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  • Properties of Materials Used for Superhigh Pressure Valve
    Posted: 09/23/2016 16:07:21 Hits: 2

    Nowadays, superhigh pressure technique has already been used for petrochemical industry, chemical industry, metal forming, powder metallurgy and other industries. Due to superhigh pressure technique widely applied, the performances of superhigh pressure valve have directly influenced on security, ...

  • Characteristics and Principles of Vent Butterfly Valve
    Posted: 09/23/2016 16:07:21 Hits: 8

    Characteristics of vent butterfly valve 1. The structure of vent butterfly valve is welded by center line disc and short steel plate, having compact structure, light weight, convenience for installation, small flow resistance, high flow capacity. It is not affected by high temperature expansion....

  • Structural Features of Flat Gate Valves
    Posted: 09/23/2016 16:07:21 Hits: 5

    Flat gate valves have following structural features: 1. The sealing structure of seat is elastic and equipped with pre-tightening force. The sealing between seat and sealing face is always face-to-face sealing.  2. The seat has self-cleaning performance, and it cannot be washed out direct...

  • Reasons Cause Leakage of Metal Seal Butterfly Valve
    Posted: 09/23/2016 16:07:21 Hits: 6

    Low temperature devices are constantly developed in China. The demands for low temperature valves are also gradually growing. To meet the demands of market economy developing, the structure of metal seal butterfly valve is improved. A three eccentric pure metal seal butterfly valve having high perfo...

  • Requirements for Assembling Technologies of Valves
    Posted: 09/23/2016 16:07:21 Hits: 4

    Valves are a kind of hardware products in common use. There are definite requirements for valves before or during assembling. Otherwise, valves having been assembled cannot show their excellent properties.    Requirements for valves before assembling: 1. According processing requir...

  • Repair after Core Falling off
    Posted: 09/23/2016 16:07:21 Hits: 3

    For rising stem wedge gate valve, connection between stem and core loses efficacy which caused by corrosion, abrasion or improper operation during valve on-off, then, the core falls off. If the valve cannot be opened after being closed, the valve only can be cut out from the system and replaced. I...

  • Low Temperature Ball Valve is Popular for LNG
    Posted: 09/23/2016 16:07:21 Hits: 4

    In recent years, for global gas industry highly developing, LNG has already become an important part of international gas trade. By 2020, LNG will account for 40% of gas trade volume and 15% of gas consumption. Gas liquefying plant should be equipped with low temperature ball valve. So, the valve ...

  • Regulating Valve Installation and Application
    Posted: 09/23/2016 16:07:21 Hits: 4

    As one of terminal control components for automatic control system, regulating is a key component for automatic control system.   Generally, regualting valve is positively used (installed), for it having simple flow path and small resistance . However,  unger high pressure,  rev...

  • Stainless Butterfly Valve Introduction
    Posted: 09/23/2016 16:07:21 Hits: 4

    Based on structure, stainless steel butterfly valve can be classified into offset plate butterfly valve, vertical plate butterfly valve, cantboard butterfly valve, lever butterfly valve. Based on seal, stainless steel butterfly valve is classified into soft seal butterfly valve and hard seal butte...

  • Features of Extension Rod Butterfly Valve
    Posted: 09/23/2016 16:07:21 Hits: 5

    Extension rod butterfly valve is widely applied in chemical engineering, petrifaction, petroleum, paper making, mining, power, liquefied gas, food, pharmacy, drainage, municipal administration, electric industry, urban construction, etc.   Several factors should be considered when choose ...