GB gate valve

Product model: Z41H
Nominal diameter: DN50～1200mm
Pressure range: PN10～160MPa
Operating temperature: -29℃～+600℃
Main material: carbon steel, stainless steel, alloy steel
Applications: tap water, sewage, building, petroleum, chemical, food, medicine, light industry, electric power, ship, metallurgy, energy system, etc.

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產(chǎn)品詳細(xì)

[Essential information]

Valve lock valve or gate valve, a valve is the most widely used. It is to control the opening and closing of the valve through the lifting of the gate. The gate is perpendicular to the direction of the fluid and changes the relative position between the gate and the valve seat to change the channel size.

[Standard parameter]

Design standard	GB/T 12234
Structural length	GB/T 12221
Connection standard	GB/T 9113、JB/T 79、HG/T 20592
Pressure test	GB/T 13927、JB/T 9092
Pressure temperature rating	GB/T 12224

[Valve features]

1, the gate has two sealing surfaces, the sealing surface to form a wedge, wedge angle varies with valve parameters, usually 5 degrees.
2, wedge gate valve sealing principle is combined by two on the two upper wedge sealing surface and sealing surface of the valve body wedging, thereby sealing performance.
3, wedge gate valve according to the stem drive gate opening and closing different ways, can be divided into bright rod gate valve (lift rod gate valve) and dark rod gate valve (rotary rod gate valve).
4, wedge gate valve in accordance with the different forms of the gate structure, can be divided into elastic gate valve and rigid gate valve.
5, the valve body for casting molding, valve body and valve cover with bolt connection, the middle flange using spiral gasket seal, the customer has special requirements can also be used metal ring connection.
6, the channel is smooth, the flow coefficient is small. The sealing surface is eroded and eroded by medium.
7, The sealing surface is made of alloy steel or hard alloy. It has good abrasion resistance and scratch resistance.
8, flexible graphite packing, reliable sealing, easy and flexible operation.
9, medium flow unrestricted, no disturb, do not reduce pressure.
10, The shape is simple, the structure length is short, the manufacturing technology is good, and the scope of application is wide.

[Adaptive condition]
Gate valve is one of the most common valve, the gate of the upper and lower work to connect (open) and truncated (closed) fluid medium in the pipeline. This kind of gate valve is widely used in water supply, sewage, construction, petroleum, chemical, food, medicine, light industry, electric power, ship, metallurgy, energy system and so on. It is used as regulating and intercepting device.