What is the function of a gate valve? Introduce the types and working principles of gate valves!

What is the function of a gate valve? Introduce the types and working principles of gate valves!

Gate valve is a commonly used normally closed check valve in industry. The so-called normally closed check valve refers to the automatic closing of the valve without external force. Gate valves are generally composed of valve bodies, valves, valve stems, packing, transmission mechanisms, etc.

The function of gate valves

The function of a gate valve is to regulate the fluid inside the pipeline. When the gate valve is in an open state, fluid can flow smoothly through the valve; When the gate valve is in a closed state, it can isolate the fluid in the pipeline, achieving the goal of stopping the flow of fluid in the pipeline.

Types of gate valves

1. Elastic seat sealing gate valve: The valve uses elastic material as the seat and valve sealing surface.

2. Metal sealed gate valve: usually used in high-temperature and high-pressure situations.

3. Packing gate valve: Valves that use packing sealing have a longer service life but higher maintenance costs.

4. Hydraulic control gate valve: Control the opening and closing of the valve through hydraulic reaction force.

Working principle of gate valve

The working principle of a gate valve is to start or close the valve through the valve stem above the valve. When the valve rotates or when the weight of the valve passes through the support, the gap between the valve and the valve seat gradually decreases until it reaches a fully closed state. When opening the gate valve, the gap between the valve and the valve seat should be large enough to ensure smooth flow of fluid.

Precautions for the use of gate valves

Before using the gate valve, it is necessary to clean the pipeline and remove any debris from the "dead corners".

When using gate valves, pay attention to factors such as fluid temperature and pressure.

3. When maintaining and maintaining the gate valve, it is necessary to inspect and clean it at a specified time.

Overall, gate valves are an important type of valve in industry, which can control the flow of fluids, play a role in isolation and regulation, and are therefore widely used in industry.