Manual Rising Stem Flanged Ceramic Knife Gate Valve

The Ceramic Knife Gate Valve is specifically engineered for isolation in the most hostile fluid environments, including highly abrasive mineral slurries, high-concentration powders, and corrosive chemical agents. Unlike traditional metal-seated valves, this model utilizes advanced Structural Ceramic (e.g., Alumina Oxide) components in the flow path.

The result is a valve with unrivaled wear resistance, extending service life dramatically in applications that rapidly destroy standard metal valves. The robust Flanged connection ensures a high-strength, secure tie-in to the pipeline, while the Manual Rising Stem provides reliable, direct control and position indication.

Key Features & Extreme Service Advantages

Feature Category	Technical Detail	Extreme Service Benefit
Material Performance	Structural Ceramic Flow Path	Unmatched Resistance to Abrasion and Erosion, outlasting hardened metal alloys by up to 5-10 times in services like fly ash, mineral concentrate, and acidic slurry.
Connection Security	Flanged Connection	Provides the highest strength and structural rigidity, ensuring a secure, leak-free connection critical for high-temperature or high-pressure systems.
Operation & Control	Manual Handwheel & Rising Stem	Offers reliable, direct control and a clear visual scale for unambiguous position indication, vital for process monitoring.
Flow & Design	Round Port & Full Bore	Ensures minimal flow disruption, reducing turbulence and localized wear while maximizing throughput.
Clogging Prevention	Bonnetless Design (Standard)	The simplified top structure prevents accumulation of dry powders or granular materials, maintaining smooth gate movement.

Ceramic Components & Sealing

Ceramic Gate: The sliding element is either fully ceramic or features a thick ceramic insert, designed to maintain a tight seal against the seat despite continuous impingement by abrasive media.
Ceramic Seats/Liner: The body is lined with a seamless, monolithic ceramic ring or sleeve, providing a complete, protected flow path that resists cutting and pitting.
Sealing: Typically utilizes a unique metal-to-ceramic or ceramic-to-ceramic seating arrangement for unparalleled service life and performance in extreme conditions.

Technical Specifications (Typical)

Parameter	Specification Range
Primary Material	Ceramic (Alumina Oxide / Zirconia) in Contact
Body Material	Cast Steel, Stainless Steel, or Duplex Steel
Connection Type	Flanged (ANSI 150/300 or PN10/16/25/40)
Actuation	Manual Handwheel (Optionally Bevel Gear)
Stem Design	Rising Stem
Service Temperature	High Temperature capable (Limited by soft packing/gaskets)

Target Applications for Maximum Service Life

This valve is the definitive choice for applications where replacement frequency is a major cost factor:

Mining & Metallurgy: High-velocity, abrasive concentrate slurry lines, chemical leaching, and mineral processing.
Power Generation: Isolation of highly abrasive fly ash, bottom ash, and lime slurry systems.
Chemical & Refining: Handling aggressive acids, caustics, and other corrosive fluids where stainless steel fails.
Pneumatic Conveying: Isolation points for abrasive materials like pulverized coal, cement, and minerals.

Customization Available: Contact us for options including Electric Actuators, Pneumatic Actuators, and specialized ceramics (e.g., Zirconia) for enhanced toughness and thermal shock resistance.