Description
Manufactured by ENMAK Makina, the handwheel knife gate stock valve is a highly durable industrial valve designed to control the flow of stock, fibrous fluids and solids-laden process liquids in the paper and pulp industry. Operated manually by handwheel, the valve’s sharp knife closure cuts through fibers and contaminants to provide tight shut-off. Built with engineering expertise dating back to 1975, our knife gate stock valves serve the process lines of paper mills for years with a stainless steel body, a durable blade and dependable sealing performance.
Working Principle
The handwheel knife gate valve works by a sharp-edged steel blade moving vertically inside the body to close or open the flow channel. Turning the handwheel clockwise drives the blade down the valve stem, cutting across the line for full closure; turning it the other way lifts the blade and opens the line.
The sharp blade geometry cuts through fibers, strings, plastic pieces and other contaminants in the stock, eliminating leakage risk on closure. This solves the clogging and leakage problems that conventional ball and butterfly valves suffer with fibrous fluids such as pulp.
A special seat sealing system in the blade housing keeps the valve leak-tight under high pressure in both open and closed positions. Manual operation requires no electrical or pneumatic infrastructure, offering easy maintenance and operational security.
Key Features
- Sharp-Blade Tight Shut-Off
The steel blade closes by cutting through fibers and contaminants in the stock — eliminating the clogging and leakage problems of conventional valves. - Handwheel Manual Operation
Easily opened and closed by the operator at the handwheel. With no electrical, air or hydraulic system required, failure risk is low and operation is energy-independent. - Stainless Steel Body
Made from corrosion-resistant stainless steel, delivering long service against pulp, chemical additives and humid process conditions. - Special Sealing System
Seals in the blade housing remain tight even under high pressure — zero-leak performance in the closed position. - Wide Size Range
Manufactured from DN50 to DN500 to match your pipe diameter and flow capacity. - Low Maintenance
A simple mechanical design makes routine maintenance easy; replacement blades and seals ship quickly from our stock. - Flanged Connection
Flanged to TS ISO 7005-1 / EN 1092-1, fitting your existing pipelines without complications.
Applications
The handwheel knife gate stock valve serves on every industrial process line where fibrous, solids-laden fluids must be controlled. It is above all an indispensable piece of equipment in the paper industry.
Main application areas:
- Paper & Pulp Mills
Flow control at pulper outlets, stock transfer lines, headbox feed lines and stock chest connections. - Stock Preparation Lines
Preferred for safely isolating stock flow on the inlet and outlet lines of hydrapulpers, broke pulpers and agitator systems. - Recycling Plants
Operating reliably on mixed stock lines in recovered paper plants, where plastics, strings and other contaminants may be present. - Board & Corrugated Production
Flow control during stock transfer on test liner, fluting and corrugated board lines. - Wastewater & Sludge Lines
Isolation duty on fiber- and solids-laden sludge lines in the effluent treatment units of paper mills. - Chemical Process Plants
Also used with confidence on process lines in the paint, chemical and food sectors handling dense, fibrous or sticky fluids.
Why ENMAK Makina
Engineered for heavy-duty conditions, ENMAK Makina steel belt scrap conveyors become a dependable part of your production line with durable construction, uninterrupted conveying capacity and long service life. Prioritising efficiency and operational safety in recovered paper handling, ENMAK Makina stands beside you with engineering experience and quality manufacturing.
ONE STEP TO THE SOLUTION
The right solution for your project is just one step away.
From the paper industry to heavy manufacturing, we deliver solutions tailored to your project with engineering expertise dating back to 1975. Contact us for a detailed quotation or to discuss your technical requirements — our engineering team will get back to you promptly.
Category: Stock Valves
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