The forged steel globe valve boasts a short but reliable opening or closing stroke, effectively blocking the flow. This valve is highly suitable for flow blocking and scheduling due to the proportional change in the valve seat port with the valve disc stroke. Moreover, it exhibits exceptional wear-resistance as the friction between the valve disc and the sealing surface of the valve body is minimal compared to a gate valve. Furthermore, the opening height is typically only a quarter of the valve seat channel diameter, making it significantly smaller than a gate valve. Consequently, the forged steel globe valve is an excellent choice for various applications.
The manufacture process for forged steel globe valves is superior due to their need for only one sealing surface on the valve body and disc, making repairs easier. These valves can be operated manually, or through bevel gear, pneumatic, electric, hydraulic, gas-liquid linkage, or electro-hydraulic linkage methods. Additionally, they are ideal for use with various fluids like water, steam, oil, nitric acid, acetic acid, oxidizing media, urea, and others.
The distribution of channels in the forged steel globe valve is designed in such a way that they are positioned on the upper and lower parts of the sealing surface. This arrangement takes into consideration factors such as flow resistance, machining allowance, and outer circle dimensions. A well-thought-out channel processing plan and optimization of the valve body channel processing are crucial for ensuring the machining accuracy of the valve body channel.
The accuracy and quality of the valve body channel machining directly impact the sealing performance and service life of the valve. Therefore, it is of utmost importance to formulate a reasonable plan for processing the channels and optimize the processing techniques used. By doing so, we can guarantee the desired machining accuracy and high-quality outcomes for the valve body channels.
Forged Steel Butt Welded Globe Valve
The forged steel globe valve's sloping channel can undergo various processing techniques, including turning, milling, drilling, and boring operations. The processing power depends on various factors, such as the precision required, end-product specifications, and the machinery used. A thorough analysis of these factors is essential in creating a top-quality end-product.
A forged steel globe valve is a type of valve where the valve disc moves along the centerline of the valve seat. The movement of the valve disc directly affects the opening and closing of the valve seat port, with the port size changing in proportion to the disc stroke. Due to its unique design, the forged steel globe valve finds extensive usage in the water conservancy industry. This valve serves as a crucial control device within industrial piping systems, playing a significant role in regulating the flow of fluids.
After the grease injection process for the forged steel globe valve, it is crucial to take necessary precautions to prevent any accidents. Tighten the pressure relief and drain plugs to ensure the system's safety. It is vital to keep in mind the importance of uniform grease output while the valve is being greased, and pay attention to the discharge of grease. The grease must first be discharged from the closest point to the injection port, then to the low point, and finally to the high point in a sequential manner. If the grease does not follow this pattern or fails to discharge, it indicates a blockage that should be addressed promptly by cleaning the system. By carefully following these guidelines, you can ensure optimal performance from your forged steel globe valve while minimizing any risk of accidents.
Before installation, it is crucial to visually inspect forged steel globe valves. The valve's nameplate must adhere to the requirements set forth in the current national standard "General Valve Marking" GB 12220. Additionally, for valves with a working pressure surpassing 1.0 MPa and possessing a cutting function on the main pipe, it is imperative to conduct a thorough strength and performance test prior to installation. The valve should only be utilized after successfully passing the aforementioned test.