Product Overview

It is used in water supply and drainage pipelines, installed at the water pump outlet. It prevents medium backflow, eliminates destructive water hammer, effectively reduces water hammer pressure when the valve closes, and ensures the safe operation of the pipe network.

Main Features

• Used in water supply and drainage pipelines, mainly installed at the water pump outlet.
• Prevents medium backflow and eliminates destructive water hammer effectively.
• Reduces water hammer pressure when the valve closes to protect pipe network safety.
• Features low resistance design and slow-closing function for stable operation.

Working Principle

1. When the pump runs, the medium pressure pushes the valve disc open to allow normal fluid flow.

2. When the pump stops, the valve disc closes slowly under the combined action of medium backflow pressure and its own mechanism.

3. The slow-closing process eliminates destructive water hammer and reduces closing water hammer pressure.

4. It stops medium backflow completely after closing, ensuring the pipe network operates safely.

Structural Features

• Incorporates a slow-closing mechanism (e.g., hydraulic or spring-driven) to control the valve disc closing speed.
• Adopts a low-resistance internal structure to minimize fluid flow resistance during normal operation.
• Has a reliable check component (valve disc) for effective prevention of medium backflow.
• Features a sturdy valve body suitable for water supply and drainage pipeline pressure conditions, ensuring long-term use.

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