Screwed End Gate CI UPKAR

A gate valve is a type of valve used to control the flow of fluid in a pipeline. The “CI” in “CI gate valve” typically refers to the material used in making the valve body, which stands for Cast Iron. Here’s a description of a CI gate valve:

1. Valve Body: Usually made of cast iron, the body of the gate valve houses the internal components and provides the structure to contain the flow of the fluid.
2. Gate: The gate is the movable component within the valve that controls the flow of the fluid. It typically moves up and down within the valve body to either allow or block the passage of fluid.
3. Bonnet: This part covers the valve body and is attached to it, providing protection to the internal components and often houses the stem and the actuator (if present).
4. Stem: The stem is connected to the gate and controls its movement. Turning the valve handle or using an actuator causes the stem to move, thereby raising or lowering the gate to control the flow of fluid.
5. Sealing Surfaces: When the gate is lowered, it comes into contact with sealing surfaces in the valve body, ensuring a tight seal and preventing the flow of fluid. This feature helps in effectively stopping the flow when the valve is fully closed.
6. Rising vs. Non-Rising Stem: Gate valves can have either a rising or non-rising stem. In a rising stem valve, the stem moves up and down as the valve is operated, giving a visual indication of the valve’s position. In a non-rising stem valve, the stem’s position remains fixed while the gate moves up and down along the threads of the stem.

Gate valves are commonly used in various industries due to their ability to provide a full flow with minimal pressure drop when fully open. They are often preferred for applications where a straight-line flow and shutoff are required, rather than for throttling purposes.

However, it’s important to note that while gate valves offer good shutoff capabilities, they might not be ideal for regulating flow due to their design, as they are susceptible to damage from erosion or accumulation of debris in the sealing surfaces.