Product Overview

It is mainly used at the water pump outlet of industrial water supply and sewage treatment plants. It prevents the medium in the pipeline network from flowing backward,automatically eliminates destructive water hammer, thus protecting water pumps and pipelines from damage,and is an optimal product for industrial water use and urban sewage discharge.

Main Features

• Adopts butterfly structure, featuring compact design and small installation space.
• Integrates buffer function to avoid violent impact when closing, reducing noise and wear.
• Automatically prevents medium backflow in pipelines, ensuring one-way fluid flow.
• Effectively eliminates destructive water hammer, protecting pumps and pipeline systems.
• Simple structure, convenient for maintenance and disassembly in later use.

Working Principle

1. When the fluid in the pipeline flows forward normally, the pressure pushes the butterfly disc open, allowing the medium to pass through smoothly.

2. When the fluid tends to flow backward (e.g., pump shutdown), the reverse pressure and the valve’s self-weight drive the butterfly disc to close gradually.

3. During the closing process, the built-in buffer structure slows down the disc’s closing speed, avoiding violent collision with the valve seat and eliminating destructive water hammer, thus preventing medium backflow and protecting the pipeline system.

Structural Features

• Core structure includes a butterfly disc (for controlling medium flow) and a matching valve seat, ensuring tight sealing when closed.
• Equipped with a built-in buffer component (e.g., buffer spring or damping structure) to slow down the closing speed of the butterfly disc.
• Adopts a compact overall design, with a lightweight valve body that saves installation space and reduces pipeline load.
• The valve shaft and butterfly disc are connected firmly, using wear-resistant and corrosion-resistant materials to enhance service life.
• Designed with a simple flow channel inside, minimizing medium resistance and ensuring smooth forward flow of fluids.

Maintenance

• Check hydraulic oil level annually
• Test closing time every 6 months
• Inspect disc and seat for wear during system shutdowns
• Lubricate adjustment mechanism yearly
• Verify proper operation after system pressure changes