A flange gate valve is a gate valve with a flange connection method, which is the most common connection method. Flange gate valves are stable and reliable when used in pipelines, so they are mistakenly used in high-pressure pipelines. The direction of movement of the gate is perpendicular to the direction of the fluid, and the gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces, and the most commonly used mode is that the two sealing surfaces of the gate valve form a wedge shape. The wedge angle varies depending on the valve parameters, usually 50, and is 2 ° 52 'when the medium temperature is not high. Characteristics of flanged cast iron gate valves:
1. The fluid resistance is small, and the sealing surface is less susceptible to medium brushing and erosion.
2. Opening and closing are more effortless.
3. The flow direction of the medium is unrestricted, does not disturb flow, and does not reduce pressure.
4. Simple form, short structural length, good manufacturing process, and wide application range.
For a long time, the general flange cast iron gate valves used in the market have generally experienced water leakage or rust. Our company has introduced European high-tech rubber and valve manufacturing technology to produce elastic seat sealed gate valves, which overcome defects such as poor sealing and rust in general gate valves. Elastic seat sealed gate valves use the compensation effect of elastic deformation generated by the elastic gate plate to achieve good sealing effect. This valve has the advantages of light opening and reliable sealing Significant advantages such as good elastic memory and service life. Flange cast iron gate valves can be widely used as regulating and intercepting devices in pipelines such as tap water, sewage, construction, petroleum, chemical, food, medicine, light textile, electricity, ships, metallurgy, energy systems, etc.
