Our electric hard-seated butterfly valves are widely used in industries such as petroleum, chemical, power, metallurgy, food, light industry, and papermaking. They can be installed on industrial pipelines with temperatures ≤425°C and are suitable for regulating flow and cutting off media, such as coal gas, air, steam, water, seawater, and oil products. Equipped with an electric actuator, these valves enable remote control and automated operation. Our range of electric hard-seated butterfly valves, electric three-offset butterfly valves, and electric metal-seated butterfly valves are designed for long life and energy efficiency. They feature a three-dimensional core principle design, a multi-layered seating structure that combines hard and soft sealing, high precision machining, and excellent craftsmanship. These valves are composed of main components including the body, butterfly plate, multi-layered seat, valve stem, and transmission mechanism.
Due to the adoption of a three-dimensional eccentric principle design in electric hard-seated butterfly valves, electric three eccentric butterfly valves, and electric metal-seated butterfly valves, the spatial movement trajectory of the sealing surfaces achieves idealization. This results in no friction or interference between the sealing surfaces, further enhanced by the proper selection of sealing materials. Consequently, the butterfly valves are reliably guaranteed for their sealing performance, corrosion resistance, high-temperature resistance, and wear resistance. The main features are as follows:
Low starting torque, flexible and convenient, energy-saving and labor-saving.
(2) Three-dimensional interlocking structure, ensuring the butterfly plate becomes tighter with each closure, providing reliable sealing performance and achieving zero leakage.
(3) High-pressure, corrosion-resistant, wear-resistant, and long service life.
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| Electric Hard Seal Butterfly Valve (Stainless Steel Flanged Type) | Electrical Hard Seal Butterfly Valve (Stainless Steel Clamp Type) | Electrical Hard-seated Butterfly Valve (Explosion-proof Model) |
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Electrical Hard Seated Butterfly Valve Design Standard
| Design Standards | GB/T2238-1989 |
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| Flange connection dimensions | GB/T9113.1-2000；GB/T9115.1-2000；JB78 |
| Structural Length | GB/T12221-1989 |
| Pressure Test | GB/T13927-2000；JB/T9092-1999 |
Electric Hard-sealed Butterfly Valve Actuator Technical Parameters
| Actuator Type | Introducing the OV-TORK Series Actuator Specifications | Imported 3610R Series Actuator Specifications | Introducing the BV-TORK series actuator specifications |
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| Power Voltage | Standard: 220V AC Single Phase, Optional: 110V AC Single Phase, 380/440V AC Three Phase, 24V/110V/220V AC |
| Output Torque | 50N·M～2000N·M | 50N·M～1500N·M | 50N·M～3000N·M |
| Motion Range | 0～90° 0～360° | 0～90° | 0° to 90°, 0° to 270° options available |
| Control Method | Toggle switch indicator (2-position switch control), Passive contact signal, 1/5k potentiometer, Intelligent adjustment (4-20mA analog signal control) |
| Action Time | 15/30/60 seconds | 10/15/30 seconds | 18S～112S |
| Protective Device | Overheat Protection | Overload Protection | Built-in overheat and overload protection |
| Ambient Temperature | -30°～60° | -30°～60° | -20℃～+70℃ |
| Manual operation | With handle for operation | With handle for operation | Mechanical clutch mechanism, with handwheel operation |
| Mechanical Limit | Electrical and mechanical double limiting | Electrical and mechanical double limit | 2 external adjustment bolts |
| Ingress Protection (IP) rating | IP65 | IP55 | IP65, IP67, Customizable IP68 |
| Ex-proof rating | Non-explosive | ExdⅡ BT4 | ExdⅡ BT4,ExdⅡ CT6 |
| Position Measurement | Optional switch or potentiometer installation | Proportional Control Unit | Potentiometer, Proportional Control Unit |
| Driving Motor | 8W/E | AC Reversible Motor | Cage-type asynchronous motor |
| Input Interface | PE 1/2" Inlet Line Lock | 2-PF 1/2" Line Lock | 2 PF 3/4" |
| Housing material | Aluminum alloy | Steel, Aluminum Alloys | Steel, Aluminum Alloy, Aluminum Bronze, Polycarbonate |
| External Coating | Dry powder, epoxy polyester, with strong anti-corrosion properties |
(1) Powerful Functions: Smart, Adjustable, Switch-Type.
(2) Compact Size: Only about 35% of the volume of similar products.
(3) Easy to Use: Single-phase power supply, simple wiring; spherical protrusion structure for easier observation; no need for oiling or checking, waterproof and rustproof, installation at any angle.
(4) The protective device features dual limit switches, overheat protection, and overload protection. Full travel time options are 15 seconds, 30 seconds, 45 seconds, and 60 seconds, and it also includes manual operation capability.
(5) Smart CNC: The built-in module directly receives standard signals (4-20mA DC / 1-5VDC) from computers or industrial instruments via a computer single-chip and intelligent control software to achieve intelligent control of valve opening and precise positioning.
You may also choose the 3810 series or NA series of electronic angular positioners. The PSQ series or DYR series can also be selected. Valves with an DN400 or greater bore size typically use a 380VAC electric actuator.
Electrical Hard Seated Butterfly Valve - Parts Material
| Part Name | Materials |
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| Valve body | Cast iron, stainless steel, chrome-molybdenum steel, alloy steel |
| Butterfly Plate | Cast Steel, Alloy Steel, Stainless Steel, Chromium Molybdenum Steel |
| Seal ring | Stainless steel combined with high-temperature-resistant asbestos board to form a multi-layered structure |
| Valve Stem | 2Cr13 Stainless Steel, 1Cr13 Stainless Steel, Chromium Molybdenum Steel |
| Filling Material | O-rings, flexible graphite |
Electrical Hard Seal Butterfly Valve - Performance Specifications
| Nominal Pipe Size DN (mm) | DN50～1200 |
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| Nominal Pressure | PN(MPa) | 0.6 | 1.0 | 1.6 | 2.5 |
| Test Pressure | Tensile Test | 0.9 | 1.5 | 2.4 | 3.75 |
| Seal Test | 0.66 | 1.1 | 1.76 | 2.75 |
| Low-pressure leak test | 0.5～0.7 |
| Applicable Medium | Air, water, wastewater, steam, gas, oil products, etc. |
| Applicable Temperature | Carbon Steel: -29℃ to 600℃; Stainless Steel: -40℃ to 600℃ |
Electric Hard Seated Butterfly Valve - Product Selection
(1) Valve Body Parameters: Nominal Diameter, Working Pressure, Process Medium, Application, Valve Body Material, and a series of other parameters.
(2) Actuator Parameters: Power Voltage, Control Method, Control Signal (4-20mA, 1-5V), Operating Mode (Electrical-Open, Electrical-Closed)
Please provide as detailed technical specifications as possible, which will facilitate our production and technical team in accurately selecting the appropriate options for you. Should you have any questions, feel free to call us, and we will strive to provide you with excellent service!
Related Names: Electric Rigid Seal Butterfly Valve, Electric Three Offset Butterfly Valve, Electric Metal Sealed Butterfly Valve
