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NT180-Hydraulic Counterweight Butterfly Valve

Country/Region china
Company Zhejiang Newton Fluid Control CO.,LTD.
Categories Pressure Reducing Valves
Telephone +86-577-57771766 57772766 57777137
ICP License Issued by the Chinese Ministry
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重庆百变王牌走势图NT180-Hydraulic Counterweight Butterfly Valve

Brief Introduction

Hydraulic Control Slow Closing Non-return Butterfly Valve, Normally named as Counterweight Butterfly Valve is one type of Advanced Products used for management on Controlling Equipments。 They are widely used into the area of entrance of Turbine in Hydraulic Power Station, or installed in the pump exit of irrigation, electric and water treatment areas which can replace the functions of Gate valve and Check Valve。

When such product of Hydraulic Counterweight Butterfly Valve is operated, this valve is matched together with main pipeline systems, based on the principle of water pass procedures, through the pre-set on/off procedures, effectively derived the water hammer through the pipeline to realize the flow cut-off and ensure a safety or protection function onto such systems

Hydraulic Control Slow Closing Non-return Butterfly Valve(Counterweight Butterfly Valve) from rechon NEWTON VALVEs are with features of small flow co-efficiency, high automatic, complete functions or devices, reliable performance which is one new high auto-tech. energy saving products designed and produced based on domestic/overseas similar areas covering valve, hydraulic and electric industries. With profound knowledge in such products, we NEWTON VALVE can also welcome customers' OEM order upon request to meet different areas requirement.
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, NEWTON 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, by this way, not only make the valve meet the requirement of on/off condition, further ensuring the valve can (only) be opened at the pre-set time and angle, closed at the pre-set separately and slowing 2nd stage. To realize the valve off without power, effectively eliminated the water hammer and prevent the accidents caused between water pump and turbine, reduce the pressure fluctuation of pipe-network, ensuring a safety and reliable operation of system equipment
4. Main Sealing is with Secondary sealing of Triple-eccentric or double-eccentric sealing structure which is easy on/off and reliable in sealing. Further more; there is an extra enlarged eccentric structure to ensure the Hydraulic Counterweight butterfly valve is with perfect self-sealing function. Small and mid-sized butterfly discs are designed with streamline plate structure, while the big sized discs are with double plated york type structure with small crush, smooth flow, valve co-efficiency is within 0.1~0.6 which is more smaller than the ones of check valves (1.7~2.6).
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
Nominal Diamater
<1000
>=1000
Valve opening Time (Adjustable)
10-60S
20-120S
Valve Closing Time (Adjustable)
Quick
1.5-15S
2.5-25S
Slow
2.5-60S
6-90S
Valve Closing Angle (Adjustable)
Quick
70+-10 Deg.
70+-10 Deg.
Slow
20+-10 Deg.
20+-10 Deg.
Min. Co-efficiency
0.1

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