Manual Hydraulic Control Slow-shut Check Butterfly Valve

Introduction of products

Hydraulic control slow-shut check valve is a relatively advanced pipeline control equipment both at home and aboard at present, which is mainly installed at the water turbine inlet of the hydropower station as a water turbine inlet valve; or installed at the outlet of various pumping stations for water conservancy, electric power, water supply and drainage and so on replacing the function of check valve and gate valve. The valve works with the pipeline main frame to remove the water hammer of the pipeline effectively and achieve the reliable check of the pipeline through the preset on/off program on the principle of hydropower transition process so as to protect the safety of pipeline series. Our hydraulic control slow-shut check butterfly valve boasts small flow resistance series, high automation degree and complete functions plus stable and reliable performance, which is a new generation of efficient, energy-saving and intelligent product developed by our designers through accumulated research after introducing in many research fruits from such industries as valve, hydraulic pressure and electricity based on extensive collection, study and summarization of the performance of products both at home and aboard. Our company boasts strong technical strengths and provides customized design upon special requests of users to meet their multi-level needs for this kind of product.

The products mainly has the following characteristics:

1.       It can replace the function of the original electric gate valve and check valve at the outlet of water pump, which integrates the mechanical, electric and hydraulic systems as a whole and thus reduces the floor area and capital investment.

2.       It is provided with complete functions of electro hydraulic control, which is available for no-site debugging and control as an independent system standalone without additional configurations; also for linked operation with water pump, water turbine, by-pass valve and other pipeline equipment as a device cell of distributed control system(DCS) under the centralized management by the central computer through I/O access, it is also provided with the manual function which can achieve the manual on/off valve in case of no power supply and meet requirements for valve debugging and control on special working conditions

3.       high control ability, large regulating range and strong applicability. The electro hydraulic control system is provided with many regulating points, which can set the on/off program in accordance with different requirements for pipeline control to ensure valve opening and quick/slow-shut in accordance with preset time and angle when valve on/off conditions are satisfied. It is also available for shut without power supply. Therefore, it can remove the destructive water hammer effectively, avoid the occurrence of runaway accidents for water pump and water turbine, reduce the pressure fluctuation of pipe network system and safeguard the safe and reliable running of the equipment.

4.       The seal pair of the main valve adopts a triple-electric mental seal or dual-eccentric rubber seal structure, which boats easy on/off and reliable seal, the additional extended eccentricity contributes to the fine performance of self �Cclosing and self sealing. Small/medium bore butterfly valve is designed to have a streamline flat structure while the large-bore disc has a dual-flat trussed structure with small crowding, smooth current and a valve flow resistance of only 0.1-0.6 far less than that the check valve(1.7-2.6). Thus, boasting obvious energy-saving.