Electric gate valves are key devices in industrial pipeline systems used to control the flow of fluids (liquids and gases). They consist of an electric actuator and a valve body, and are automatically opened and closed by electrical energy. Their core function is to cut off or open the pipeline medium. They are suitable for scenarios requiring precise flow control or remote operation, such as in the petrochemical, water treatment, and power industries. Compared to manual gate valves, electric gate valves significantly improve operational efficiency and safety, and reduce the need for manual intervention.
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Electric Actuated Gate Valve Technical parameters
Material:Carbon Steel (WCB, WCC for strength), Stainless Steel (SS304, SS316 for corrosion resistance), Cast Iron
Size Range:2″ to 48″ (DN50-DN1200)
Connection Options:Flanged, Threaded (NPT, BSP), Butt Weld, Socket Weld
Working Pressure:Class 150 to Class 1500 (up to 2,500 psi / 172 bar)
Working Temperature:-29°C to 425°C
Sealing Options:Metal-to-Metal, Resilient Seat, Graphite, PTFE
Manufacturing Method:Cast, Forged, Machined
Applicable Medium:Water, Oil, Gas, Steam, Chemical Fluids
Manufacturing Standard:API 600, API 602, ASME B16.34, BS 5163, DIN 3352
Electric Gate Valve Structural Characteristics:
Sealing System
Utilizes pressure self-tightening seals or valve body-cover gasket seals to ensure zero leakage under high-pressure conditions.
The valve disc and seat sealing surfaces are made of cobalt-chromium-tungsten hard alloy plasma-sprayed, achieving a hardness of HRC60 or higher, providing wear resistance and scratch resistance, extending service life by 3-5 times.
Valve Stem and Disc Design
The valve stem is made of nitrided steel with surface nitriding treatment, increasing its hardness to HV850 or higher, offering superior corrosion resistance compared to ordinary stainless steel.
The valve disc adopts a double-gate structure with a universal joint in the middle, automatically adjusting the sealing surface fit. The valve discs are interchangeable during maintenance, reducing maintenance costs.
Electric Actuator
Equipped with a torque control mechanism, on-site operating mechanism, and manual-electric switching mechanism, supporting local operation, remote PLC control, and intelligent adjustment of 4-20mA current signals.
Protection level reaches IP67, adaptable to a wide temperature range of -40℃ to +85℃, with a motor life exceeding 100,000 opening and closing cycles.
Electric gate valve performance advantages:
Low fluid resistance:
The gate valve body is a straight-through type, ensuring consistent medium flow direction. Its flow resistance coefficient is only 1/3 that of a globe valve, making it suitable for high-flow-rate pipelines.
Bidirectional sealing and installation flexibility:
Gate valves are not restricted by the medium flow direction and can be installed horizontally or vertically, facilitating optimized pipeline layout.
High pressure and high temperature resistance:
Nominal pressure ratings cover CL150 (PN2.0MPa) to CL2500 (PN42.0MPa), and temperature range is -60℃ to +550℃, meeting the requirements of extreme operating conditions such as nuclear power and deep-sea mining.
Intelligent control:
Supports AI feedback signals and DO/AO control, and can be linked with SCADA systems to achieve automatic pipeline pressure regulation and emergency shut-off functions.
Electric gate valve Applications
| Industry | Application Scenarios | Core Requirements |
|---|---|---|
| Petrochemical | Crude oil/natural gas long-distance pipelines, control of reactors in refineries | High pressure resistance (10-42MPa), corrosion resistance (H₂S environment), zero leakage sealing, quick shut-off (response time ≤3 seconds) |
| Electric Power | Water supply pipelines for thermal power boilers, coolant pipelines of nuclear primary circuit | Ultra-high temperature resistance (500-600°C), radiation resistance (nuclear-grade gate valves must pass neutron irradiation tests), high reliability (MTBF ≥10,000 hours) |
| Municipal & Environmental Protection | Raw water intake pipelines of waterworks, zonal control of main gas networks | Large diameter (DN500-DN2000), low flow resistance, corrosion resistance (ductile iron + epoxy resin coating), remote monitoring |
| New Energy | Outlet of hydrogen storage tanks in hydrogen refueling stations, lithium battery slurry transportation pipelines | Hydrogen embrittlement resistant material (Inconel 625 alloy), ultra-low leakage rate (≤1×10⁻⁶ Pa·m³/s), cleanroom design (Ra ≤0.8μm) |
| Deep-sea Special | Subsea wellhead devices, cooling water pipelines of steelmaking blast furnaces | High pressure resistance (25-30MPa), low temperature resistance (-5°C to +10°C), seawater corrosion protection (nickel-aluminum bronze material) |
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