WIVO VALVES presents a high-performance electric actuated cast iron knife gate valve, designed for demanding industrial applications where reliable shut-off of abrasive, viscous, or slurry media is required. The DN200 (8-inch) model WKGE-200-E combines rugged construction with advanced automation capabilities, making it ideal for wastewater treatment, mining, pulp & paper, chemical processing, and power plants.
● Body Material: High-grade cast iron (GG25/EN-JL1040) with corrosion-resistant epoxy coating (optional: polyurethane or Xylan coating for aggressive environments).
● Blade: Precision-machined stainless steel (SS304/SS316) with a sharp, beveled edge for smooth cutting of fibrous and particulate-laden fluids.
● Seat: Resilient EPDM/NBR (standard), with options for Viton, PTFE, or ultra-high-molecular-weight polyethylene (UHMWPE) for chemical resistance.
● Stem: Stainless steel (SS304/SS316) with anti-blowout design for safety.
● Packing: Graphite-reinforced gland packing ensures leak-free operation under high-pressure cycling.
● Type: Multi-turn electric actuator (on/off or modulating control).
● Voltage Options: 24V DC, 110V AC, 220V AC, 380V AC (other voltages available upon request).
● Control Signal: 4-20mA, PROFIBUS, Modbus RTU, or HART protocol for seamless integration into SCADA/DCS systems.
● Torque Output: Adjustable torque settings to prevent valve damage.
● Protection Class: IP67/IP68 (waterproof and dustproof), explosion-proof versions (ATEX/IECEx) available.
● Manual Override: Integrated handwheel for emergency operation during power failure.
● Size Range: DN200 (8") – other sizes (DN50 to DN1200) available.
● Pressure Rating: PN10/PN16 (150 psi) standard; higher ratings (PN25/PN40) upon request.
● Temperature Range: -20°C to +120°C (standard seat); -40°C to +200°C with high-temperature materials.
● Flow Direction: Bi-directional (recommended flow direction marked on valve body).
● Leakage Class: Zero leakage (Class VI per EN 12266-1) for bubble-tight shut-off.
● Flange Standard: EN 1092-2 (PN16), ANSI B16.1 (Class 125/250), AS4087 (waterworks), or AWWA C509 (custom flanges available).
● Face-to-Face Dimensions: Complies with ISO 5752 (EN 558 Series 20) for easy replacement.
● Actuator Mounting: ISO 5211 compliant for quick actuator interchangeability.
Slurry & Abrasive Media Handling – Mining, dredging, tailings.
Wastewater & Sewage Treatment – Primary/secondary settling, sludge control.
Pulp & Paper Industry – Stock flow regulation, reject handling.
Chemical & Petrochemical – Acid/alkali slurry isolation.
Power Plants – Fly ash, bottom ash transport systems.
Heavy-Duty Construction – Reinforced body design for long service life in abrasive conditions.
Low Operating Torque – Energy-efficient electric actuator reduces power consumption.
Fail-Safe Options – Spring-return actuators for open/close fail-safe positions.
Easy Maintenance – Top-entry design allows seat and blade replacement without removing the valve from the pipeline.
Anti-Cavitation Design – Optimized flow path minimizes turbulence and vibration.
● ISO 9001:2015 – Quality management system certified.
● CE, RoHS, REACH – Compliant with EU directives.
● AWWA C517 – Meets waterworks standards (optional).
● ATEX/IECEx – Available for hazardous area installations.
● Limit switches & position transmitters (for remote indication).
● Heating jackets (for freeze protection in cold climates).
● Positioner & smart controller (for precise flow modulation).
● Locking device (for safety in high-vibration environments).
◆ 30+ Years of Valve Manufacturing Expertise
◆ Custom Engineering Solutions (special materials, sizes, and actuation).
◆ Global Supply & After-Sales Support
◆ Competitive Lead Times & OEM/ODM Services
Whatsapp:+86-15963008926
Email:peter@wovalves.com
Tel:+86-17657183695
Address
South of Shenzhen Road East of Guangzhou Road, Pingdu City, Qingdao Province, China
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