Choosing the Best 2-Way and 3-Way Electric Valves for Water & Gas
Wireless mesh network smart electric valve
Leveraging low-power wide-area networking (LoRaWAN and proprietary mesh), this smart electric valve forms an autonomous wireless grid across industrial sites without new cabling. Each valve node forwards encrypted status updates and command messages, allowing remote zone grouping, broadcast overrides, and localized peer-to-peer control. Battery life exceeds five years in typical duty cycles, with solar-assist options for sunlit installations. Integrations with SCADA and IIoT platforms use standard MQTT or OPC UA protocols, enabling centralized scheduling, flow analytics, and firmware multicasting. Perfect for sprawling irrigation systems, mining operations, or brownfield retrofits where wiring costs are prohibitive.
Ultra-micro fluidic electric valve
Engineered for nanoliter-scale precision, this microfluidic electric valve features a piezoelectric actuator and submicron nozzle geometry to regulate flows from 10 nL/min to 5 µL/min with ±1% accuracy. Its compact footprint integrates directly onto lab-on-a-chip cartridges, enabling automated assays in genomics, proteomics, and single-cell analysis. Biocompatible coatings prevent sample adhesion and cross-contamination, while built-in sensors measure pressure and temperature at the valve seat. Control software offers scripting APIs for complex dosing sequences and closed-loop feedback control. Ideal for pharmaceutical R&D, point-of-care diagnostics, and advanced analytical instrumentation.
ATEX/IECEx-certified explosion-proof electric valve
Designed for hazardous zones 1 and 2, this explosion-proof electric valve holds both ATEX and IECEx certifications, guaranteeing intrinsic safety in gas and dust environments. A ruggedized housing, flame-proof joints, and potting compound isolate internal electrical components from the process medium. External earthing terminals and redundant temperature sensors enhance safety compliance. Compatibility with Profibus PA, HART, and FOUNDATION ™ fieldbus allows seamless integration into petrochemical plants, offshore modules, and munitions facilities. Maintenance crews can perform live diagnostics and log retrieval via a sealed connector without breaching the flame barrier.
Magnetic-levitation silent electric valve
By suspending the valve rotor on active magnetic bearings, this design eliminates mechanical friction, wear, and the need for lubrication. Operation is virtually silent, with acoustic emissions below 25 dB, making it perfect for noise-sensitive settings like laboratories, OEM medical devices, or cleanrooms. Real-time position sensors and closed-loop control maintain submicron alignment, enabling ultra-smooth valve actuation and repeatable flow profiles. The all-electric actuator requires no pneumatic supply, simplifying system design. Long service intervals and debris-tolerant clearances further enhance reliability in harsh or contamination-controlled environments.
We Have The Best Solutions for Your Business
COVNA GROUP CO., LTD is a world-leading valve manufacturer which specialized in solenoid valves, pneumatic valves, and electric valves for pipeline fluid control. COVNA originated from German technology, has its own R&D, design, production, sales team, and aims to be the global automation application service provider.
COVNA production range includes solenoid valves, pneumatic valves, electric valves, gate valves, globe valves, butterfly valves, control valves, safety valves, and various special valves. COVNA products are widely used in Water & Waste water treatment, Automation, Petroleum, Chemical, Electric power, Metallurgy, Mining, Paper-making, Pharmaceutical Industries, etc.
COVNA team make a rapid response to customer's requirements, provide professional product selection guidance and reliable valve application solutions.So far, COVNA has achieved ISO 9001 Quality Management System Certification, CE Certification, RoHS Certification.
Why Choose COVNA
Global Expertise
COVNA delivers valve solutions to customers in over 120 countries, combining global market expertise with localized support to meet diverse industry needs and ensure reliable performance worldwide.
Advanced Technology
Backed by German technology, COVNA specializes in solenoid, pneumatic, and electric valves, providing innovative fluid control solutions designed for precision, efficiency, and long-lasting durability.
Strong Manufacturing
With a modern factory, CNC machining, and strict quality testing, COVNA ensures every valve meets international standards, delivering consistent reliability for water, oil, gas, and automation industries.
Trusted Brand
Recognized as a preferred supplier by global partners, COVNA has built long-term trust through consistent product quality, professional technical support, and comprehensive after-sales services.
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FREQUENTLY ASKED QUESTION
Do You Have Any Question?
An electric valve is a control element that uses electricity as a power source and opens, closes, or regulates a valve through a built-in motor or actuator. It is typically integrated into automation systems for remote control of the flow, pressure, or temperature of fluids (gas, liquid, steam, etc.).
The advantages are that they do not require a compressed air system, are easy to install, and are quiet, making them suitable for indoor or airless environments. The disadvantages are that they generally respond slower than pneumatic valves, are more dependent on a power source, and may cause system downtime in the event of a failure.
First, determine the media type, pressure, and temperature range. Then, select the valve body material (stainless steel, cast iron, etc.) and actuator model based on the required diameter, flow characteristics, torque requirements, and operating voltage (e.g., 24 VDC, 220 VAC).
Common voltages for electric valves on the market include 12 VDC, 24 VDC, 110 VAC, 220 VAC, and 380 VAC. Drive types are categorized as single-turn (ball valves, butterfly valves) and multi-turn (gate valves, globe valves). Reference the stroke and torque curves when selecting a model.
Before installation, ensure that the pipeline is free of impurities and properly supported. Ensure that the valve is in the manual open or closed position. When wiring, connect the power and control circuits strictly according to the wiring diagram, and adjust the limit switches or mechanical travel to the fully open or closed position.
