Features and Installation Precautions of the Micro-Resistant Slow-Closing Check Valve

The Micro-Resistant Retardant Check Valve is a valve designed to prevent medium backflow, featuring a novel structure, compact size, low fluid resistance, stable operation, reliable sealing, wear resistance, and excellent buffering performance.

The principle of operation is as follows: When the pump begins to work or the inlet pressure increases, the valve disc opens under the action of the inlet pressure. While the medium passes through, it enters the tube wall cylinder, causing the piston to move to the working position. When the pump stops or the inlet pressure decreases,

The valve disc closes rapidly by 90% under the action of the backwater pressure, with the remaining 10% slowly closing under the piston's influence, thereby eliminating the water hammer caused by rapid closure. It is widely used at the pump outlet of industrial water supply and wastewater treatment plants.

In large pump units for water supply and drainage, oil, petrochemical, and steel industries.

The structural features of the micro-friction slow-closing check valve mainly include the following aspects:

1. Short structural length: The structural length of the micro-friction slow-closing check valve is only 1/4 to 1/8 of that of the traditional flanged check valve.

2. Compact and Lightweight: Its weight is only 1/4 to 1/20 of that of the traditional micro-friction check valve.

3. Easy Installation: Suitable for both horizontal and vertical pipelines, installation is convenient.

4. Flow Path Unobstructed, Low Fluid Resistance: The design significantly reduces fluid resistance, offering notable energy-saving benefits.

5. Excellent Sealing Performance: Utilizes rubber soft sealing to ensure superior sealing capabilities, wear resistance, and a long service life.

6. Quick Response: Fast operation, excellent sealing performance.

7. Long lifespan and high reliability: The overall structure is simple and compact, featuring an aesthetically pleasing design with extended lifespan and reliability.

When installing micro-friction check valves, the following points should be noted:

Avoid Weight on Check Valves: Large check valves should be supported independently to prevent the influence of pipeline pressure.

2. Medium Flow Direction: Ensure the medium flow direction aligns with the arrow on the valve body.

3. Installation Location: The rising and falling vertical gate check valve should be installed on a vertical pipeline, while the rising and falling horizontal gate check valve should be installed on a horizontal pipeline.

4. Adjusting the Slow Closure Time: The pin valve installed on the side of the valve can regulate the flow of compressed water in the piston rear cavity, thereby controlling the slow closure time of the valve disc. This time can be adjusted freely within 0 to 60 seconds.

5. Maintenance: Valves should be stored in a dry, well-ventilated room. Regular inspections should be conducted when stored for extended periods, ensuring the passageways are clean and the ends are smooth.