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What are the main differences between American standard valves and national standard valves?

Release date: [2019-07-09] Click rate:

Wenzhou Wodesen Valve Technology Co., Ltd. has been dedicated to the development, manufacture and sales of high-quality professional valves.

The company mainly produces: gate valves, globe valves, bushing plug valves, handwheel operating mechanisms, muffler check valves, sight glasses, sight cups, wafer check valves, high platform flange ball valves, high platform flange tees Ball valve, high platform thin ball valve, high performance butterfly valve, low platform flange ball valve, low platform flange three-way ball valve. Product materials CF8, CF8M, CF3, CF3M, WCB, WC6, LCB and special steel. Products are in accordance with the national standard JB / GB. American standard ANSI / API, Japanese standard JIS, German standard DIN and other standards are produced and widely used in chemical, nuclear power, water supply, petroleum, papermaking, pharmaceutical, brewing, natural gas, food processing, power and other industries.

American standard gate valve

The main differences between American standard valves and national standard valves are:

1. The unit of nominal diameter of national standard valve is mm, and the unit of nominal diameter of American standard valve is in (inch).

2. The standard American standard of the flange is not the same as the national standard.

3. The structure length is different.

4. The inspection requirements are different. The inspection requirements of the American standard valve are higher than the national standard. A valve (famen) is a control component in a fluid delivery system, and has functions such as cut-off, adjustment, diversion, prevention of backflow, voltage stabilization, shunting, or pressure relief. Valves for fluid control systems range from the simplest globe valves to the various valves used in extremely complex automatic control systems.

The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, dual-phase steel valves, plastic valves, non-standard customized valve materials, etc. .