COVNA, as an motorized butterfly valve manufacturer with 22 years experience. We manufacture wafer type/lugged type/food safe type/double flanged type/PVC motorized butterfly valve for choice. We committed to be your first choice of valve manufacturer to offer you a cost-effective motorized butterfly valve automation solution.
Advantages of wafer electric butterfly valve including large size range, various seals to suited to a wide range of mediums. High-quality IP67 weather-proof electric actuator for outdoor uses. Stainless steel and cast iron material to meet your application’s requirements.
| Actuator Type | On/Off Type, Modulating Type, Intelligent Type |
| Torque Range | 50Nm to 4000Nm(442 in-lb to 35398 in-lb) |
| Protection Class | IP67 Weather-proof |
| Voltages | 12vdc, 24vdc, 24vac, 220vac, 380vac |
| Valve Materials | Cast iron, stainless steel, carbon steel |
| Size Range | 2in to 24in (DN50 to DN600) |
| Medium Temperature | -10℃ to 180℃ (14℉ to 356℉) |
| Pressure Rating | PN10, PN16, Class 150, 10K |
Offering lugged electric butterfly valve in ANSI, JIS, DIN, GB standard for your applications. Firm connection, zero-leakage, high flow and wide range of mediums to suit your project.
| Actuator Type | On/Off Type, Modulating Type, Intelligent Type |
| Torque Range | 50Nm to 4000Nm(442 in-lb to 35398 in-lb) |
| Protection Class | IP67 Weather-proof |
| Voltages | 12vdc, 24vdc, 24vac, 220vac, 380vac |
| Valve Materials | Stainless steel, cast iron, carbon steel |
| Size Range | 2in to 24in (50mm to 600mm) |
| Medium Temperature | -10℃ to 180℃ (14℉ to 356℉) |
| Pressure Rating | PN10, PN16, Class 150, 10K |
Advantages of food-safe electric butterfly valve including food-grade stainless steel material, easy to install, self-lock and weather-proof. Well for food industry, medical industry, brewery industry for flow control.
| Actuator Type | On/Off Type, Modulating Type, Intelligent Type |
| Torque Range | 50Nm to 4000Nm(442 in-lb to 35398 in-lb) |
| Protection Class | IP67 Weather-proof |
| Voltages | 12vdc, 24vdc, 24vac, 220vac, 380vac |
| Valve Materials | Stainless steel 304/316/316L |
| Size Range | 19mm to 102mm |
| Medium Temperature | -10℃ to 180℃ (14℉ to 356℉) |
| Pressure Rating | PN10, PN16 |
Features of electric butterfly valve including lightweight, compact design with high torque up to 4000Nm. Food grade, eco-friendly. Self-lock and overloading protection to keep your application safe.
| Actuator Type | On/Off Type, Modulating Type, Intelligent Type |
| Torque Range | 50Nm to 4000Nm(442 in-lb to 35398 in-lb) |
| Protection Class | IP67 Weather-proof |
| Voltages | 12vdc, 24vdc, 24vac, 220vac, 380vac |
| Valve Materials | UPVC, CPVC, PPH, PVDF |
| Size Range | 2in to 12in (2″, 2.5″, 3″, 4″, 5″, 6″, 8″, 10″) |
| Medium Temperature | -5℃ to 80℃ (23℉ to 176℉) |
| Pressure Rating | PN10, 145psi |
Manufacturing electric flanged butterfly valve in cast iron and stainless steel materials for your choice to meet your requirements. Double flange connection available in ANSI, JIS, DIN, GB standard. Large size range for your options.
| Actuator Type | On/Off Type, Modulating Type, Intelligent Type |
| Torque Range | 50Nm to 4000Nm(442 in-lb to 35398 in-lb) |
| Protection Class | IP67 Weather-proof |
| Voltages | 12vdc, 24vdc, 24vac, 220vac, 380vac |
| Valve Materials | Stainless steel, cast iron, carbon steel |
| Size Range | 2in to 24in (DN50 to DN600) |
| Medium Temperature | -10℃ to 180℃ (14℉ to 356℉) |
| Pressure Rating | PN10, PN16, Class 150, 10K |
COVNA electric hard seat butterfly valve available in wafer type and flange type. Well for the application which requires high temperature and high pressure.
| Actuator Type | On/Off Type, Modulating Type, Intelligent Type |
| Torque Range | 50Nm to 4000Nm(442 in-lb to 35398 in-lb) |
| Protection Class | IP67 Weather-proof |
| Voltages | 12vdc, 24vdc, 24vac, 220vac, 380vac |
| Valve Materials | Stainless steel 304/316/316L |
| Size Range | 2in to 24in (DN50 to DN600) |
| Medium Temperature | -10℃ to 400℃ (14℉ to 725℉) |
| Pressure Rating | PN10, PN16, PN25, PN40, Class 150, Class 300, 10K |
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LARGE STOCK
COVNA have huge stock of electric butterfly valve including all size and all voltage. Fast delivery within 5 working days. We will try our best to meet your project schedule.
EXPERIENCED TEAM
20 Years of experience in electric butterfly valve. We have an experienced engineer to provide technical support to you and an experienced sales team to help you select the actuator valve.
STRICT QUALITY CONTROL
Strict quality control with ISO 9001:2015 quality control system to ensure provide the quality product to you. 100% inspection before shipping to ensure the product meets your requirements.
MARKETING SHARE
Sharing the valve marketing info to help you improve your business with our actuator valves. We believe that our experience will help you gain more business and gain more benefits.
Tell us the valve you need, we will help you to quote and recommend the suitable valve for you
1 pcs，We are a factory integrating production and sales, and all products are available
It is about 5-7 days after we receive the payment.
Yes, some stock can be shipped out within 3 days.
It depends on the torque of actuator.
The detailed timing would be as the following:
* COVNA-05(50Nm)-20 seconds
* COVNA-10(100Nm)/COVNA-16(160Nm)-25 seconds
* COVNA-30(300Nm)/COVNA-60(600Nm)-60 seconds
* COVNA-125(125Nm)/COVNA-250(2500Nm)/COVNA-400(4000Nm)-100 seconds.
Classification of Motorized Motorized butterfly valves.
There are many types of Motorized Motorized butterfly valves, and there are various classification methods.
1、Classification by structure form
(1) Center seal Motorized butterfly valve
(2) Single eccentric seal Motorized butterfly valve
(3) Double eccentric sealing Motorized butterfly valve
(4) Three eccentric seal Motorized butterfly valve
2、Classification by sealing surface material
(1) Soft seal Motorized butterfly valve
(1) The sealing side is composed of non-metallic soft material to non-metallic soft material.
(2) The sealing side is composed of metal hard material to non-metal soft material.
(2) Metal hard seal Motorized butterfly valve or stainless steel Motorized butterfly valve. The sealing sub is composed of metal hard material to metal hard material.
3、Classification by sealing form
(1) Forced sealing Motorized butterfly valve.
(1) Resilient sealing Motorized butterfly valve. The sealing specific pressure is generated by the valve plate squeezing the valve seat when the valve is closed, and the elasticity of the valve seat or the valve plate.
(2) Applied torque sealing Motorized butterfly valve. Sealing pressure is generated by the torque applied to the valve shaft.
(2) Pressure-filled sealing Motorized butterfly valve. The sealing pressure is generated by the resilient sealing element on the valve seat or plate.
(3) Automatic sealing Motorized butterfly valve. The sealing pressure is automatically generated by the medium pressure.
4、Classification according to working pressure
(1) Vacuum Motorized butterfly valve. The working pressure is lower than the standard atmospheric pressure of the Motorized butterfly valve.
(2) Low pressure Motorized butterfly valve. The Motorized butterfly valve with nominal pressure PN≤1.6MPa.
(3) Medium-pressure Motorized butterfly valve. Nominal pressure PN 2.5MPa 6.4MPa Motorized butterfly valve.
(4) High pressure Motorized butterfly valve. The nominal pressure PN is 10.0∽80.OMPa Motorized butterfly valve.
(5) Ultra-high pressure Motorized butterfly valve. The nominal pressure PN<100MPa Motorized butterfly valve.
5、Classified by working temperature
(1) High temperature Motorized butterfly valve. t<450℃ Motorized butterfly valve.
(2) Medium temperature Motorized butterfly valve. 120℃
(3) Normal temperature Motorized butterfly valve. -40℃
(4) Low temperature Motorized butterfly valve. -100℃
(5) Ultra-low temperature Motorized butterfly valve. t ≤ -100 ℃ Motorized butterfly valve.
6、Classification by connection method
(1) Clamp type Motorized butterfly valve
(2) Flanged Motorized butterfly valve
(3) Trunnion type Motorized butterfly valve
(4) Welded Motorized butterfly valve
Motorized butterfly valve principle The sealing principle of Motorized butterfly valve
The valve plate is processed to ensure that its sealing surface has a suitable surface roughness value, and the synthetic rubber seat forms a suitable surface roughness value for the sealing surface when moulded into shape. When the valve is closed, through the rotation of the valve plate, the outer sealing surface of the valve plate squeezes the synthetic rubber seat, so that the synthetic rubber seat produces elastic deformation and forms elastic force as the sealing ratio pressure to ensure the sealing of the valve.
