Silent Check Valve VS Swing Check Valve

Check valve is an automatic valve that allows fluid to flow in one direction only and prevents reverse flow. There are many types of check valves, the most common of which are silent check valves and swing check valves. What is the difference between them in terms of structure, working principle and performance? Let’s take a look.

Silent check valves have a spring-loaded disc that travels a short distance along the pipe axis to close automatically in a fraction of a second. They are also known as spring check valves or axial flow silent check valves. They are suitable for reducing noise and water hammer when swing check valves close quickly. They can also be used in vertical piping or in installations where a constant, controlled pressure is required.

Swing check valves have a flat disc that rotates around a hinge pin or shaft. They are the most commonly used type of check valve, but they are prone to water hammer and closing shock. They should only be used in horizontal pipes with small flow variations. They can be equipped with various accessories, such as levers and weights, or hydraulic buffer devices to control the closing time.

VALTECCN is a professional check valve supplier and manufacturer with many years of experience and technology to provide customers with high-quality, high-performance and high-efficiency check valve products. Both our quiet check valves and swing check valves are rigorously tested and certified to meet the needs of a wide variety of industrial applications. No matter what kind of check valve you need, we can provide you with professional consulting and customized services, so that you can enjoy our influence and advantages.