Silent Check Valve

The FUXEON® Silent Check Valve, also known as a one-way valve, belongs to the lift-type check valve category. The product adopts a spring-reset lift-type optimized structure, mainly composed of valve body, valve disc, valve stem, spring, and other core components. It is conventionally installed on the pump outlet pipeline and is suitable for water systems and auxiliary pipelines where pressure exceeds the system threshold. This product overcomes the shortcomings of traditional check valves, such as high noise and water hammer impact. Through a short-stroke closing design, it achieves smooth, shock-free opening and closing, and quiet operation, completely solving common operational problems such as pipeline backflow and equipment reversal.

Technical Parameters:

check valve silent is lift-type check valve, where the central bearing moves up and down, so they are primarily installed vertically. For double-guided valve cores, horizontal installation is also possible. However, for large-diameter valves, the valve disc's weight can cause unilateral wear on the guide sleeve, severely affecting the sealing effect. Therefore, vertical installation is recommended for large-diameter valves.

What is the working principle of a quiet check valve?

The FUXEON® Silent Check Valve operates fully automatically based on medium pressure and a mechanical reset structure, requiring no manual operation. When the medium flows forward, the fluid pressure opens the valve disc, allowing normal water flow in the pipeline. When the pump stops or the medium shows a backflow tendency, the valve disc quickly closes under the combined action of its own gravity, spring return force, and reverse medium pressure, completely blocking the medium backflow channel. This protects the pump and motor from reverse rotation damage and also allows for safe pressure relief of the pipeline container, ensuring the stable operation of the entire fluid system.

Core Product Features:

1. Quiet Operation, Eliminating Water Hammer

The product adopts a short closing stroke design, resulting in extremely low medium backflow velocity at the moment of closure. The spring return process is smooth and without mechanical impact. It effectively suppresses and eliminates water hammer impact and vibration noise in the pipeline, ensuring smooth and quiet operation, meeting the low-noise operation requirements of high-standard building and industrial pipelines.

2. Stable Sealing, Durable

The valve disc uses a rubber soft seal structure, with the sealing ring embedded entirely within the valve body, significantly reducing seal loss caused by long-term medium erosion. A non-metallic lubricating sleeve is provided between the guide shaft and the guide frame, making the valve disc opening and closing smoother and more flexible, eliminating jamming and seizing failures, and significantly improving product stability and service life.

3. Compact Structure and Flexible Installation

The integrated structure of the product is compact and occupies little space, facilitating pipeline assembly and subsequent maintenance. The valve core adopts an up-and-down lifting motion structure, supporting vertical installation as standard; small and medium diameter dual-guide valve core models can support horizontal installation. For large-diameter valves (DN200-DN300), vertical installation is recommended to avoid unilateral wear of the guide sleeve due to the valve disc's own weight, ensuring long-term sealing performance.

4. Wide Adaptability and Strong Versatility

Generally suitable for high-rise building water supply and drainage networks, municipal water supply, and pump outlets. With simple structural adjustments, it can be used as a suction foot valve, adapting to various pipeline conditions and meeting the unidirectional fluid control needs of multiple scenarios in civil and industrial applications.

Actual Engineering Application Case

In 2025, a high-rise residential water supply and drainage renovation project in East China selected a batch of FUXEON® DN150 check valve silent type, uniformly installed at the outlet of the community's centralized water supply pumps. Before the upgrade, the existing traditional swing check valves generated strong water hammer and pipeline noise when the water pump started and stopped, affecting the living environment of residents. Furthermore, the equipment frequently failed, resulting in high maintenance costs.

After replacing the valves with FUXEON® silent check valves, the product's short-stroke silent closing structure completely solved the water hammer and noise problems. Pipeline operating noise was reduced to below 55 decibels, meeting residential noise reduction standards. The soft-seal structure completely eliminates backflow and pipeline pressure fluctuations. The equipment has been running stably for over 12 months without any seal failures or valve jamming. The water pump unit failure rate has been reduced by 90%, saving over 30,000 yuan in pipeline maintenance costs annually. This fully demonstrates the stability, noise reduction, and energy-saving advantages of FUXEON® products in residential water supply scenarios.

FAQ

Q1: How to maintain and service the FUXEON® silent check valve daily?

To ensure long-term stable operation, it is recommended to apply anti-rust oil to the valve flow channel and sealing surface every three months to isolate dust and water stains and prevent rust and scale buildup. Meanwhile, the valve disc and spring structure are inspected quarterly to check for wear, aging, and jamming issues. Pipeline impurities are cleaned regularly to ensure flexible valve opening and closing and reliable sealing.

Q2: In which scenarios are horizontal and vertical valve installations suitable?

The optimal installation method for FUXEON® silent check valves is vertical installation, which provides the best operational stability. Small-diameter dual-guide valve core products (DN40-DN150) are suitable for scenarios with limited vertical space and support horizontal installation. Large-diameter valves (DN200-DN300) must not be installed horizontally to avoid wear of the guide sleeve by the valve disc's own weight, leading to sealing failure and shortened lifespan; vertical installation is mandatory.

Q3: What are the limitations of the product's operating conditions?

This product is only suitable for water-based media, with a maximum operating temperature of 80℃. It is suitable for conventional water supply and drainage, and industrial circulating water systems, supporting nominal pressure conditions of 1.0Mpa and 1.6Mpa. Actual pipeline pressure must not exceed the rated parameters. It can be used in auxiliary systems for temporary pipeline overpressure, but is not suitable for high-temperature, highly corrosive media such as oil, gas, or chemical corrosion to avoid damaging the rubber seal structure.