一、进口气体用铸钢闸阀概述

进口气体用铸钢闸阀，Gas cast steel gate valve，是指专用于气体用管道，采用美国威盾优质上等的铸钢/碳钢/WCB材质，采用法兰连接方式，对气体用介质进行开启和关闭的阀门。闸阀的启闭件是闸板，闸板的运动方向与流体方向相垂直，闸阀只能作全开和全关，不适合作调节和节流。是最常用的截断阀之一，主要用来接通或截断管路中的气体用介质，不适用于调节气体用介质流量。铸钢闸阀适用的压力、温度及口径范围很大，尤其适用于中、大口径的气体用管道。

美国威盾进口气体用铸钢闸阀主要产品有：进口铸钢气体用闸阀，进口碳钢气体用闸阀，进口美标气体用闸阀，进口气体用法兰闸阀，进口高温气体用闸阀，进口高压气体用闸阀，进口气体用管道闸阀，进口气体用系统闸阀。

Gas cast steel gate valves, Gas cast steel gate valve， It refers to a valve specially designed for gas pipelines, using high-quality cast steel/carbon steel/WCB materials from the American shield, and using flange connection to open and close the gas medium. The opening and closing component of a gate valve is the gate, and the direction of the gate's movement is perpendicular to the direction of the fluid. The gate valve can only be fully open and fully closed, and is not suitable for adjustment and throttling. It is one of the most commonly used shut-off valves, mainly used to connect or cut off gas medium in pipelines, and is not suitable for regulating gas medium flow rate. Cast steel gate valves are suitable for a wide range of pressure, temperature, and diameter, especially for medium and large diameter gas pipelines.

The main products of Weidun Gas's cast steel gate valves include: gate valves for imported cast steel gas, gate valves for imported carbon steel gas, gate valves for imported American standard gas, flange gate valves for imported gas, gate valves for imported high-temperature gas, gate valves for imported high-pressure gas, pipeline gate valves for imported gas, and system gate valves for imported gas.

二、进口气体用铸钢闸阀参数

1、公称压力或压力级：PN1.0-16.0MPa、ANSI CLASS 150-1500LB、JIS10-20K

2、公称通径或口径：DN10～1000、NPS 1/2 ～36"

3、连接方式：法兰、对焊、螺纹等

4、适用温度：0～700℃

5、驱动方式：手动、伞齿轮传动、气动、电动、液动、气液联动、电液联动

6、阀体材料：WCB，碳钢，铸钢

7、适用介质：空气、氮气、氧气、氢气、氦气、氩气、液化气、天然气等气体

三、进口气体用铸钢闸阀优点

（1）气体用铸钢闸阀选材考究，符合威盾相关标准，材料的全面质量高。
（2）气体用铸钢闸阀密封副配对先进合理，闸板和阀座的密封面采用不同硬度的司太立（Stellite）钴基硬质合金堆焊而成，密封可靠、硬度高、耐磨、耐高温、耐腐蚀、抗擦伤性能好、寿命长。
（3）气体用铸钢闸阀阀杆经调质及表面氮化处理，有良好的抗腐蚀性、抗擦伤性和耐磨性。
（4）气体用铸钢闸阀采用楔式弹性闸板结构，中大口径设置推力轴承，磨擦力小，并配有撞击手轮，启闭轻松自如。
（5）可采用各种配管法兰标准及法兰密封面形式，有美标，德标，日标和中国国标标准满足各种工程需要及用户要求。

(1) The selection of materials for gas cast steel gate valves is meticulous, in accordance with relevant standards of Weidun, and the overall quality of the materials is high.

(2) The sealing pair of gas cast steel gate valves is advanced and reasonable. The sealing surfaces of the gate plate and valve seat are made of Stellite cobalt based hard alloy with different hardness by welding. The sealing is reliable, has high hardness, wear resistance, high temperature resistance, corrosion resistance, good scratch resistance, and long service life.

(3) The valve stem of gas cast steel gate valves has undergone quenching and surface nitriding treatment, which has good corrosion resistance, scratch resistance, and wear resistance.

(4) The gas cast steel gate valve adopts a wedge-shaped elastic gate plate structure, with thrust bearings installed on the medium and large diameters, low friction, and equipped with an impact handwheel, making it easy to open and close.

(5) Various piping flange standards and flange sealing surface forms can be used, including American standards, German standards, Japanese standards, and Chinese national standards to meet various engineering needs and user requirements.

四、进口气体用铸钢闸阀主要尺寸和重量