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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”

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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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Schlumberger introduces integrated seat technology ball valve

 

 

HOUSTON — Schlumberger announced today the release of the GROVE IST integrated seat technology ball valve. New ball valve technology features a patented seat-on-ball design that significantly improves performance over conventional metal-seated ball valves in addition to offering considerable size and weight benefits.

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Butterfly Valve API 609 Category B

What does the American Standard Butterfly Valve API 609 Category B mean?

API 609 is the design standard for the American standard butterfly valve, which specifies the structure length is divided into Category A and B, in Chinese is the structure length of API 609 A butterfly valve and B butterfly valve, also called the body length. Also different in design/Inspection. Here we focus on Face to face of API609 Valve.

Butterfly valves are categorized according to their structure. Nowadays, there are more midline/center line butterfly valves and eccentric butterfly valves on the market. The standard length of the American standard butterfly valve used in the center line butterfly valve is the API 609 Class A butterfly valve. The eccentric butterfly valve is mainly a three-offset butterfly valve. The structure length standard adopted is the Class B butterfly valve regulated by API 609.
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Perfect repair of large size gate valve

Perfect repair of large size gate valve
The waste valves replaced from the working site are corroded by various media, fluid pressure, and affected by different temperatures. The parts including the valve body are affected by different degrees and different locations and cause valve malfunction. The drop cannot even be used. However, the used old valves that have been ineffective at the “validation” are not worthless and have no remediation value. They cannot be repaired and used, as long as they use the principles of metal structure, dynamics, fluidics, corrosion protection, welding, and heat treatment. Knowledge, the provision of essential maintenance equipment and the establishment of an experienced professional team, can fully implement deep-level, high-grade, high-quality repair and refurbishment of used valves.

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Center disc butterfly valve /Soft seat factory

New Butterfly valve factory Start to work:

Prodction: Center disc butterfly valve with soft seat, No-pin or with pin design. Seat: Rubber/PTFE/FEP

Material: Mainly Body:Ductile iron with stock, and also Carbon steel body/Stainless steel, Cooper alloy,, Special alloy.

Production Ability: 2000Ton/year

Application: Mainly clean medium water,sea water, Water treatment, also civil project, power plant, building, offshore/marine supertructure

mainly use for clean medium water, civil project,water treatment, power plant, building, offshore/marine supertructure

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Inspections expose mass environmental violations

Chen Jining, minister of environmental protection, asks about the measures for dealing with pollutants at Sinopec Beijing Yanshan Co, a major petrochemical enterprise in Beijing, during a surprise inspection on Tuesday.[Photo provided to China Daily]
Largest-ever operation to control pollution in China begins

Inspections have exposed violations by companies illegally discharging pollutants and falsifying monitoring data, despite emergency responses to the ongoing air pollution in northern regions, according to the Ministry of Environmental Protection.

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Enviromental protection requires valve to be low-leakage( Fugitive Emission Valve)

Valve in the use of the process , environmental impact is an important indicator of the performance of the valve.  low valve leakage is an important parameter to evaluate the environmental protection performance. Valve low leakage requirements have become the basic requirements of the valve design and manufacturing. Usually means  Fugitive Emission Requirment for valve.
In 2015, for the first time, API600 standards which was widely used in the valve industry , the valve low leakage test requirements API624 been joined the standard text. China National Standard (GB) hydrotreating device with the valve standard has also been clearly required in accordance with ISO15848 low leakage detection.

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