Flow Control, Zero Compromise
From municipal water to industrial flow systems — total reliability starts here.
From deep wells to pipelines and wastewater treatment, Norite delivers efficiency, durability, and trust in every drop.
- 5-Year Warranty
- ISO 9001 Certified
- 24/7 Support
Knife Gate Valve
Superior solids/slurry handling
The knife-shaped gate can shear through slurry, sludge, pulp, fibers, sand and other solids, ensuring tight shut-off even in high-solid or mixed media applications. Gunmetal bronze seat and face rings are machined to a high finish for optimum contact and minimal leakage.
Full-bore, low-pressure drop & unobstructed flow path
When fully open, the valve offers a clear flow path with minimal pressure loss, ideal for high flow-rate systems.
Compact, lightweight & easy to install/maintain
Simpler design and lighter weight than conventional gate valves makes them easier to transport, install, and maintain.
Wear- and corrosion-resistant construction with versatile materials and sealing options
Available in stainless steel, cast iron or special alloys, with metal or elastomeric seats to suit sewage, chemical, slurry, pulp and abrasive media.
Need custom specifications? Our engineers are ready to help.
Call: +86 15090163952 | Email: lisa@noritesolution.com
Proven Results That Drive Your Bottom Line
Real performance data from our Valve installations across critical industries worldwide
100% Pressure Tested
Tested under Class A sealing standard, across 10,000+ units.
20+ Years Lifespan
Proven performance in seawater, wastewater, and high-pressure pipelines.
8,000+ Valves Installed
Including power plants, municipal water systems, and industrial zones.
99.5% On-Time Delivery
Backed by lean production and strict QC.
Certifications & Standards
Technical Specifications
Engineered for optimal performance across a wide range of industrial applications
Model:
Size Range:
QB、QC、QU、QW、QV
DN50 – DN1200,2”-48”
Pressure Rating:
Standards:
JB/T8691-1998,DIN3352
Media:
Max Temperature:
Clear water, sewage, slurry, pulp, mineral pulp, etc
Body Material:
Wedge Material:
Ductile iron, Carbon steel, Stainless steel, Alloy steel
Carbon steel, Stainless steel, Alloy steel
Stem Material:
Sealing:
Stainless steel
Connection:
Drive methods:
Flanged to EN1092-2，ANSI B16.5,BS4504
- Application Conditions
Municipal & industrial wastewater treatment — Isolation of sewage, sludge and waste streams containing fibers, sediments, and suspended solids.
Pulp & paper industry — Control of pulp slurry, fiber suspensions, and processing lines.
Mining & mineral processing — Suitable for ore slurry, tailings, sand/stone slurry and abrasive media pipelines.
Chemical industry & wastewater treatment — Handling corrosive or abrasive chemical waste, solid-laden effluents, and mixed waste streams.
Cement / Construction slurry transport — Conveyance and shut-off for high-solid, high-viscosity slurries used in cement, building materials, and mining.
Biomass / Waste / Sludge handling systems — Reliable isolation in lines dealing with fibrous, solid-laden or compacted media (e.g. biogas, sludge dewatering).
- Valve structure diagram
- Valve size data sheet
Testing Process
From raw materials to finished products, NORITE maintains 100% testing coverage, ensuring that every valve and pump you receive is built to last — safe, stable, and globally certified.
Pressure Testing
Each valve undergoes rigorous pressure and hydrostatic testing prior to shipment to verify body strength, sealing integrity, and pressure stability—ensuring zero leakage and long-term reliability in field operation.
Torque and Functional Testing
Confirming operating performance and precision.
Cycle Life Testing
Simulating long-term use under real working conditions.
Coating & Corrosion Resistance Testing
Validating surface protection and durability.
Dimensional & Material Analysis
Using spectrometers and coordinate measuring machines (CMM) for accuracy.
Traceability - Unique product code
Each product leaving our factory is accompanied by a full inspection report and a unique serial number, enabling full traceability and lifetime quality tracking.
Real Project Cases
Proven performance in critical applications worldwide – see our valves in action
Indonesia Water project
- Jakarta，Indonesia
- Key indicators:
Backed by our strong experience in water infrastructure and well-coordinated supply chain, we customized the delivery schedule and configurations based on site requirements and contractor progress. This helped minimize installation risks and ensured timely project advancement.
- The type of equipment adopted:
For the renovation of the urban sewage pipeline project, we provided DN800 knife gate valves to replace the old ones.
Achieved effects: Reduced clogging, extended lifespan, lower maintenance frequency, and enhanced system stability.
Get Your Custom Quote
Our technical experts will analyze your requirements and provide a tailored solution with detailed specifications and competitive pricing.