Nominal Diameter: DN150~DN4800
Nominal Pressure: PN2.5~PN40
Applicable Media: Water, seawater, silt water, oil products, etc.
Medium Temperature: ≤80℃
Valve Opening Time: 10~120 seconds (adjustable)
Quick Closing Time: 1.5~30 seconds (adjustable)
Slow Closing Time: 6~120 seconds (adjustable)
Quick Closing Angle: 70°±10°
Slow Closing Angle: 20°±10°
Flow Resistance Coefficient in Fully Open State: 0.1
Optional Control Power Supply: AC220V, DC220V, DC110V, DC24V

The hydraulically controlled slow-closing butterfly valve is a relatively new pipeline control device both domestically and internationally. It is primarily installed at the inlet of turbines in hydropower stations, serving as an inlet valve for turbines; or installed at the outlets of pumps in various pump stations for water conservancy, power, water supply, and drainage, replacing check valves and gate valves. During operation, this valve coordinates with the pipeline's main unit. Based on the principles of hydraulic transition processes and through the effective setting of electro-hydraulic control programs, it ensures reliable pipeline shutoff, effectively eliminates water hammer in the pipeline, and enables automatic valve closure without electricity, thereby protecting the safety of the pipeline system.
The intelligent heavy hammer and energy storage composite hydraulically controlled slow-closing butterfly valve produced by our company uses the potential energy of the heavy hammer as the power source for automatic valve closure. It employs a PLC intelligent control system and can be equipped with manual and automatic locking devices as per user requirements. With a low flow resistance coefficient, high automation level, comprehensive functions, and stable and reliable performance, this product represents a new generation of intelligent energy-saving equipment developed by our company. It is the result of extensive research, collection, and summarization of the performance of similar domestic and international products, incorporating multiple research achievements from the valve, hydraulic, and electrical industries.