Overview of lift check valves

The lift check valve is commonly known as the lift check valve, in which the fluid can only flow along the water inlet, but the medium at the water outlet cannot return.

Here is the content list:

●Introduction to lift check valves

●Introduction to performance requirements of lift check valves

●Notes for lift check valves

Introduction to lift check valves

The check valve is also called a check valve or check valve. It is used to prevent the reverse flow of oil flow in the hydraulic system, or to prevent the reverse flow of compressed air in the pneumatic system. There are two types of lift check valves: straight-through type and right-angle type. There are three types of right-angle lift check valves: threaded connection, plate connection, and flange connection. A check valve is also called a check valve or check valve. It is used to prevent the reverse flow of oil flow in the hydraulic system, or to prevent the reverse flow of compressed air in the pneumatic system. There are two types of lift check valves: straight-through type and right-angle type. The straight-through check valve is installed on the pipeline with a threaded connection. There are three types of right-angle lift check valves: threaded connection, plate connection, and flange connection. The hydraulic control check valve, also known as the lock valve or pressure retaining valve, is the same as the check valve to prevent the reverse flow of oil.

Introduction to performance requirements of lift check valves

When the oil flows in one direction, the resistance is smaller, that is, the pressure loss is smaller.

The contact between the valve core and the valve seat shall be well-sealed, and there shall be no leakage at all. When the oil returns from the reverse direction, it shall not pass through completely.

The lift check valve shall act quickly and sensitively, and there shall be no impact or noise during operation.

Notes for lift check valves

When installing the one-way check valve, pay special attention to the flow direction of the medium. Under normal conditions, the flow of medium is the same as the direction of the arrow indicated on the valve body. In case of abnormality, it is necessary to cut off the normal flow of medium. The valve at the bottom of the check valve shall be installed at the bottom of the pump suction pipe.

When the check valve is closed, it will generate water hammer pressure in the pipeline, which may cause damage to the valve, pipeline, or equipment in serious cases. Especially for large-port pipelines or high-pressure pipelines, it should be highly noticed by the check valve operator.

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