Kalvotarkistusventtiili

Kalvotarkistusventtiili, also known as a diaphragm check valve, is a type of check valve that uses a flexible diaphragm to control flow. This diaphragm is typically made of rubber, silicone, or other elastomeric materials. The valve is designed to allow fluid to flow in only one direction and automatically stops the flow when the direction reverses.

In a typical operation, when the forward flow pressure is sufficient, it lifts the diaphragm away from the valve seat, allowing the fluid to pass through. When the flow stops or reverses, the pressure on the downstream side pushes the diaphragm back against the seat, creating a seal and preventing backflow. The flexibility of the diaphragm allows it to conform closely to the valve seat, providing a tight seal.

Kalvotarkistusventtiilit are often used in applications where a soft, quiet closing is desired, as the diaphragm absorbs shock and reduces noise compared to some other types of check valves. They are commonly found in water systems, fuel lines, medical devices, and other applications requiring reliable backflow prevention. Their simple design makes them relatively low maintenance and they can handle a variety of fluids. The specific material of the diaphragm is chosen based on the chemical compatibility and temperature requirements of the application.