Accumulator Type Hydraulic Control Slow Closing Check Butterfly Valve HD743SH/HD741X

The HD743SH/HD741X accumulator type hydraulic control slow closing check butterfly valve is currently one of the more advanced pipeline control equipment at home and abroad. It is mainly installed at the pump outlet of various pumping stations such as water conservancy, electricity, and water supply and drainage, replacing the functions of check valves and gate valves. During operation, the valve cooperates with the pipeline host and, according to the principle of hydraulic transition process, effectively eliminates water hammer in the pipeline through a preset opening and closing program, achieving reliable cut-off of the pipeline and protecting the safety of the pipeline system. The HD743SH/HD743X accumulator type hydraulic control slow closing check butterfly valve has a small flow resistance coefficient, high degree of automation, complete functions, and stable and reliable performance. It is a new generation of intelligent, efficient and energy-saving products developed by our company’s designers based on extensive collection, research, and summary of the performance of similar products at home and abroad, and the introduction of multiple research achievements in the valve, hydraulic, electrical and other industries. Through accumulation and thin development, it has been developed. The company has strong technical strength and can design independently according to the special requirements of users, meeting the needs of users in multiple aspects for this type of product.

Application scope:
Mainly installed at the pump outlet of various pump stations such as water conservancy, electricity, water supply and drainage, replacing the functions of check valves and gate valves.

Product features:

1. It can replace the functions of the original electric gate valve and check valve at the outlet of the water pump, and integrate the mechanical, electrical, and hydraulic systems into a whole, reducing land occupation and infrastructure investment.
2. The electro-hydraulic control function is complete, and it can be used as an independent system for on-site debugging and control without the need for additional configuration; It can also be used as a device unit in a Distributed Control System (DCS), centrally managed by a central computer through I/O channels, and linked with water pumps and other pipeline equipment for operation; And it is equipped with manual function, which can also achieve manual opening and closing of valves when there is no power supply, meeting the requirements of valve debugging and control under special working conditions.
3. Good controllability, wide adjustment range, and strong adaptability. The electro-hydraulic control system is equipped with multiple adjustment nodes, which can be set according to different pipeline control requirements for opening and closing programs, ensuring that when the valve opening and closing conditions are met, the valve can automatically open and divide into two stages of fast closing and slow closing according to the pre-set time and angle. And it can achieve non electric valve closing, effectively eliminate destructive water hammer, prevent water pump and turbine unit runaway accidents, reduce pressure fluctuations in the pipeline system, and ensure the safe and reliable operation of equipment.
4. The sealing surface of the main valve is a triple eccentric metal seal or a double eccentric rubber seal structure, which is easy to open and close and reliable to seal; And there is an additional increased eccentricity, which gives the valve good self closing and self sealing performance. The medium and small diameter butterfly plates are designed as streamlined flat plate structures, while the large diameter butterfly plates are designed as double flat plate truss structures, with small squeezing and smooth water flow. The valve flow resistance coefficient is only 0.15-0.8, which is much smaller than the flow resistance coefficient of the check valve (1.7-2.6), and the energy-saving effect is obvious.

Execution standards:
Hydraulic control butterfly valve JB/T5299
Dimensions of flange connections GB/T17241.6
Pressure test GB/T13927
Structural length GB12221

Performance parameter:

External structural connection size:

Hydraulic pressure station:

安装正装图: