How does a vertical tilting disk check valve work?

How does a vertical tilting disk check valve work?

A check valve is a type of valve used to prevent backflow of fluids. It is also known as a non-return valve. One type of check valve is a vertical tilting disk check valve. It is a simple and reliable valve that works by using a disk that tilts on a hinge to allow fluid to flow in one direction and prevent it from flowing in the opposite direction. Here is how a vertical tilting disk check valve works:

1. Design and structure.

A vertical tilting disk check valve has a disk that is mounted on a hinge or pivot in a vertical position. The disk is slightly larger than the inner diameter of the valve body. The disk is designed to tilt or rotate on the hinge when there is fluid flow in the forward direction, allowing the fluid to flow through the valve. When there is no forward flow or when there is backward flow or backpressure, the disk closes and prevents the fluid from flowing backward.

2. Forward flow.

When there is fluid flow in the forward direction, the fluid flows through the valve and pushes the disk open. The disk tilts or rotates on the hinge and allows the fluid to flow through the valve. The disk is designed in such a way that it does not create a significant pressure drop across the valve, which helps to minimize the energy loss in the system.

3. Backflow prevention.

When there is no forward flow or when there is backward flow or backpressure, the disk closes and prevents the fluid from flowing backward. When the disk is in the closed position, the fluid pressure acts on the disk face, which helps to keep the disk in a closed position and prevents any leakage through the valve. The disk is also designed to have a tight seal with the valve seat, which helps to prevent any reverse flow.

4. Types of tilting disks.

There are several types of tilting disks used in vertical tilting disk check valves. These include the flat disk, the spherical disk, and the tapered disk. The flat disk is the simplest and the most commonly used disk. It is a flat plate that tilts on a hinge and has a tight seal with the valve seat when in the closed position. The spherical disk is a spherical shape disk that provides a more reliable seal than the flat disk, especially in high-pressure applications. The tapered disk is a disk that is thicker at the top and tapers down to a thinner edge at the bottom. It provides a smoother flow path for the fluid and reduces the risk of turbulence and pressure drop across the valve.

5. Advantages of vertical tilting disk check valves.

Vertical tilting disk check valveVertical tilting disk check valves offer several advantages over other types of check valves. These include:

- Simple design and construction.

- Reliable operation and long service life.

- Low pressure drop and energy loss.

- Easy maintenance and repair.

- Suitable for a wide range of fluid applications and operating conditions.

Conclusion.

Vertical tilting disk check valves are simple, reliable, and effective devices for preventing backflow of fluids. They work by using a disk that tilts on a hinge to allow fluid to flow in one direction and prevent it from flowing in the opposite direction. The various types of tilting disks and their advantages make these valves suitable for a wide range of fluid applications and operating conditions.

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