three ways: the new material provided by the valve supplier and compounding plant; valve by the valve factory processing plants (scrap, etc.); defective products provided by the secondary processing plant, etc. foreign goods, and waste. Its products are sold to the user of the packaging plant, assembly companies, materials processing can be carried out within the scope of their equipment allows the valve to use or sold to a valve factory.

Compounding plant purchased from the valve manufacturer valve, it sold to the molding factory and additive compounding, arising from the material can be reprocessed or sold to the valve factory in the factory equipment. Now a lot of molding factory direct their own ingredients, such as polyvinyl chloride molding processing plants; polyolefin ingredients, generally by the valve plant in the synthesis of conventional additives.

Secondary processing plant to get the valve semi-finished products (such as valve film, etc.) after it is processed into finished products (eg, valve bags, etc.), here produce materials provided to the molding factory or valve factory. Packing plants, assembly plants and marketing companies to get products from molding factory or secondary processing plants, and sold to the user after the packaging, assembly.

Valve factory valve material from a variety of industrial production processes, and its re-processing after the sale to the molding factory, and then the valve is generated by a small amount of material to use their own equipment.

The last link is the consumer of waste generated by consumers valve, collected as part of the valve and then to the valve factory, while the other, due to the valve technology and cost issues, become a nuisance waste valve, only for landfill or incineration.

      PSA program-controlled pneumatic valve, also known as program-controlled valve, mainly used for transformer or variable-

temperature gas separation devices, and require frequent switching of a variety of industrial fluid transfer applications. It is the gas

separation (PSA method) the most widely used device in the valve.
  
       Program-controlled pneumatic valves mainly by the cylinder part, stand part of the stuffing box, valve spool components. When

the controller is programmed according to pre-process the output of an electrical signal to a solenoid valve, the solenoid valve for the

action, so that air through the instrument with a pressure switch solenoid valve pneumatic actuator cylinder into the lower chamber

to promote the upward movement of the piston, the piston drive stem, stem poppet valve opens the valve; cut off solenoid valve

signal, so that the reverse operation to close the valve piston. This configuration is called normally closed valve. On the contrary,

should be made only in open-type solenoid valve with pneumatic actuator connection transform what can be achieved.
 
       PSA program-controlled pneumatic valve stem with the piston rod combined to ensure the bottom of the neutral; the valve-line

maintenance easier, improve maintenance efficiency. Streamlined flow design low flow resistance valve, precision and meticulous

casting surface, the deflector is particularly so greatly reduced flow resistance. Balance within the structure used to offset the media

pressure, so that the use of differential pressure valve has been improved, with good two-way bearing capacity.

       Program-controlled pneumatic valve V-shaped hollow filler, has a good self-sealing properties. The use of carbon fiber reinforced

filler filled PTFE material, add a friction reducing components to improve wear resistance. Packing group with spring compensation

structure, the filler can automatically compensate for wear. The valve design has a unique anti-erosion structures, make more than

95% of the gas film in a sealed anti-erosion erosion devices, and to guide the gas flow to a certain role in protecting the sealing film.