Flanged Soft Sealing Non-Lubricated Valve

The Flanged Soft Sealing Non-Lubricated Plug Valve is engineered for heavy-duty, reliable flow isolation in severe process environments. Utilizing a premium resilient soft seat combined with a precision-machined plug, this valve delivers bubble-tight (zero-leakage) shutoff without requiring sealant injection or routine lubrication. Its quarter-turn mechanics ensure low operating torque, minimal wear, and seamless automation integration. Serving as a high-efficiency alternative to traditional gate and ball valves, it significantly lowers the Total Cost of Ownership (TCO) in oil & gas, chemical, petrochemical, and water treatment systems.

Traditional lubricated plug valves demand constant sealant injection to maintain a seal and prevent seizing. Our advanced non-lubricated design eliminates these operational bottlenecks:
Zero Contamination: No grease or lubricants enter the pipeline, making it ideal for high-purity chemicals, downstream processing, and sensitive media.
Maintenance-Free Operation: Eliminates regular lubrication schedules, minimizing plant downtime and labor costs.
Cavity-Free Design: Unlike standard ball valves, there is no body cavity where solids or slurry can trap, accumulate, and cause valve jamming.
Bidirectional Sealing: Ensures reliable shutoff regardless of the medium's flow direction, offering high flexibility during piping layout design.

Every structural component is engineered to maximize operational safety, structural integrity, and service life:
Heavy-Duty Body: Available in high-strength cast or forged construction, optimizing pressure-retaining capabilities under severe pipe stress.
Anti-Blowout Stem: Designed in strict compliance with international safety standards to prevent stem ejection under high-pressure conditions.
Self-Cleaning Mechanics: The rotation of the plug wipes away suspended solids from the seating surface, preventing scoring and ensuring a clean seal every cycle.
ISO 5211 Top Flange: Standardized mounting pad allows direct and easy integration with pneumatic, electric, or hydraulic actuators without custom brackets.

This valve series is purposely built for harsh process industries where typical valves fail due to seat erosion, crystallization, or clogging. With over 50,000 units installed globally, our valves have a proven track record of running uninterrupted in critical international projects.
Key Sectors
Oil & Gas Exploration: Reliable upstream and downstream isolation for crude oil, refined petroleum products, and natural gas.
Chemical & Petrochemical Processing: Safe handling of highly aggressive media, solvents, organic acids, and alkalis.
Water & Wastewater Treatment: Excellent for grit-bearing water, sludge, and industrial effluent without cavity clogging.
Power Generation & Mining: Suitable for low-pressure steam, cooling water, and non-abrasive slurries.

We understand that every industrial project comes with unique engineering specifications. We offer comprehensive OEM, ODM, and custom manufacturing options:
Material Upgrades: Super Duplex, Monel, Hastelloy, and specialized anti-corrosion coatings for extreme environments.
Optional Safety Features: Fire-Safe Design (API 607 compliant), Anti-Static Devices, Stem Extensions for buried service, and Mechanical Locking Devices.
Branding & Asset Management: Custom nameplates, tag numbers, and OEM logo casting on valve bodies.

To guarantee trouble-free installation upon arrival at your project site, we adhere to strict quality control, international shipping standards, and full traceability.
Technical & Quality Documentation Provided
EN 10204 3.1 Material Certificate (Full heat traceability)
API 598 Pressure and Leakage Test Reports (Per serial number)
Hydrostatic and Air Testing Certification
Commercial Invoice, Detailed Packing List, and Certificate of Origin

Export-Grade Packaging
Thorough anti-rust oil treatment applied internally and externally.
Moisture-proof wrapping with robust bubble protection for critical flanged faces.Secured in heavy-duty, fumigation-free export plywood cases compliant with international maritime and air freight regulations.