API600 gate valve, as a general industrial valve, is mainly used in petroleum, chemical industry, power station and other industries to cut off or connect pipeline media (wedge gate valve cannot be used for regulating function), so as to make the system operate normally. ZhengFeng Valve Group's general purpose gate valves are designed in accordance with API600 and in accordance with ASME B16.34 temperature and pressure classes, and can be supplied in standard, special and restricted classes.Our company has obtained API600 and CE/PED certification for gate valves.
Cast steel gate valve: adopts open rod support type, bolted bonnet structure (BB, OS&Y type), lifting stem, non-lifting handwheel, single or double gate, which is the international standard gate valve structure and fully conforms to the API600 and B16.34 standards and requirements.
Gate valve refers to the closure (gate) along the channel axis of the vertical direction of the movement of the valve, in the pipeline is mainly used to cut off the medium, that is, fully open or fully closed use. When the valve is fully open, the flow passage is equivalent to a straight pipe section, and the flow resistance coefficient is close to zero. The valve is made of carbon steel, alloy steel, stainless steel and heat resistant steel, etc. The sealing surface material is made of surface H, surface Y and surface W (material matching according to API600). The company has a mature manufacturing and heat treatment process for the above materials, which can fully meet the requirements of common working conditions in petroleum and petrochemical industry and related industries. For high-speed flow medium, the local opening of the gate of American standard gate valve can cause the vibration of the gate, which may damage the sealing surface of the gate and the seat.From the structural form, the main difference is the form of the sealing element used.Application scope: steel gate valve is suitable for the American standard ANSI flange connection Class150 ~ 2500, the working temperature - 29 ~ 425 ℃ (carbon steel) and - 40 ~ 500 ℃ (stainless steel) of pipe in the name of the road, for truncation or connect piping in the media. Through the selection of different materials, steel American standard gate valve can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea and other media. There are manual, bevel gear and electric.
Structural characteristics: 1. Low fluid resistance, low erosion of sealing surface by medium; 2. Less opening and closing of us-standard gate valves; 3. the flow direction of the medium is not limited, does not disturb the flow, does not reduce the pressure; 4. Simple shape, short structure length, good manufacturing technology, wide range of application.
Design and manufacturing standard: API 600
Structural length standard: ASME B 16.10
Connection flange standard: ASME B 16.5
Pressure and temperature class: ASME B 16.34
Test standard: API 698