Cast steel gate valve: it is a general designation of cast steel gate valve, which is cast into castings with metal steel materials. Cast iron gate valve, forged steel gate valve and malleable iron gate valve corresponding to cast steel gate valve.

Cast steel gate valve: according to the material, there are carbon steel gate valve, stainless steel gate valve, low alloy steel gate valve (high temperature resistant chromium molybdenum steel belongs to this category), low temperature steel gate valve, etc. Under all kinds of cast steel gate valves, there are various specific steel grades commonly used as follows: 

1.The cast grades of carbon steel gate valve are: WCA, WCB, WCC, LCB, etc.; applicable temperature is - 46 ℃ ~ 425 ℃. 

2.Stainless steel gate valve casting brand: 301 stainless steel, CF8 stainless steel (corresponding to 304 stainless steel forging), CF8M stainless steel (corresponding to 316 stainless steel forging), etc.; applicable temperature: - 198 ℃ ~ 816 ℃. 3. Low alloy steel includes high temperature alloy steel and high strength low alloy steel, among which high temperature alloy steel is commonly known as chromium molybdenum steel. Cast grades of Cr Mo steel gate valve: zg1cr5mo, zg15cr1mov, ZG20CrMoV, wc6, wc9, c12a, etc. Applicable temperature: 550 ℃ ~ 750 ℃. The applicable temperature of each specific brand material is different, which is selected according to the actual working conditions. 

What is the difference between Forge Steel Globe Valve and Motorized Globe Valve？ 

Forged steel globe valve is suitable for most occasions, and the requirements for temperature medium are not high. However, there are many differences in its corresponding suitable places. For example, the following categories, including forged steel angle globe valve and forged steel flange globe valve, are common. They can bear a lot of pressure, and the sealing surface is not easy to wear and scratch, the sealing performance is good, and the technical requirements for operators are not high, so they are very suitable for flow regulation, and have applications in many fields. 

Electric stop valve, also known as electric stop valve, is the most widely used valve, which is different from electric ball valve. It is widely popular because of the small friction between the sealing surfaces in the opening and closing process, which is more durable, less opening height, easy manufacturing and maintenance. It is not only suitable for medium and low pressure, but also for high pressure. The closing principle of the electric stop valve is to rotate the valve rod by the electric thrust, so that the sealing surface of the valve disc and the sealing surface of the valve seat fit closely, and prevent the flow of medium The electric stop valve only allows one-way flow of medium and has directionality during installation. The structural length of the stop valve is longer than that of the gate valve. At the same time, the fluid resistance is large, and the sealing reliability is not strong in long-term operation.