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Full Bore Straight Through Blade Edge Cutting Knife Gate Valve for Mining and Slag Discharge
Full Bore Straight Through Blade Edge Cutting Knife Gate Valve for Mining and Slag Discharge
Specifications
Brand Name :
Lanjiang
Model Number :
DZF Series
Place of Origin :
China
MOQ :
1
Payment Terms :
T/T
Size Range :
DN50 ~ 2000mm
Working Pressure :
0.6, 1.0, 1.6 MPa
Soft Seal Temperature :
NBR: ≤80°C / PTFE: -40°C ~ 150°C
Ultra-High Temperature :
High Chrome-Nickel Steel: Up to ≤900°C
Standards :
Design: JB/T8691-1998 / Flange: GB/T9113.1-2000
Description
Full-Bore Straight-Through Blade-Edge Cutting Knife Gate Valve
Designed for mining slag discharge applications, this valve provides reliable performance in demanding industrial environments.
Product Overview
The Rising and Non-rising Stem Knife Gate Valve is a highly efficient isolation device engineered for handling high-concentration, solid-laden, or viscous media. Covering a wide size range from DN50 to 2000mm, it features a full circular straight-through channel design that completely eliminates slag accumulation and jamming risks.
The valve's core advantage lies in the blade-like bottom edge of the gate, which effortlessly cuts through soft materials like wood pulp and fibers, combined with a lifting sealing surface that automatically scrapes off sticky debris during operation. Its short face-to-face dimension saves installation space and supports pipeline strength, making it the perfect solution for paper mills, mining, and high-temperature slag discharge systems.
Technical Specifications
Category Specifications
Size Range DN50 ~ 2000mm
Working Pressure 0.6, 1.0, 1.6 MPa
Soft Seal Temperature NBR: ≤80°C / PTFE: -40°C ~ 150°C
Hard Seal Temperature Carbon Steel: -29°C ~ 425°C / Stainless Steel: -40°C ~ 600°C
Ultra-High Temperature High Chrome-Nickel Steel: Up to ≤900°C
Valve Structure V-shape or Triangle internal options / Short face-to-face length
Actuator Types Handwheel, manual zipper, spur gear, bevel gear, pneumatic, electric, and electro-hydraulic
Standards Design: JB/T8691-1998 / Flange: GB/T9113.1-2000
Key Applications
  • Pulp and Fiber Processing: Utilizing the strong cutting power of the blade-like gate to efficiently handle wood pulp, paper pulp, and fiber materials, preventing pipeline blockages.
  • Mining and Industrial Slag Discharge: Suitable for conveying gold ore powder, ore sand, coal slime, and asphalt. The high chrome-nickel steel configuration withstands ultra-high temperatures up to 900°C for power plant slag discharge.
  • Chemical and Wastewater Treatment: The stainless steel gate prevents corrosion-induced leaks, making it widely used for chemical sewage, sedimentation tanks, cement slurry, and slaughterhouse wastewater.
Frequently Asked Questions
Is the valve prone to jamming when handling viscous or solid-laden materials?
No. The valve features a full circular straight-through channel that prevents slag buildup. Additionally, the lifting sealing surface is designed to scrape off sticky materials from the gate, automatically clearing debris during operation.
Can this knife gate valve be used for flow regulation?
Yes. In addition to standard on/off applications, the internal structure of this knife gate valve can be customized into a V-shape or triangle to adapt to specific fluid regulation and control requirements.
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Full Bore Straight Through Blade Edge Cutting Knife Gate Valve for Mining and Slag Discharge

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Product Detail
Brand Name :
Lanjiang
Model Number :
DZF Series
Place of Origin :
China
MOQ :
1
Payment Terms :
T/T
Size Range :
DN50 ~ 2000mm
Contact Supplier
Full Bore Straight Through Blade Edge Cutting Knife Gate Valve for Mining and Slag Discharge

Nanjing Lanjiang Water Treatment Equipment Co., Ltd

Verified Supplier
1 Years
jiangsu, nanjing
Since 2001
Business Type :
Manufacturer
Main Products :
Industrial Tank Mixer, Sewage Aerator, Water Aeration Equipment
Total Annual :
40000000-70000000
Employee Number :
80~100
Certification Level :
Verified Supplier
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