Knife gate valve - Quickacting
A quick-acting gate valve is a valve used to shut off or regulate the flow of liquid in a pipeline. It is called "quick acting" because it can be opened or closed quickly with a manual or automatic mechanism. The name "knife gate valve" comes from the fact that the valve has a blade that moves up and down in the valve body to control the flow of the liquid. When the blade is raised, it opens the flow path and allows the liquid to pass through. When the gate is lowered, it blocks the flow path and prevents the fluid from flowing. Quick-acting gate valves are widely used in various industrial applications, such as water treatment, mining and wastewater management. They are also used where quick shut-off is required, such as in emergency shut-off systems.
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FM200 Knife-gate valve DN 150 NBR Cast iron Stainless steel Quick-action closing lever Product number: 270-1067-14
Wafer-type gate valve/flat slide valve DN 150 connection PN10, single-seated design, seat ring made of NBR, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever steel painted
Design :
sealing on one side
sealing on one side
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN150 - 6'' inch
DN150 - 6'' inch
Actuation :
Quick Release Lever
Quick Release Lever
Available, delivery time: in stock
FM200 Knife-gate valve DN 100 NBR Cast iron Quick-action closing lever Product number: 270-1067-12
Knife gate valve DN 100 - Quick closing gate valvePN10 connection, single-seated design, seat ring made of NBR, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever made of painted steel
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN100 - 4'' inch
DN100 - 4'' inch
Design :
sealing on one side
sealing on one side
Actuation :
Quick Release Lever
Quick Release Lever
Available, delivery time: in stock
FM200 Knife-gate valve DN 100 EPDM Cast iron Stainless steel Quick-release lever Product number: 270-1068-12
Wafer-type gate valve/flat slide valve DN 100 connection PN10, single-seated design, seat ring made of EPDM, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever steel painted
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on one side
sealing on one side
Nominal width :
DN100 - 4'' inch
DN100 - 4'' inch
Body:
Grey Cast Iron
Grey Cast Iron
Available, delivery time: in stock
FB700 Knife-gate valve DN 100 EPDM Cast iron GG25 Quick-action closing lever Product number: 270-3020-12
Knife Gate Valve DN 100 PN10Design bi-directional, seat ring made of EPDM with profile steel core reinforcement, body made of grey cast iron (GG25), gate plate & stem made of stainless steel, plate guide with integrated scraping effect, packing PTFE-Synt./EPDM/PTFE-Synt. with quick closing lever steel painted
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on both sides
sealing on both sides
Nominal width :
DN100 - 4'' inch
DN100 - 4'' inch
Body:
Grey Cast Iron
Grey Cast Iron
Available, delivery time: in stock
FM200 Knife-gate valve DN 250 NBR Cast iron Stainless steel Quick-release lever Product number: 270-1067-18
Wafer-type gate valve/flat slide valve DN 250 connection PN10, single-seated design, seat ring made of NBR, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever steel painted
Actuation :
Quick Release Lever
Quick Release Lever
Nominal width :
DN250 - 10'' inch
DN250 - 10'' inch
Body:
Grey Cast Iron
Grey Cast Iron
Design :
sealing on one side
sealing on one side
Available, delivery time: in stock
FM200 Knife-gate valve DN 200 NBR Cast iron Stainless steel Quick-action closing lever Product number: 270-1067-16
Wafer-type gate valve/flat slide valve DN 200 connection PN10, single-seated design, seat ring made of NBR, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever steel painted
Design :
sealing on one side
sealing on one side
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN200 - 8'' inch
DN200 - 8'' inch
Actuation :
Quick Release Lever
Quick Release Lever
Available, delivery time: in stock
FM200 Knife-gate valve DN 80 EPDM Cast iron Stainless steel Quick-release lever Product number: 270-1068-11
Quick-closing knife gate valve DN 80PN10 connection, single-seated design, seat ring made of EPDM, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever painted steel
Design :
sealing on one side
sealing on one side
Nominal width :
DN80 3'' inch
DN80 3'' inch
Body:
Grey Cast Iron
Grey Cast Iron
Actuation :
Quick Release Lever
Quick Release Lever
Available, delivery time: in stock
FM200 Knife-gate valve DN 150 EPDM Cast iron Quick-action closing lever Product number: 270-1068-14
Wafer-type gate valve DN 150connection PN10, single-seated design, seat ring made of EPDM, body made of grey cast iron (GG25), gate plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever painted steel
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on one side
sealing on one side
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN150 - 6'' inch
DN150 - 6'' inch
Available, delivery time: in stock
FB700 Knife-gate valve DN 200 EPDM Cast iron GG25 Quick-action closing lever Product number: 270-3020-16
Knife gate valve DN 200 PN10Design bi-directional, seat ring made of EPDM with profile steel core reinforcement, body made of grey cast iron (GG25), gate plate & stem made of stainless steel, plate guide with integrated scraping effect, packing PTFE-Synt./EPDM/PTFE-Synt. with quick closing lever steel painted
Nominal width :
DN200 - 8'' inch
DN200 - 8'' inch
Design :
sealing on both sides
sealing on both sides
Actuation :
Quick Release Lever
Quick Release Lever
Body:
Grey Cast Iron
Grey Cast Iron
Available, delivery time: in stock
FM200 Knife-gate valve DN 200 EPDM Cast iron Stainless steel Quick-release lever Product number: 270-1068-16
Wafer-type gate valve/flat slide valve DN 200 connection PN10single-seated design, seat ring made of EPDM, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever steel painted
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on one side
sealing on one side
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN200 - 8'' inch
DN200 - 8'' inch
Available, delivery time: in stock
FM200 Knife-gate valve DN 80 NBR Cast iron Stainless steel Quick-action closing lever Product number: 270-1067-11
Wafer-type gate valve/flat slide valve DN80 connection PN10, single-seated design, seat ring made of NBR, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever steel painted
Nominal width :
DN80 3'' inch
DN80 3'' inch
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on one side
sealing on one side
Body:
Grey Cast Iron
Grey Cast Iron
Available, delivery time: in stock
FM200 Knife-gate valve DN 50 NBR Cast iron GG25 Quick-action closing lever Product number: 270-1067-09
Quick-closing knife gate valve DN 50PN10 connection, single-seated design, seat ring made of NBR, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever painted steel
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on one side
sealing on one side
Nominal width :
DN50 - 2'' inch
DN50 - 2'' inch
Body:
Grey Cast Iron
Grey Cast Iron
Available, delivery time: in stock
FB700 Knife-gate valve DN 150 EPDM Cast iron GG25 Quick-action closing lever Product number: 270-3020-14
Gate valve - Knife gate valve DN 150 PN10Design bi-directional, seat ring made of EPDM with profile steel core reinforcement, body made of grey cast iron (GG25), gate plate & stem made of stainless steel, plate guide with integrated scraping effect, packing PTFE-Synt./EPDM/PTFE-Synt. with quick closing lever steel painted
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on both sides
sealing on both sides
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN150 - 6'' inch
DN150 - 6'' inch
Available, delivery time: in stock
FM200 Knife-gate valve DN 125 EPDM Cast iron Quick-acting gate valve Product number: 270-1068-13
Quick-closing gate valve - knife gate valve DN 125 made of GG25PN10 connection, single-seated design, seat ring made of EPDM, body made of grey cast iron (GG25), gate valve plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick closing lever steel painted
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on one side
sealing on one side
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN125 - 5'' inch
DN125 - 5'' inch
Available, delivery time: in stock
FM200 Knife-gate valve DN 65 EPDM Cast iron Quick-action closing lever Product number: 270-1068-10
Knife gate valve DN 65 PN10 connection, single-seated design, seat ring made of EPDM, body made of grey cast iron (GG25), gate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick-closing lever painted steel
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on one side
sealing on one side
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN65 - 2 1/2'' inch
DN65 - 2 1/2'' inch
Available, delivery time: in stock
FB700 Knife-gate valve DN 125 NBR Cast iron Stainless steel GG25 Quick release lever Product number: 270-3021-13
Wafer type knife gate valve DN 125 PN10Design bi-directional, seat ring made of NBR with profile steel core reinforcement, body made of grey cast iron (GG25), gate plate & stem made of stainless steel, plate guide with integrated scraping effect, packing PTFE-Synt./NBR/PTFE-Synt. with quick closing lever steel painted
Design :
sealing on both sides
sealing on both sides
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN125 - 5'' inch
DN125 - 5'' inch
Actuation :
Quick Release Lever
Quick Release Lever
Available, delivery time: in stock
FB700 Knife-gate valve DN 80 EPDM Cast iron GG25 Quick-action closing lever Product number: 270-3020-11
Wafer type gate valve DN 80 PN10Design bi-directional, seat ring made of EPDM with profile steel core reinforcement, body made of grey cast iron (GG25), gate plate & stem made of stainless steel, plate guide with integrated scraping effect, packing PTFE-Synt./EPDM/PTFE-Synt. with quick closing lever steel painted
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on both sides
sealing on both sides
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN80 3'' inch
DN80 3'' inch
Available, delivery time: in stock
FB700 Knife-gate valve DN 50 EPDM Cast iron GG25 Quick-action closing lever Product number: 270-3020-09
Wafer type gate valve DN 50 PN10Design bi-directional, seat ring made of EPDM with profile steel core reinforcement, body made of grey cast iron (GG25), gate plate & stem made of stainless steel, plate guide with integrated scraping effect, packing PTFE-Synt./EPDM/PTFE-Synt. with quick closing lever steel painted
Body:
Grey Cast Iron
Grey Cast Iron
Design :
sealing on both sides
sealing on both sides
Nominal width :
DN50 - 2'' inch
DN50 - 2'' inch
Actuation :
Quick Release Lever
Quick Release Lever
Available, delivery time: in stock
FM200 Knife-gate valve DN 300 EPDM Cast iron Stainless steel Quick-release lever Product number: 270-1068-20
Wafer type knife gate valve/flat knife gate valve DN 300 connection PN10single-seated design, seat ring made of EPDM, body made of cast iron (GG25), gate plate made of stainless steel SS304L (1.4306), stem made of stainless steel SS303 (1.4305), quick closing lever steel painted
Design :
sealing on one side
sealing on one side
Nominal width :
DN300 - 12'' inch
DN300 - 12'' inch
Body:
Grey Cast Iron
Grey Cast Iron
Actuation :
Quick Release Lever
Quick Release Lever
Available, delivery time: in stock
FB700 Knife-gate valve DN 65 NBR Cast iron GG25 Quick-action closing lever Product number: 270-3021-10
Wafer type knife gate valve DN 65 PN10Design bi-directional, seat ring made of NBR with profile steel core reinforcement, body made of grey cast iron (GG25), gate plate & stem made of stainless steel, plate guide with integrated scraping effect, packing PTFE-Synt./NBR/PTFE-Synt. with quick closing lever steel painted
Actuation :
Quick Release Lever
Quick Release Lever
Design :
sealing on both sides
sealing on both sides
Body:
Grey Cast Iron
Grey Cast Iron
Nominal width :
DN65 - 2 1/2'' inch
DN65 - 2 1/2'' inch
Available, delivery time: in stock
Fergo plate valve: That’s what a quick closing damper offers
If one is up to the task of providing a reliable seal by endeavouring he/she should go for a quick closing valve – also known as a plate valve. Here, the FERGO slide gate is a particularly rational material solution because it provides an obstacle to the different types of fluids, gases, and bulk solids within an industrial facility, such as an industrial workshop where liquids, gases, or solids are to be securely regulated.
Mechanical aspects of the FERGO quick-closing valve
The FERGO slide valve is available in valve sizes from DN50 to DN300 and possesses a durable construction that is made of high-quality materials to guarantee operation in most demanding conditions. The housing made of high-quality GG25 cast iron gives stability and tough construction. The slide blade with stainless steel SS304L (1.4306) is not only resistant to corrosion but also tight while the spindle made of stainless steel SS303 (1.4305) insures a backlash-free, stable driving action. The quick closing valve, as the principal component the slide as a one-piece in a flange intermediate design, can be dully made in a way ensuring to seal on one or both sides of the equipment. It is designed for insertion between or on flanges according to PN10 and has to last the maximum pressure of 10 bar.
The Gaskets and their Temperature resistance
In order to adjust the seat ring to different media and application fields, you get either NBR or EPDM amazingly. The set consists of the PTFE synthetic and NBR or PTFE synthetic and EPDM combined together for a sure seal. The plate shutter can also be used in the temperature range of -20 deg celcius to +90°C making it quite versatile. Quick closing valve for effortless actuation The exciting feature of this quick closing valve is the painted steel lever. The job could be done in a smart way, with the main advantage of enabling you to rapidly operate the shutdown blade. In other words, it gives you the option to be fast when it counts.
FERGO Quick Closing Sluice Valve – the Essentials in a Nutshell
When it comes to industrial damming solutions, the FERGO Quick Closing Valve is an example of being unbeatable in quality, robustness, and operation. Its premium materials, possibility of gasket variations and easy maneuverability make it a huge success story during your individual stopping operation as well. It is also the main reason why it is as well as the rest of the required infinitives.
FAQ about the knife gate valve
A knife gate valve is a valve designed to cut through thick liquids and slurries. It has a sharp, bevelled edge (similar to a knife) on its blade, which enables it to efficiently cut through media with a high viscosity or high solids content.
A knife gate valve works by raising or lowering a gate (the gate plate) to start or stop the flow of fluid. When the gate is raised, fluid flows through the valve. When the gate is lowered, the flow is blocked. The sharp edge of the gate valve helps to cut through deposits or blockages in the pipework.
The most important components of a knife gate valve include
- Body: The main structure that houses the gate valve and the flow channel.
- Gate valve: The moving part that opens and closes to control the flow.
- Seat: Provides a sealing surface for the gate to ensure a tight seal.
- Stem: Connects the gate valve to the actuator (manual or automatic).
- Actuator: Mechanism for moving the gate valve, which can be manual (handwheel), pneumatic, hydraulic or electric.
Knife gate valves are often used in industries where slurries, viscous liquids and bulk materials are processed, such as
- Mining Pulp and paper
- Waste water treatment
- Food and beverage industry
- Chemical processing
- Bulk solids technology
- Biogas plants & more
- Effective for handling slurries and solids: The knife edge can cut through thick media without clogging.
- Low cost and simple design: These valves are generally less expensive and simpler in design than other valve types.
- Minimised pressure drop: When the valve is fully open, it provides a straight flow path with low resistance.
- Easy maintenance: The simple design facilitates disassembly and repair.
- Not suitable for high-pressure applications: They are generally not suitable for high-pressure applications.
- Limited to on/off operation: Knife gate valves are not ideal for throttling or regulating the flow.
- Sealing problems: They cannot close tightly under all conditions, especially in high-pressure or vacuum applications.
Tips for the maintenance of knife gate valves:
- Regular inspection: check regularly for wear, especially on the gate valve and seat.
- Lubrication: Ensure that the spindle and other moving parts are properly lubricated to prevent corrosion and ensure smooth operation.
- Cleaning: Remove all debris and dirt from around the gate and seat to prevent clogging and ensure a good seal.
- Replacing worn parts: Replace worn or damaged parts immediately to prevent leaks and maintain functionality.
While knife gate valves are primarily designed for liquids and slurries, they can also be used for gases in certain low pressure applications. However, they are generally not recommended for gases due to potential sealing problems.
Knife gate valves can be made from different materials depending on the application, e.g:
- Stainless steel: For corrosion resistance and durability.
- Cast iron: For general purpose applications with less corrosive media.
- Nodular cast iron: Offers higher strength and impact resistance than cast iron.
- Special alloys: For handling aggressive chemicals and high-temperature applications.
Consider the following factors when selecting a knife gate valve:
- Type of media: make sure the gate valve material is compatible with the fluid or slurry.
- Pressure and temperature: Check the pressure and temperature ratings of the gate valve to ensure they meet the application requirements.
- Size and flow requirements: Match the valve size to the piping and flow rate.
- Operating mode: Determine whether manual, pneumatic, hydraulic or electric actuation is required.
- Industry standards: Ensure that the valve fulfils the relevant industry standards and certifications for your application.