MF SEries
The MF is a universally applicable knife gate valve with a central flange design that will just about satisfy the customer's every need. As well as featuring the integrated Wey sealing system, the robust, modular design of the series is particularly advantageous. Choose from a variety of materials, add-on parts, and actuator options across the entire nominal size range. A true all-rounder.
CHARACTERISTICS MF Series
Nominal sizes
Material
Pressure rating
Flange drilling
Face to face dimension
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Robust 4-post topwork for maximum load and a wide variety of actuator types.
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A unique transverse seal, consisting of a transverse seal profile and packing compound, makes the body bubble-tight towards the atmosphere.
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The transverse seal can be repacked at any time and under full pressure using the lateral packing screws.
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A mechanically retained round cord seal creates a bubble-tight shut off on the gate edge.
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Optimized chest design to minimize the build-up of solids due to gate geometry.
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With its optimized gate geometry, accumulated media is pushed out of the gate guide and flushed out into the bore by the increased flow.
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The gate is mechanically guided over the full stroke.
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In the closed end position, the gate is also mechanically supported.
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Most known pipe-cleaning methods (e.g., pigs, brush cylinders, etc.) can be used with the body bore, resulting in minimal pressure drops.
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The non-rising stem in the manual actuator saves space and provides good mechanical power transmission.
Application areas
Biogas plants
e.g.
Food waste, Household waste, Wood chips, Manure, Substrates, Other renewable resources
...
Mining
e.g.
Coal dust, Mining slurry, Sinter water, Tailings, Lime powder
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Chemical and petrochemical industries
e.g.
Viscous pastes, Granulates, Bitumen/tar
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Infrastructure
e.g.
Waste water, Rainwater, Industrial water, Mixed water
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Coal fired power stations
e.g.
Coal dust, Coal slurry, Lime powder, Flue ash
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Pulp and paper industry
e.g.
Pulp Stock (Low to high density), Liquor (black, white, green)
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Waste water treatment plants
e.g.
Waste water, Raw water, Sludge, Digested sludge, Floating sludge
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Water treatment
e.g.
Seawater
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Cement industry
e.g.
Cement, Lime powder
...
Case Study – Thermal lake water system Lausanne
Knife gate valve MF in full bore design for the main inlet of Switzerland's largest lake water heat pump
PDFMATERIAL OF CONSTRUCTION
| Part | Cast iron | Stainless steel |
| Body | EN-GJS-400-15 | EN-GJL-250 |
| Gate | 1.4301 | 1.4301 |
| Seal | NBR | NBR |
| Topwork | Carbon steel | Carbon steel |
| Stem / Piston rod | 1.4104 | 1.4104 |
Other materials upon request
CORROSION PROTECTION
| Body | 2 Comp. Epoxy-Polyamide Resin Primer, 2 Comp. Polyurethane-Enamel-Top Coat | |
| Topwork | 2 Comp. Epoxy-Polyamide Resin Primer, 2 Comp. Polyurethane-Enamel-Top Coat | |
actuators
Handwheel
Bevel gear
Pneumatic cylinder
Hydraulic cylinder
Electric actuator
General documents
Data Sheets
CAD files
- MF with handwheel 2D (DXF/DWG)
ZIP - MF with handwheel 3D (STEP)
ZIP - MF with bevel gear 2D (DXF/DWG)
ZIP - MF with bevel gear 3D (STEP)
ZIP - MF with pneumatic cylinder 2D (DXF/DWG)
ZIP - MF with pneumatic cylinder 3D (STEP)
ZIP - MF with electric actuator 2D (DXF/DWG)
ZIP - MF with electric actuator 3D (STEP)
ZIP - MF with hydraulic cylinder 2D (DXF/DWG)
ZIP - MF with hydraulic cylinder 3D (STEP)
ZIP
News & Stories
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Remote controllable
Operating a valve can’t get any easier than with these knife gate valves MF DN 125. They are equipped with limit switches and solenoid valves for remote control, wired in a junction box for easier handling. Along with five others, these valves are soon being installed in a waste-to-energy plant in Dubai.
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Double Transverse Seal
Special equipment for special conditions: These MF knife gate valves with pneumatic actuator have been fitted with a double transverse seal to guarantee 100% tightness even under the most difficult conditions.
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Full Bore
Fullbore for all cleaning methods: For a thermal lake water plant, the body of this knife gate valve was specially manufactured to allow pigs to pass through with ease.
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For high temperature areas
This knife gate valve MF DN 1600 was made for applications where temperatures can reach up to 230°C. Its body has a heat resistant coating and the gate is made of a special stainless steel, which optimally matches the thermal behavior of the cast iron body. This knife gate valve willl soon be installed in a coal-fired power plant in India.
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Double performance
This twin knife gate valve was produced on specific customer request. It will be installed in adjacent pipelines and always keeps one of the lines open and the other closed. This allows precise control of the medium flow. At the same time, the design saves space and costs.
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Submerged
This knife gate valve DN 1200 had to be installed under water. It shuts off the main inlet of a thermal lake water plant in Switzerland.
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Safety distance for high temperatures
To ensure that these knife gate valves can be operated without risk even when the medium in the pipelines is extremely hot, the topwork has been extended by a safety distance of several centimeters.
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Secret weapon PTFE
To rule out all possibilities of media sticking from the outset, the passage and gate of these knife gate valves MF DN 100 have been coated with PTFE. The seal is also made of non-sticking PTFE.
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Backup plan for emergencies
These knife gate valves MF DN 250 are regularly operated by pneumatic cylinder. In case of failure of the electric power or compressed air supply they can be operated manually by handwheel.
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Regulated flow on a large scale
A total of 12 knife gate valves MF with a nominal size of DN 1200 are currently being produced at our production site in Eschenbach. Two of them are equipped with V-notches for flow regulation. The additional wear plates can be replaced easily when worn out.
