What is a silent check valve?

What is a Silent Check Valve?

Silent check valves are valves specifically designed to eliminate water hammer and water impact. Noise can be eliminated, hence the name Silent Check Valve. This is due to the short movement distance of the mute check valve, which can be in the medium of the counter-thrust, and the role of the spring, in the medium back to flow before the rapid closure of the valve.

Silent check valve is an improved valve technology in the valve industry, belonging to the automatic valve, this new valve technology can effectively control the flow of pipeline media to prevent media backflow, commonly used in high-pressure pipeline systems.

Silent check valve can be different according to the form of fluid movement in the pipeline to open and close the valve.

Silent check valves are designed to prevent back flow in high temperature range pumping applications. The valve element movement is controlled via a central guide where a centrally mounted spring together with the short movement aids the quick closing that is essential in reducing shock associated with valve closure. The pumped media can be water, glycol or other clean, neutral liquids.

Compared with ordinary check valves, mute check valves open and close quickly, and the movement distance is short, reducing the sound of a water hammer, to achieve the purpose of mute.

Silent check valve features:

1. The water flow channel in the valve body is straight and tends to streamline, which can improve the flow of the medium.

2. Valve opening and closing movement distance is short, and can be quickly opened and closed, the water hammer sound is slight, and the silent effect is excellent.

3. The valve body is cleverly designed, has a reasonable structure, is lightweight, easy installation, and has good sealing performance.

4. The combination of light butterfly plate, short stroke, and fast closing spring design effectively reduces water hammer.

5. Streamline design reduces head loss.

6. Special seat design ensures quick and easy replacement of internal parts.

7. Inner and outer surfaces are coated with fusion bonded epoxy resin.

8. Metal valve seat is durable and high temperature resistant.

9. The outlet of DN200 and the below products can be directly installed with butterfly valves without needing to adapt joints.

Silent check valve application:

The silent check valve is mainly used in drainage, fire fighting, heating, and other pipeline systems, installed in the outlet of pipeline pumps, mainly to prevent the phenomenon of water hammer, protect pipeline facilities and reduce noise.

Silent check valve can be installed in horizontal or vertical pipeline.

Check valves must be installed in pipelines