Working Principle of Hammer Pressure Maintaining Butterfly Valve
The hammer pressure maintaining Butterfly Valve is a critical hydraulic-controlled pipeline device engineered for reliable operation and water hammer prevention. Its intelligent design integrates automatic pressure maintenance with adjustable closing phases for optimal system safety.The main Butterfly Valve product names of China Butterfly Valve Network include:Hydraulic Control Butterfly Valve,Accumulator(Emergency Off) Quick Off Butterfly Valve,Electric Speed Control Butterfly Valve,Water Hammer Prevention,Pressure Maintaining,Two-Stage Closing,Emergency Operation,Pipeline Safety
1. Automatic Opening & Pressure Maintenance
During opening, the solenoid valve redirects flow to start the oil pump. Hydraulic oil enters the cylinder via the flow control valve, driving the piston to lift the hammer and open the butterfly disc. Once fully open, the pressure maintaining system activates, charging the accumulator until reaching the preset high pressure, then stopping automatically. If pressure drops below the set minimum, the pump restarts to maintain stable valve position. Opening speed is adjustable from 10 to 90 seconds.
2. Two-Stage Closing for Water Hammer Prevention
Closing begins with solenoid valve reversal, releasing oil through fast/slow throttle valves back to the tank. The hammer descends in two phases: rapid closure (70% stroke) quickly stops main flow, followed by slow buffering (30% stroke) to gradually complete sealing. Adjustable timing (fast: 2-25s, slow: 6-90s) allows customization for different pipeline conditions, effectively suppressing water hammer.
3. Flexible Control & Emergency Features
The valve can pause at any intermediate position for system debugging. An integrated manual pump provides emergency operation during power outages, while the normally-closed bypass valve enables gravity-assisted closing using the hammer's potential energy.
Combining hydraulic automation with mechanical reliability, this valve ensures precise flow control for water supply, drainage, and industrial pipeline applications.Do you still need to know or purchase the following Butterfly Valve products:
