Promoting Green Casting is the Development Trend of Valve Casting Industry in the Future

At present, people have very high quality requirements for precision valve steel castings, so during the process , valve manufacturers also pay great attention to the selection of process methods and production processes, so as to ensure that the production of steel castings can reach higher application standards. First of all, we should be more cautious when choosing raw materials. Although many steel castings do not have much difference in appearance, due to the different selection of raw materials, there will be differences in quality and service life of steel castings in the process of using, so the selection method of raw materials needs special attention.

Making a correct and reasonable production process is the key to reduce the cost of resin sand casting valve. Whether it is reasonable or not directly affects the yield, quality and cost of castings. Continue reading “Promoting Green Casting is the Development Trend of Valve Casting Industry in the Future”

Valve part-Rubber factory-Visit

To improve valve quality and strength relation with supplier,  Last week  we visit and assess valve parts-rubber factory, huami rubber technology , Well equipped and certified  : ISO9001 ISO14001 IATF16949 by TUV , OHSAS18001 BY BS  and other china Military certification, industry qualification.  Have many application for most main china automobile factory and CRRC (china high speed train)and other high end Military industry.

Rubber factory-Production workshop

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Performance comparison of zirconia and alumina ceramics

Zirconia ceramics and alumina ceramic materials with specific performance comparison:

Zirconia ceramic ball valve -V-port
Molecular Formula Density kg/m^3 Hardness HRC Flexural Strength MPa Fracture Toughness MPa 1/2 Water Absorption
Alumina ceramics AL2O3 3.5 86-88 300-400 4 0
Zirconia ceramics ZrO2 5.9 88-89 900-1000 12 0

Alumina ceramic

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wafer-Lug stainless steel manual knife gate valve and wafer-flange carbon steel Pneumatic Knife gate valve

The wide application of stainless steel knife gate valve results from its own characteristics. Firstly, it has good sealing effect and good elasticity of U-type seal gasket; secondly, its full-diameter design has strong passing ability; thirdly, like an knife, it has good breaking effect and can effectively solve the leakage phenomenon after the breaking of the gate containing block, particle and fiber medium; Forth, the knife gate valve are light weight and small room needed; finally, it does not need to remove the valve because of its convenient maintenance without replace the valve seal.

SGV order for Europe plant: Stainless steel knife gate and Carbon steel knife gate valve are bonnet less design: refer MSS SP81 or JB/T8691 (Similar with MSS SP 81 but have more clear definition)

Well protected Valve Packing , Suitable for long distance air and sea transportation.

The order have 2 part:
Wafer-lug /wafer flanged type Risting stem Pneumatic Knife gate valve

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Several Reasons  and Preventive Measures for Flame and Explosion of Oxygen Valve, Pipeline Valve 

Several Reasons  and Preventive Measures  for Flame and Explosion of Oxygen Valve, Pipeline Valve 

With the increase of oxygen consumption, oxygen pipelines are used for transport large oxygen. Owing to the long pipeline and wide distribution, combined with the quick opening or quick closing of valves, accidents of combustion and explosion of oxygen pipelines and valves occur from time to time. Therefore, it is essential to comprehensively analyze the hidden dangers and dangers of oxygen pipelines and cold valves and take corresponding measures.

Oxygen Valve sets include oil-free bronze ball valve, stainless steel Axial check valve, stainless steel Axial flow control valve : Valve Packing box/neck should be insulate with site air

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Environmental cupola is still energetic: STATE OF THE U.S. CUPOLA INDUSTRY

In recent years, the requirement of energy saving and emission reduction has been increasing and strictly implemented, so many people believe that the application of cupola is declining day by day, and it is an irreversible trend to be replaced by induction furnace. In reality, a large number of cupolas have been banned, and the wind that cupolas will be completely withdrawn from the field of foundry is also very noisy.

Is the cupola really useless? Where on earth has it been criticized by the public? Faced with a comprehensive ban, who in the world did the cupola provoke?

Environmental cupola 

Cancellation of cupolas in SMEs does not affect their importance

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Valve weld Skill improved: fish scale weld,TIG( Tungsten invert gas welding)

Welding Skill is very important for Some valve manufacture. Sangong’s pursuit of improving welding technology never stops. Last weekend, the Sangong welder have an deep communication with other skilled welder engineer after attend an welder exam local.

High pressure Power Plant valve fish scale weld-TIG

For the fish scale weld showed in competition,also named TIG( Tungsten invert gas welding), is a kind of welding technology.  Continue reading “Valve weld Skill improved: fish scale weld,TIG( Tungsten invert gas welding)”

Technical Requirements for Boiler Forging Valves-Raw Material

Technical Requirements for Boiler Forging Valves 

1. Forging raw material should be accompanied by quality certificates (also known as quality assurance certificates). Supplementary inspection should be carried out when there is no quality assurance certificate. Only those who are qualified can be put into production.

2. Forging pieces (referring to raw materials for forging) may be rolled (e.g. round steel) or ingots. If the forged blank is rolled, its surface quality and chemical properties will be improved.

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cryogenic application of metal sealing butterfly valve

Cryogenic application of metal sealing butterfly valve

With the rapid development of industrial technology, the valve industry made more stringent requirements, especially for use in cryogenic medium butterfly, in addition to meet the general performance of the valve with a normal condition and, more importantly, in the low temperature under the valve seal reliability, flexibility and movement of cryogenic valves some other special requirements.

Because butterfly valve with a compact, small size, light weight (with the same pressure, the same diameter of the valve can reduce by 40% compared to 50%), fluid resistance, open and close rapidly, such as a series of advantages, it is widely used. Continue reading “cryogenic application of metal sealing butterfly valve”

Safety Operating Regulations for Welders-valve

Safety Operating Regulations for Welders-valve

1. Valve Welders are special types of work. They can operate independently only after they pass physical examination, professional and technical training, examination and issuance of “Operation Certificate for Special Types of Work”.

2. Welding grounding, prohibiting stacking of inflammable and explosive articles, should be equipped with fire fighting equipment to ensure adequate lighting and good ventilation.

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