Silent check valve

Judberd is a professional manufacturer in china for silent check valve(also known as non slam check valve ),our silent check valve is as below

Feature

Flange ends

Design Standard:BS EN12334

Flanges Standard: BS EN 1092-2

Inspection & testing: BS EN 12266-1

Working Pressure: 16bar

Working Temperature: -20℃ To 100℃

what is silent check valve?

The silent check valve is a valve specifically designed to eliminate water hammer and water shock. Then eliminates noise, hence the name silenced check valve. This is due to the short movement distance of the silent check valve and the ability to close the valve quickly before the medium returns under the counter-thrust of the medium and the action of the spring.

Silent check valve is a type of improved valve technology in the valve industry, belonging to the automatic valve, this new valve technology can effectively control the flow of the pipeline medium to prevent the backflow of the medium, often seen in the pipeline system with high requirements for sound. The silent check valve can open and close the valve differently according to the form of fluid movement in the pipeline.

The working principle of the silent check valve

When there is no media flow in the pipeline, the valve flap of the silent check valve is subject to spring action and is in a closed state. When the medium in the pipeline flows in the correct direction, the flap of the silent check valve is subject to fluid thrust and the flap is opened to allow the fluid to pass.
When the medium in the pipeline backflow occurs, the backflow medium produces a counter thrust, and the valve spring force, as the valve can only be opened in one direction, these two thrusts will tighten the valve flap on the sealing surface, to prevent the medium backflow. Compared with the ordinary check valve, the silent check valve opens and closes quickly, with a short movement distance, which reduces the water hammer sound and achieves the purpose of silence.

Silent check valve features

1. The water flow channel inside the valve body is straight and tends to be streamlined, which can improve the flow of the medium.
2. The valve flap opening and closing movement distance is short, can quickly open and close, water hammer sound is small, excellent silent effect.
3. Clever design of the valve body, reasonable structure, light weight, easy installation, good sealing performance.

Silent check valve application

Silent check valves are mainly used in drainage, fire-fighting and heating pipeline systems, installed in the outlet of the pipeline pump, mainly to prevent water hammer phenomenon, to protect pipeline facilities and reduce noise.Silent check valve can be installed in Horizontal or vertical pipeline.