Full product list

Operating principle and use

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Here are all our products:

Belt scale SRT

Operating principle and use

The Belt Scale is a weighing machine designed to acquire continuous material flow handled by a belt conveyor and by the integration of flow rate to determine the totalized amount of material.

The weight of the material on a belt length called “weighing length” is measured by one or two Strain Gauge Load Cells. The belt speed is measured by an incremental encoder or a proximity detector located on the conveyor’s driven drum

The SRT Belt Weigher was designed by SAUTELMA to meet the high accuracy required by their customers. The weight collection system incorporates 2 parallel sets of flexures supported by one or two strain gauge load cells. The design of the weight collection system ensures that the weight is transferred correctly into the load cell, to optimise the weighing performance.

The SRT belt scale can have single idler or double idler scale (SRT/1R et SRT/2R)

It consist of three main parts :

  • Weight collection system model SRT
  • Load cells, speed detector and signal processing unit
  • Digital electronics control system

Weighing belt conveyor TSRT

Operating principle and use

The SAUTELMA ROTOLOK TSRT Weighing Belt conveyor is used for continuous conveying and weighing of bulk materials.

The TSRT weighing conveyor is a mine type belt conveyor with integrated single or double roller belt scale.

The weighing conveyor is used in many industries to control the production but Sautelma also offers a highly accurate model with integrated  double roller belt scale that can be used for commercial weighing (transactions).

The Weighing belt conveyor consist of four main parts :

  • Mine type belt conveyor
  • Standard drive unit by AC gear motor
  • Single or double roller station belt scale with:
    • Load cells, speed detector and digital signal processing unit
    • MiniSmart electronics control system

Hopper bulk weigher BCSR

Operating principle and use

The Bulk Hopper Weigher is a continuous weighing equipment which acts as discontinuous totalizer with non-constant batch weighing.

The weighing is made by a weighed hopper headed by a buffer hopper that collects the product during the weighing and emptying stages of the weighed hopper.

This equipment is especially well fitted for commercial transactions and highly accurate weighing of free flowing materials (cereals, fertilizers…) for ship loading & unloading applications.

The weighing cycle is managed by MiniSmart digital weighing controller (indicator):

The BCSR Bulk Hopper Weigher (tower) consist of folowing main parts:

  • Supporting frame (tower) adapted to the scale dimensions and weight.
  • Feeding (upper) hopper (silo) with one inlet chute and outlet flange
  • Clam Shell Gate pneumatically actuated which can be single, double or triple gate assembly.
  • There are two sets of gates, one for filing the weigh hopper and one for emptying the weighing hopper.
  • Weighing Hopper supported by 4 load cells fitted on a rectangular frame.
  • This weighing frame is supported by main tower frame.
  • Discharge (lower) hopper which deliver the material generally onto a belt
  • Conveyor which transfer it to the destination.
  • Weighing & Control command device including:
    • 4 highly accurate load cells
    • Digital signal amplifier
    • MINISMART OIML approved digital weighing indicator

Silo & hopper weighing

Operating principle and use

As a general industrial weighing supplier, Sautelma Rotolok provides equipment and performs the engineering for silos and hoppers weighing equipment.

The weight range is very wide and may extend to silos of 1000 tons. Most of our static weighing systems are homologous by OIML (International Organisation of Legal Metrology).

Silo & hopper weighing

The MINI Belt weigh feeder

Operating principle and use

The belt weigh feeder extracts a product from a storage hopper through the constant cross-section and according to a fixed reference flow-rate (set point), adjusts the extracted volume by varying the belt speed in such a way as to keep a constant weighed flow-rate.

The Mini belt weigh feeder is used for the continuous weighing and feeding of all type of granules and powders flowing normally.

It can be used in:

  • Food industry: Cereals, cocoa, biscuits, pasta, pet-food,
  • Chemical Industry: Detergent, Pesticides, Fertilizers, Carbonate,
  • Building materials: Barite, Manganese (MnO2), Carbonate (CaCO3),
  • Plastics : PVC, compound, fiber,

 

The DLN Belt weigh feeder

Operating principle and use

The belt weigh feeder extracts a product from a storage hopper through the constant cross-section and according to a fixed reference flow-rate (set point), adjusts the extracted volume by varying the belt speed in such a way as to keep a constant weighed flow-rate.

The DLN belt weigh feeder is used for the continuous weighing and feeding of materials with normal or difficult flowability.

  • Cement Industry: Limestone, Clay, Pyrite, Clinker, Gypsum, Slag…
  • Steel Industry: Iron ore, Coke, Additives
  • Coke production: Coal, Additives
  • Chemical Industry: Raw and humid phosphate, Sulphur, Potash, Urea, Fertilizers, Carbonate
  • Building materials: Plaster, Lime, Clay, Sand, Barite, Manganese, Grits
  • Aluminum: Petrol coke, raw and burnt scraps, Pitch, alumina, lime…
  • Tobacco: Tobacco and Scaferlati

The DLF Belt weigh feeder

Operating principle and use

The DLF belt weigh feeder extracts the material from a feed chute colling "calming chamber" through the constant cross-section and according to a fixed reference flow-rate (set point), adjusts the extracted volume by varying the belt speed in such a way as to keep a constant weighed flow-rate. In the “calming chamber” the material is slowed down and de-aerated.

The DLF belt weigh feeder was designed especially for free end very free flowing materials. The belt conveyor is extended to incorporate the “calming chamber” where the material is slowed down and de-aerated.

This weigh feeders is used in:

  • Chemical Industry: Crushed dry phosphate, powdered dry clay,
  • Building materials: Hot and dry plaster, Silica, Manganese
  • Aluminum: Fine of petrol coke and crushed coal,
  • Cement Industry: Row meal, dry trass
  • Coke production: Coal, Additives
  • Petrochemical: Polyethylene and polypropylene

The DLV Belt weigh feeder

Operating principle and use

The belt weigh feeder extracts a product from a storage hopper through the constant cross-section and according to a fixed reference flow-rate (set point), adjusts the extracted volume by varying the belt speed in such a way as to keep a constant weighed flow-rate.

The DLV belt weigh feeder was designed especially for poor flowing and sticky materials. The belt conveyor is extended to incorporate the “buffer hopper” with vertical anti-sticky walls where the material is slowed down and de-aerated. This weigh feeders is used in:

  • Cement Industry: Humid Limestone, Clay, Pyrite, Gypsum,
  • Steel Industry: Iron ore,
  • Chemical Industry: Humid phosphate and sulphate,
The DLV Belt weigh feeder

Loss-in-weigh feeder DPP 1000

Operating principle and use

The Loss-in-Weigh Feeder extracts the product from a hopper and according to the fixed flow rate « set point » adjusts the discharged weight by varying the feeder speed to keep the loss in weight flow constant.

The weight of the material in the hopper is measured by three highly accurate strain gauge load cells associated to a digital signal processing unit (UTN).

The Loss in Weight feeder can also be used as a batch-type feeder. The feeder can be made of carbon steel or stainless steel.

The Loss-in Weight feeder is used for continuous and batch weigh feeding of granules, powders, flakes, fibres and also liquids In various industries:

  • Food industry : Cereals, biscuits, confectionery, chocolate, pasta, pet food
  • Chemical industry : Detergents, fertilizers
  • Cement industry: Pet coke, pulverised coal, secondary fuel, gypsum, dust, trass, fly ash
  • Building materials: Plaster, Sand, silica, carbonate, dust, additive (MnO2, CaCO3…)
  • Petrochemical: Polyethylene, polypropylene
  • Nuclear: Uranium, glass sinters, powders

Loss-in-weigh feeder DPP 300

Operating principle and use

The Loss-in-Weigh Feeder extracts the product from a hopper and according to the fixed flow rate « set point » adjusts the discharged weight by varying the feeder speed to keep the loss in weight flow constant.

The weight of the material in the hopper is measured by three highly accurate strain gauge load cells associated to a digital signal processing unit (UTN).

The Loss in Weight feeder can also be used as a batch-type feeder. The feeder can be made of carbon steel or stainless steel.

The Loss-in Weight feeder is used for continuous and batch weigh feeding of granules, powders, flakes, fibres and also liquids in various industries:

  • Food industry: Cereals, biscuits, confectionery, chocolate, pasta, canned food, pet food
  • Chemical industry: Detergents, pesticides, fertilizers, minerals, zeolite, oligo-elements,
  • Building materials: Gypsum, plaster, starch additive (MnO2, CaCO3…)
  • Plastics: Plastics, compound, fibres, talc…
  • Pharma/Cosmetics: All applications for dosing of powders and granules
  • Nuclear technology : Dosing of chips of glass for nuclear waste coating

Loss-in-weigh feeder DPP 50

Operating principle and use

The Loss-in-Weigh Feeder extracts the product from a hopper and according to the fixed flow rate « set point » adjusts the discharged weight by varying the discharges speed to keep constant the loss in weight flow.

The weight of the material in the hopper is measured by a highly accurate weighing platform.

The Loss in Weight feeder can also be used as a batch-type feeder.

The feeder can be made of carbon steel or stainless steel.

The Loss-in Weight feeder is used for continuous and batch weigh feeding of granules, powders, flakes, fibres and also liquids in various industries:

  • Food industry: Cereals, biscuits, confectionery, chocolate, pasta, canned food, pet food
  • Chemical industry: Detergents, pesticides, fertilizers, minerals, zeolite, oligo-elements,
  • Building materials: Gypsum, plaster, starch additive (MnO2, CaCO3…)
  • Plastics: Plastics, compound, fibres, talc…
  • Pharma/Cosmetics: All applications for dosing of powders and granules
  • Nuclear technology : Dosing of chips of glass for nuclear waste coating

Dosing screw weighing DVP

Operating principle and use

The weighed screw feeder works on double regulation principle. The first regulation induces variation in rotary valve speed in order to keep constant the product weight in the screw. The second regulation induces variation of the screw speed to keep constant and in conformity with the set point the product.

The screw weighing is made through 3 or 4 strain gauge weighing sensors.

Screw speed is measured by an incremental coder.

The Weighed Screw Feeder is used for the continuous weighing and feeding of dusty materials.

  • Cement Industry : By-pass dust, Fly ash
  • Coke production : Pulverised coal, pet coke,
  • Chemical Industry : Crushed phosphate, filler,
  • Petrochemical : Polyethylene, Polypropylene
  • Aluminium : Pet coke, alumina, lime…

DLM Apron Weigh Feeder

Operating principle and use

The DLM Apron Weigh Feeder extracts a product from a storage hopper through the constant cross-section and according to a fixed reference flow-rate (set point), adjusts the extracted volume by varying the apron conveyors speed in such a way as to keep a constant weighed flow-rate.

The DLM Apron Weigh Feeder is used for continuous weighing and feeding of large size and wet, poor flowing and/or hot and abrasive materials.

  • Cement Industry : Hot clinker, Limestone, Clay, Pyrite,
  • Steel Industry : Iron ore,
  • Building materials : Humid Clay and Sand
  • Caries : Stones for crusher filing

Volumetric dosing screw or vibrating

Operating principle and use

The volumetric screw or vibrating tray feeder extracts the product from a hopper with more or less regular flow rate which depend of the material flowability.

The flow set is generally set by a potentiometer.

The volumetric screw or vibrating tray feeder is used for continuous feeding of granules, powders, flakes, fibres in various industries where the accuracy is not very important:

  • Food industry : Cereals, biscuits, confectionery, chocolate, pasta, canned food, pet food
  • Chemical industry : Detergents, pesticides, fertilizers, minerals, oligo-elements,
  • Building materials : Gypsum, plaster, additives,
  • Plastics : Plastics, compound, fibres, talc…
 Volumetric dosing screw or vibrating

Dense Phase Pneumatic conveying

Operating principle and use

The Dense Phase pneumatic conveying system is used for conveying of dry bulk materials as powders and granules by using a high positive pressure and a slow velocity.

This way of conveying is mainly used for abrasive, fragile, and/or explosive products.

Product transfer takes place in successive batches and plugs.

Each conveying cycle includes the following stages:

  • Filling stage during which the filling valve is open as well as the vent valve. The product fills the vessel (tank) and displaces the air which is inside the tank.
  • The high level control device issues a closing signal to the feed valve and the vent valve.
  • The outlet pinch valve (if fitted) remains closed.
  • The compressed air inlet valve opens and the compressed air enters in the vessel.
  • The product mixes with the air and starts to fluidize.
  • When the pressure in the vessel reaches the level required for conveying, the outlet valve opens and the product is pushed forward into the conveying pipeline. The product moves in successive plugs until the vessel and the pipeline are empty.
  • A single pressure switch controls the pressure in the vessel and as soon as the pre-set limit of the cycle end has been reached, it stops the air compressed supply. The residual air allows purging the circuit until the pressure differential has been dispersed.

A principal advantages of this method are :

  • Particularly suitable for ATEX installations,
  • It preserves the original appearance of the product,
  • Low power consomption

Lean Phase Pneumatic conveying

Operating principle and use

The Lean Phase pneumatic conveying system allows moving powdery and granular materials over a more or less long distance using low pressure air compressed (< 1 bar) and high conveying velocity (20 to 25 m/s). This conveying mode is chiefly used for non-explosive, non-abrasive powdery materials.

Material conveying is continuously processed. Material enters the pipeline through a rotary valve via an injecting device or directly (blowing valve).

Compressed air is made by a blower or a fan.

In lean phase pneumatic conveying, two principles can be used :

  • The positive pressure systems (blowing) an,
  • The negative pressure systems (suction).

The choice between these two systems depends on the materials physical characteristics and the desired conveying flowrates.

Material to air ratio is very important and often requires setting up of more or less large size filters with fans on hoppers or collecting silos

A principal advantages of this method are :

  • Relatively small amount of investment,
  • Easy implementation,
  • Ability to have multiple feed points for a single circuit.

Pneumatic Vacuum Transfer

Operating principle and use

The pneumatic vacuum transfer is a transport system for powders and granules by batch operated at short distances. The vacuum is usually created by a vacuum pump and the product transferred from one point to another by suction.

Compact, dust-free and maintenance-free, the system is very economical and can ensure a flow until 4 t / h and reach a distance of 50 m. Higher throughputs and longer distances are possible given the correct detailed system design.

A principal advantages:

  • Low footprint,
  • Low maintenance,
  • Low cost.

Big bags weighing and bagging DBB 1000

Operating principle and use

The DBB 1000 is a gravimetric feeding machine designed to deliver automatically a specific quantity of product into big bags according to weight set point.

Sautelma Rotolok DBB 1000 weighing and bagging machine can be used in all types of industries for any kind of powdered and granular materials.

Depending on customers’ needs and different degree of automation, Sautelma Rotolok can supply simple machine but also complete automated bagging lines which include other equipment such as:

  • Empty pallets distributor
  • Big bag compacting device (vibrating table, ….)
  • Roller conveyor
  • Wrap around machine
  • Access platform
  • Safety barrier
  • Dedusting station
  • Control command cubicle

Usually Sautelma Rotolok supply “turnkey” installations

Sautelma Rotolok propose two models of Big bag weighing & bagging machines :

  • “Evolution” which is more automated and faster system
  • “Economy” which is manual basic low cost equipment

Small bags weighing and bagging CV100

Operating principle and use

The vertical weighing & feeding machine CV100 is gravimetric feeding equipment designed to deliver automatically out of the “weight” set point a specific quantity of product into the bags.

The Sautelma Rotolok CV model weighing & bagging machine can be used for all type of granular and powdered free flowing materials like cereals, fertilizers, plastics, sugar, flour, pet food, washing powder etc…

The CV100 can also run as hopper scale and be used for production control by totalizing of bulk materials.

The weighed hopper is usually filled by screw feeder, vibrating tray feeder, belt feeder or simply by gravity dosing helmet valve.

In function of filling rates (speed) and the degree of automation, Sautelma Rotolok provides complete packaging lines including a number of essential equipment such as :

  • Vending machine of empty bags
  • Bag closing systems by sewing and / or welding,
  • Bag handling conveyors,
  • Dedusting systems,
  • Control panel and automation
  • Palletizers

This is often provided as " turnkey" project

Sautelma Rotolok propose two models of small bags weighing & bagging machines:

  • Weigh feeding machine for open mouth bags
  • Weigh feeding machine for valve bags

Big bag discharger/FIBC (SVB)

Operating principle and use

The ROTOLOK big bags (FIBC) discharge station due to its modular design and the large number of possible configurations can be used to empty big bags of different sizes, to be punctured for single tip bags or opened by hand for reusable bags, containing any type of product (powder , granules, fibres ...).

The company offers two models of big bag discharges:

"Evolution" model, including different options such as:

  • Electric lifting hoist,
  • Dust collector,
  • Two pneumatic rams with specially contoured end plates press opposing sides of big bag, loosening materials that solidified during storage Two pneumatic flow control valves

“Economic" model which is low cost simple equipment suitable for free flowing materials.

The simplest version is composed of a support frame made of steel (stainless steel available on request), which supports a hopper vibrated with a seal and a door to big bag unloading access to the mouth safely. A complete yoke generally the first version of our big bags emptying station.

On this first version we can add additional chassis which allows to carry the big bag without constantly mobilize a hoist. We can also provide a big bags completely autonomous dump station equipped with a support beam and hoist dedicated to the station. The hoist can be supplied by us or customer supply.

Big bag discharger/FIBC (SVB) Big bag discharger/FIBC (SVB)

Sack tips discharger (SVS)

Operating principle and use

As part of its packages of handling and dosing of granules and powders, Sautelma Rotolok offers its clients sack tip manual opening units with or without dust collector.

The system include:

  • Discharge hopper
  • Dustproof door
  • Removable shelf to put down the bag
  • Supporting frame
  • Dust collector with fan (OPTION)
  • Integrated empty (waste) bags compactor (OPTION)
Sack tips discharger (SVS)

Checkweigher CW1 for boxes

Operating principle and use

The CW1 checkweigher is a weighing machine used for in-line control of weight of any packed object (product) automatically conveyed.

In the most various industries and for the most various products (boxes, tubes, pastry boats, bags, jars…) the Sautelma Rotolok CW1 checkwigher allows to :

  • Check the weight of assembled packages and detect the missing (un-complete) boxes.
  • Categorize the products according to their weight.

The CW1 checkweigher is made of five main parts:

  • A handling system including the supporting frame and one three conveying belts
  • A weighing system by weighing plate including one or several load cells and the digital signal processing unit
  • An electrical control command cubicle,
  • An electronics controller for control of all machine functions and data processing
  • A rejection system adapted to the product packing

Checkweigher CW1 for bags

Operating principle and use

The CW1 checkweigher is a weighing machine used for in-line control of weight of bulk materials packed in bags of 10 to 50 kg automatically conveyed.

In the most various industries the Sautelma Rotolok CW3 checkwigher allows to :

  • Check continuously the pre-packed products and reject the products with weight shortages (metrological checking for pre-packed units - legal trade).
  • Measure and totalize the weight of the production.
  • Correct automatically a volumetric weigh feeding by mean value feed-back control software for one or more weighing heads.

The CW1 checkweigher is made of five main parts:

  • A handling system including the supporting frame and a conveying belts
  • A weighing system by weighing plate including one or several load cells and the digital signal processing unit
  • An electrical control command cubicle ,
  • An electronics controller for control of all machine functions and data processing
  • A rejection system done by pneumatic pusher or retractable conveyor.

Checkweigher CW3

Operating principle and use

The CW3 checkweigher is a weighing machine used for in-line control of weight of any packed object (product) automatically conveyed.

In the most various industries and for the most various products (boxes, tubes, pastry boats, bags, jars…) the Sautelma Rotolok CW3 checkwigher allows to :

  • Check continuously the pre-packed products and reject the products with weight shortages (metrological checking for pre-packed units - legal trade).
  • Check the weight of assembled packages to detect the missing (un-complete) boxes.
  • Categorize the products according to their weight.
  • Measure and totalize the weight of the production.
  • Correct automatically a volumetric weigh feeding by mean value feed-back control software for one or more weighing heads.

The CW1 checkweigher is made of five main parts:

  • A handling system including the supporting frame and two or three conveying belts,
  • A weighing system by high accurate load cell and the digital signal processing unit,
  • An electrical control command cubicle,
  • An electronics controller for control of all machine functions and data processing,
  • A rejection system adapted to the product packing.

MiniSmart

Operating principle and use

All Sautelma’s equipment is controlled by the MINISMART industrial weighing & flow rate regulation microcontroller. The MINISMART is a digital electronics for control and display.
It can communicate with its environment through:
- Traditional wiring connections with 4.20 mA analogue signals and PFC digital signals,
- Serial connections with MODBUS protocole
- In Networks such as PROFIBUS, INTERBUS, DEVICE NET, CONTROLNET, PROFINET but also by ETHERNET IP or ETHERNET TCP MODBUS

The MINISMART design is modular and consists of several cards which are used according to the application.
- The following cards can be provided:
- The Backplane (mother) card,
- The Central Unite card,
- The signal processing card
- The Analog I/O card
- The communication card

MiniSmart

Electrical cubicle

Operating principle and use

The electrical part contains: frequency inverter, transformer, motor protection, relays and terminal connection block. It is usually settled in a standard electrical cubicle located near the machine or in the electrical room.

The electrical cubicle can be done in mild steel or stainless steel.

The standard protection is usually IP55 but we can also supply IP65 or IP66 cubicles.

Our electrical cubicles can also be supplied with integrated air conditioning.

Electrical cubicle

UTN-DSP – Digital signal processing unit

Operating principle and use

 

The Digital Signal Processing Unit (UTN) is a smart box that processes locally on the machine some signals such as weight, speed, belt deviation, belt slipping and rotation control.

It is usually attached to the frame of the machine and includes:
- A microcontroller DSP (Digital Signal Processor) for digital signal treatment and filtering,
- A digital strain gauge converter, OFFSET and GAIN adjustable by buttons,
- 4 connectors for 4 strain gauges sensors mounted in parallel,
- 4 digital inputs for measuring speed , rotation control and band offset,
- 1 analog output.

Communication with MiniSmart controller is realized by an RS 485 link.

UTN-DSP – Digital signal processing unit

Centralized control command system

Operating principle and use

 

Sautelma Rotolok also offers centralized control systems which can integrate PLC’s and/or supervision performed on PRO -FACE HMI. So, we propose :

PROCESVISION for continuous and batch type dosing systems,

TRIVISION for the centralization of all checkweighers and scales for metrological control of the products packed in a factory with centralized processing of statistics.

Centralized control command system

Rotary valve

Operating principle and use

The prime function of a rotary valve is to regulate the flow from one chamber to another while maintaining a good airlock condition. The product is mainly in dry powder or granular form.

In the dust filtration field a good airlock is essential on cyclone and bag filter applications in order that the manufacturers quoted high dust collection efficiencies can be maintained. Airlocks are also important in the pneumatic conveying industry, where product is regulated into a pressure or vacuum conveying line while minimising air leakage.

Pressure differentials to 20psi and temperatures to 400°C (752°F) are considered the norm and extreme pressures and temperatures can be accommodated with special designs.

We offer a wide range of rotary valves in cast iron, aluminium or stainless steel.

Rotary valve

Bin Activator

Operating principle and use

Designed to promote flow of difficult materials from hoppers the Solitec Bin Activator comprises a Spun Steel dish onto which a domed baffle is positioned and this is supported by cross steel members with one or two out-of-balance motors inducing a vibration into the assembly. The kit is supplied complete with mounting ring (for attachment to silo by clients), inlet and outlet flexible sleeves and support clamps. To remove any vibration from being transmitted into the silo or supporting steel the complete assembly is suspended beneath the silo by suspension rods in rubber mounts.

Available in both Carbon and Stainless steel with size diameters ranging from 600 to 3660 this well-tried and tested aid has proven the workhorse of Silo Discharge solutions. In some applications Bin Activators can give a level of control to discharge however we do not recommend this particular device as a control flow solution

Bin Activator

Soliflo

Operating principle and use

The Solitec Soliflo is an advanced bin discharger. Based on the proven principles of the Solitec Bin Activator. With this device the inner cone is raised and lowered automatically, creating an annular gap through which material flows. When the cone in its fully lowered position the Soliflo becomes a shut off valve.

Valve lift and vibration are induced through compressed air at 5.5 to 6 barg.

The Soliflo can be supplied both Round and Square through the size range 600 to 2440 and can be manufactured in Carbon steel, Stainless steel or a combination ensuring Stainless Steel parts contact with product flow. There are two types of Soliflo available to cater to most known applications:

  • Pre-set – operating to pre-determined increments. However, the flow rate from the pre-set Soliflo can be increased or decreased by manually adjusting internal collars, which control the lift of the cone.
  • Variable – a timer in a remotely positioned control panel, which pulses the cone valve up and down thus adjusting the flow rate while the material is discharging, controls the throughput from the machine.
Soliflo

Double flap valve

Operating principle and use

Suitable for discharge dry dust, powder, granules and fibrous materials from cyclones, filters, hoppers etc., whilst maintaining an effective gas seal.

The valve consists of two flaps connected by counterweights or spring loaded spindles, which are operated by means of a motor driven cam. The cam alternately opens each flap allowing materials to pass through the separate chambers in batch form and thereby ensuring a gas seal.

After cam release, the counterweights (or springs), return each flap to the upper (sealed) position and are designed and sized so that a clapping action at the flaps is obtained, aiding material flow and preventing build up at the seal plate.

The unit is suitable for pressure differentials of up to 500mm W.G. This can be increased with special features. A fabricated steel body caters for sizes and specials that fall outside the standard 150, 200, 250 and 300mm cast iron body range as well as offering stainless steel construction. Optional hardened steel flaps and inlets can help prolong the valve life in particularly arduous or abrasive applications.

Double flap valve

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Our contact details

Pôle d'activités d'Éguilles
75 rue Serpentine
13510 EGUILLES

+33(0)4 42 95 44 00

+33(0)4 42 20 76 27

SAUTELMA ROTOLOK