一、进口不锈钢闸阀产品概述

进口不锈钢闸阀：阀体、阀盖、闸板、闸杆使用不锈钢材料，阀座密封面为聚四氟乙烯、不锈钢+硬质合金或堆焊硬质合金，填料一般采用硬质合金、聚四氟乙烯、石棉石墨或柔性石墨。公称尺寸 DN15~DN800，工作压力 1.6MPa~20.0MPa，适用温度 ≤200℃，适用于硝酸类、弱腐蚀性介质管路中。进口闸阀的启闭件是闸板，依靠闸板与介质的垂直升降来截断或开启。闸阀只作全开或全关，不能作调节使用。闸阀优点是流体阻力小，缺点是开关时间长；本应是缺点的也相对是闸阀的一个优点，因为关闭时间较长，关闭缓慢，所以在管道中不易产生水锤。注意：因为闸阀阀体与阀板的连接处有一凹槽，容易卡住杂质，导致内漏，所以不建议闸阀用在有杂质的介质中。另，用在消防系统中的闸阀，建议采用明杆式，方便查看阀门的开关与否。
流体阻力小，密封面受冲击侵蚀小，不改变介质流向，不扰流，压降小等特点，适用的压力、温度范围广，是一种常见的截断阀，广泛适用于石油、化工、火力发电厂等油品，水蒸气管路上接通或截断管路中的介质。（不可做节流阀使用）美国VTON威盾阀门是一家国际性的专业阀门公司，隶属于美国威盾国际集团（USA VTON INTERNATIONAL GROUP）旗下企业。总部位于美国犹他州，致力于生产、设计研发高品质通用阀门和控制阀门。
美国VTON威盾阀门下设有专门生产闸阀的数字化工业4.0的厂房，采用铸钢或者不锈钢为阀体，采用各种标准的法兰连接方式，用于水，油，气体管道介质，使密封达到零泄漏的球阀。主要产品有：进口法兰闸阀，进口软密封闸阀，进口铸钢闸阀，进口不锈钢闸阀，进口电动闸阀，进口硬密封闸阀，进口水用闸阀，蒸汽闸阀，高温闸阀，高压闸阀，零泄漏闸阀等。
美国威盾国际集团高度重视中国市场的开发，根据威盾总裁Williams提出的“高品质的阀门，全方面的技术支持，完善的服务”的发展理念，美国VTON威盾用于水，蒸汽，石油化工、化纤、
照明电器、热处理、冶金、玻璃、食品、医药、电子、国防航天、航空等领域。

Stainless steel gate valve: The valve body, valve cover, gate plate, and gate rod are made of stainless steel material. The sealing surface of the valve seat is made of polytetrafluoroethylene, stainless steel+hard alloy or welded hard alloy. The filling material is generally made of hard alloy, polytetrafluoroethylene, asbestos graphite or flexible graphite. The nominal size is DN15~DN800, the working pressure is 1.6MPa~2.0MPa, the applicable temperature is ≤ 200 ℃, and it is suitable for pipelines in nitric acid and weakly corrosive media. The opening and closing component of a gate valve is the gate plate, which is cut off or opened by the vertical lifting of the gate plate and the medium. The gate valve can only be fully open or fully closed and cannot be used for adjustment. The advantage of gate valves is low fluid resistance, but the disadvantage is long switching time; One of the advantages of gate valves, which should have been a disadvantage, is that they have a longer closing time and a slower closing speed, making it less likely to cause water hammer in pipelines. Attention: Because there is a groove at the connection between the valve body and valve plate of the gate valve, it is easy to catch impurities and cause internal leakage. Therefore, it is not recommended to use the gate valve in media with impurities. Additionally, for gate valves used in fire protection systems, it is recommended to use a rising stem type for easy inspection of valve opening and closing.

It has the characteristics of low fluid resistance, low impact erosion on the sealing surface, no change in the flow direction of the medium, no disturbance of flow, and low pressure drop. It is suitable for a wide range of pressure and temperature, and is a common shut-off valve. It is widely used for connecting or cutting off the medium in oil, chemical, thermal power plants, and other oil and steam pipelines. (Cannot be used as a throttle valve) VTON Valve is an international professional valve company, affiliated with the USA VTON INTERNATIONAL GROUP. Headquartered in Utah, USA, we are committed to producing, designing, and developing high-quality universal valves and control valves.

VTON Shield Valve in the United States has a digital Industry 4.0 factory specializing in the production of gate valves. The valve body is made of cast steel or stainless steel, and various standard flange connection methods are used for water, oil, and gas pipeline media to achieve zero leakage sealing of ball valves. The main products include: flange gate valves, soft sealed gate valves, cast steel gate valves, stainless steel gate valves, electric gate valves, hard sealed gate valves, water gate valves, steam gate valves, high-temperature gate valves, high-pressure gate valves, zero leakage gate valves, etc.

VTON International Group attaches great importance to the development of the Chinese market. According to the development concept proposed by President Williams of VTON, "high-quality valves, comprehensive technical support, and comprehensive services", VTON is used for water, steam, petrochemicals, chemical fibers, and more

Lighting appliances, heat treatment, metallurgy, glass, food, medicine, electronics, national defense aerospace, aviation and other fields.

二、进口不锈钢闸阀产品特点

1、采用奥氏体不锈钢，对氧化性酸介质拥有良好的耐蚀性。

2、介质流经不锈钢闸阀时不改变其流动方向，流体阻力小。

3、闸板运动方向与介质流动方向相垂直，启闭力矩小，开闭较省力。

4、介质流动方向不受限制，不扰流、不降低压力，介质可从闸阀两侧任意方向流过、均能达到使用的目的，最适用于介质流动方向可能改变的管路中。

5、闸板垂直置于阀体内，结构长度较短。

6、密封性能好。全开时密封面受冲蚀较小。

1. Using austenitic stainless steel, it has good corrosion resistance to oxidizing acid media.

2. When the medium flows through the stainless steel gate valve, its flow direction does not change, and the fluid resistance is small.

3. The direction of the gate movement is perpendicular to the direction of the medium flow, with a small opening and closing torque, making it easier to open and close.

4. The flow direction of the medium is not restricted, does not disturb flow, does not reduce pressure, and the medium can flow in any direction from both sides of the gate valve, achieving the purpose of use. It is most suitable for pipelines where the flow direction of the medium may change.

5. The gate is vertically placed inside the valve body, with a shorter structural length.

6. Good sealing performance. When fully open, the sealing surface is less susceptible to erosion.