Ceramic Knife-Type Gate Valve KPZ73TC

Valves of this type should generally be installed horizontally in piping systems.

KPZ73TC

Keyword: Ceramic Knife-Type Gate Valve KPZ73TC

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Wear-resistant series

Ceramic-lined knife gate valve

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When a gate valve is closed, the sealing surfaces rely solely on the pressure of the medium to achieve a seal—specifically, the sealing surface of the gate is pressed against the valve seat on the opposite side by the medium’s pressure, thereby ensuring a tight seal. This type of sealing is known as self-sealing. By contrast, most gate valves employ forced sealing: when the valve is closed, an external force is used to press the gate against the valve seat, guaranteeing the sealing performance of the sealing surfaces. Such valves should be installed vertically in the pipeline.

Performance

1. The valve can be locally and remotely controlled according to user requirements, and can also provide remote and centralized display.

2. Lightweight: The valve body is made of carbon steel, making it approximately 20%–30% lighter than conventional gate valves, which facilitates installation and maintenance.

3. Using this type of valve can enhance the sealing performance of pipeline systems, minimizing leaks to the greatest extent possible, thereby playing a positive role in improving production efficiency and protecting the environment.

4. The sealing surface is designed with a highly wear-resistant and corrosion-resistant ceramic composite material, using an inlaid technology. This results in superior corrosion resistance and excellent wear resistance, significantly extending the service life of China’s valves and increasing their cost-effectiveness by a factor of 10 compared to conventional valves.

Ceramic knife gate valve

KPZ73TC

■ Product Overview

Ceramic valves are suitable for high-hardness particles such as... ( Ash and slag water, coal powder ) It is used for opening and closing pipelines conveying media that are either non-corrosive or contain soft particles yet remain corrosive. The sealing surfaces are made of high-grade, toughened industrial ceramics with exceptional chemical stability and hardness, as well as outstanding resistance to wear, corrosion, and erosion. These ceramics also offer excellent thermal insulation, low thermal expansion, high mechanical strength, low actuation torque, minimal ash accumulation and coking, and a long service life. The solid valve body design effectively prevents valve body perforation and external leakage caused by high-velocity media flow.

Ceramic knife gate valve

KPZ73TC

■ Product Overview

Ceramic valves are suitable for opening and closing pipes carrying high-hardness particles, such as ash, slag water, pulverized coal, or soft particles that are nevertheless corrosive. The sealing surface is made of high-grade toughened industrial ceramics, which exhibit exceptionally high chemical stability and hardness. These valves offer outstanding wear resistance, corrosion resistance, and erosion resistance. Additionally, they feature excellent thermal insulation, minimal thermal expansion, high mechanical strength, low starting torque, reduced ash jamming and ash deposition, and a long service life. The solid valve body design effectively prevents valve body perforation and leakage caused by high-speed media erosion.

Molding process	Aluminum oxide 95 Ceramic – Main Chemical Composition Content
Isostatic pressing	ZrO2: 94.6% Y2O3: 4.7-5% R2O: 0.4-0.7%
Ceramic Performance Parameters
Volumetric density g/cm3	Flexural strength (MPa)	Compressive strength (MPa)	Tensile strength (MPa)	Average linear thermal expansion coefficient
6.02g/cm	998	2100	400	10.5x10/C
Matching valve parameters
Main material	QT450, WCB, CF8, CF3M, 2205
Nominal diameter	DN50-DN1000
Applicable temperature	-29~+350℃
Operation method	Manual, electric, gear-driven, pneumatic, manual-pneumatic, hydraulic, electro-hydraulic, sprocket, lever
Applicable medium	Pulp, sewage, coal slurry, ash, granules, dust, and slag-water mixtures