DN800 Uni-Directional Rising Stem Wafer Manual Handwheel Knife Gate Valve
The DN800 Wafer Knife Gate Valve is engineered for reliable, manual on/off isolation in large-bore pipelines transporting corrosive or abrasive media, such as slurries, pulp, wastewater, and dry bulk materials. The space-saving Wafer design allows it to be installed easily between standard flanges, making it an efficient choice for large diameter, tight-space installations.
Featuring a Rising Stem for clear visual position indication and a robust Manual Handwheel for direct, reliable operation, this valve is a cost-effective and essential component for non-critical flow control applications. Its Uni-Directional sealing ensures zero leakage when pressure is applied from the designated side.
The DN800 Uni-Directional Wafer Knife Gate Valve is designed for reliable shut-off in large-diameter pipelines carrying liquids, slurries, or solids-laden media. With a compact wafer-style body, rising stem design, and manual handwheel operation, this valve is a cost-effective solution for industries that require secure isolation under challenging conditions.
Its uni-directional sealing ensures tight shut-off from one pressure side, making it suitable for wastewater, mining, and power plant applications where flow direction is controlled.
Key Features
Wafer Connection – Compact, lightweight design for easy installation between flanges.
Uni-Directional Sealing – Provides bubble-tight shut-off in one direction.
Rising Stem Design – Clear visual indication of valve position during operation.
Manual Handwheel Operation – Simple, reliable, and low-maintenance actuation method.
Robust Construction – Engineered for large-diameter service (DN800), handling heavy-duty operating conditions.
Technical Specifications
Size: DN800
Connection Type: Wafer (sandwiched between flanges)
Sealing Type: Uni-directional
Stem Design: Rising stem
Actuation: Manual handwheel
Body Material Options: Cast iron, ductile iron, carbon steel, stainless steel (customizable)
Seat Options: Resilient or metal seated, depending on service conditions
Pressure Rating: Available in standard industrial pressure classes (on request)
Typical Applications
The DN800 Uni-Directional Wafer Knife Gate Valve is ideal for industries handling abrasive, corrosive, or solids-laden media, including:
Wastewater Treatment – Sludge, raw sewage, and high-solid wastewater flows.
Mining Industry – Tailings, mineral slurries, and abrasive suspensions.
Power Plants – Flue gas desulfurization (FGD) systems, ash handling, and slurry transport.
Pulp & Paper – Fiber stock and viscous media.
Why Choose TOT Valve?
At TOT Valve, we specialize in manufacturing high-performance knife gate valves designed to meet demanding industrial requirements. With strict quality control, competitive pricing, and customizable options, we ensure our valves deliver long-lasting reliability and efficiency in every application.
📩 Contact us today to request a quote or technical datasheet for the DN800 Uni-Directional Wafer Knife Gate Valve.
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