Counterweight Butterfly Valves are with following features
1. This Type of Valve of Counterweight Butterfly Valve Can replace the function of Gate Valve or Check Valve from entrance of water pump, with a integral parts of Mechanical, electric and hydraulic a uni-body which can reduce the landing area and base investment etc.
2. With complete function of Both Electric and Hydraulic, there is no need to equip other devices which can be used as a separate system to debug and control at site, this valve can also be services as one unit of system for DCS, managed by central computer through the I/O to realize the united-operation by the water pump, turbine, bypass valve and other pipeline equipments, moreover, this kind of valve is also equipped with handwheel which can ensure that the valve can be operated even without electric power to meet a special debug and controlling requirements under a special work condition.
3. With features of good performance controlling and Wide range of adjustment, rechon vango hydraulic Counterweight Butterfly Valve are with many regulators inside of the Hydrau-electric system which can on/off the system set conforming to different pipelines' requirements
Main Parameters:
Size Ranges: DN150~DN4000
Pressure Ratings: PN25~PN40
Working Temperature: No more than 80C
Service Medium: Fresh Water, Sea Water, Sand Water and Oils etc.
Special Parameters
Valve Closing Time:
10~60S: Valves below DN100
20~120S: Valves include and Above DN1000
Hydraulic Counterweight Butterfly Valve Structure Introduction
Divided by types of System Accumulation, This type of Butterfly Valves are into two series of Counterweight Butterfly Valve and Accumulated Type Butterfly Valve. Inside of which, the Counterweight Butterfly Valve is further divided into Standard Counterweight Butterfly Valve, Automatic Pressure Self-keeping (B) and Locking Type Pressure Self-keeping Counterweight Butterfly Valve. Accumulated Type Controlling system is divided into standard type accumulation (X) and Locking Type Accumulation Types (XS)
Hydraulic counterweight Butterfly Valve is mainly made up of 4 Parts including Main Valve, Transmission Device, Hydraulic Power Station and Power Case
Main Valve Body contains Valve Body, Transmission Device, Sliding Bearing, Sealing Parts etc.
Counterweight type Butterfly Valve normally used a horizontal structure, and the valve shaft with half-shaft structure.
Accumulated Type Butterfly Valve Normally used a layout which can also be used as Vertical Layout upon users requests
Transmission devices are mainly containing Hydraulic Cylinder, Arm, Support Plate and Transmission devices etc (Counterweight type butterfly valves are additionally with Counterweight, Lever and Locking Oil Cylinder etc. ) which is the main on/off actuator for hydraulic operated valves
Each Quick and Slow Closing Adjustable Valve, Quick and Slow Closing Angle Adjustable Valve is equipped with Transmission Hydraulic Cylinder. Please see our OIM for more Adjustment details before operation.
Positive Direction is normally adopted on horizontal layout; While Inversed Type (I, e, the transmission device is located onto the other side of valve body) can also be adopted under some special condition or upon users' request.
Hydraulic Power Station is made up of Oil pump system, Manual Pump, Accumulator, Solenoid Valve, Draining Valve, Flow Control Valve, Globe Valve, Hydraulic Pressure System and Oil Case etc.
The Accumulator is used as the pressure compensation in Counterweight Type Pressure Self-keeping System. The Accumulator is used as the pressure compensation and recess of oil cylinder in Locking type Counterweight Pressure Self-keeping System.
The Accumulator is used as the Provider of Main power for valve on/off in accumulated type System. Flow Control Valve is served as the time regulator of valve open
Manual Pump is used as the valve on/off device for system adjustment or under a special condition.
China zhongya valve Co., Ltd. is a collection research and development, manufacturing, sales and integrated high-tech enterprises. The company is located in NO. 3511 Yongqiang Avenue Longwan District Wenzhou city Zhejiang China...The company introduces advanced technology from abroad, the modern scale production, and equips Germany processing center, Taiwan CNC machine, super precision vertical lathe, automatic painting line and special equipment, machining center, CNC machine tools, special molding, slinging cleaning, passivation treatment, ultrasonic cleaning equipment and a variety of valve pressure testing equipments. As well as equipped with photoelectric direct reading analyzer, thickness tester, radiographic, ultrasonic and liquid penetrant ect, non-destructive testing equipment to ensure that the company's products can be manufactured strictly in accordance with clients'requirements of related standard, to meet the different demands of them.
The company mainly in producing gate valve, globe valve, ball valve, check valve, butterfly valve, hydraulic control valve, supply and drainage water equipment and a variety of special non-standard special valves.
The company implements API (USA) and EN (European Union), ISO (international organization for standardization), BS (British), JIS (Japan) and GB (China) and other major advanced industrial countries and the latest standards of the national standard designing production. Valve body materials are used of carbon steel, alloy steel, chrome molybdenum steel, stainless steel, low-temperature steel, high-temperature steel, nickel base and cobalt base alloy and other materials, and materials specified by the user. Products are widely used in petroleum, chemical, natural gas, coal chemical industry, electric power, shipbuilding, pharmaceutical, paper making, beer industry, food, building, water supply, prevent pollution, and a large number of them are exported to the United States, Europe, Russia, Middle East, Japan, South Korea and southeast Asia and other regions.
