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Company Factsheet

Nature of Business
Manufacturer

GST No.
27AAACD7365G1ZL

Products & Services

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Slide Gate Valve

Ball Bearing

DEMECH Slide Gate Valves are designed to provide a quick acting isolation valve unit that can be installed into a bulk handling flow path to stop material flow.

DEMECH Slide gate valves are simple and compact in design, robust in structure, excellent in technology and are easy to install. Slide gate valves are designed to shut off product flow from outlets of storage bins, silos, conveyors, and other discharge points handling dry bulk materials.

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Diverter Gate Valve

Ball Bearing

Diverter Gate Valve is used for selecting one out of two outlet ports. The flow through these valves is essentially a gravity flow and the position of the diverter flap decides which of the two outlet ports will be active.

DEMECH manufactures & supplies these fabricated valves as per customers' requirements.

Diverter valves are designed to direct product flow outlets of storage bins, silo conveyors, gravity flow chutes and other discharge points handling powders, granules, grains and other bulk solids. These valves are available in deflector or diverter types, with three-positional control on diverter if required to split the flow.

The splitting of flow can be achieved by positioning the diverter flap in an intermediate position. However, middle position will not necessarily mean equal splitting of flow as the location of valve and material flow characteristic can influence the flow splitting ratio.

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Cast Basalt Liners

Basalt is a volcanic rock possessing ideal properties like inertness coupled with excellent resistance to corrosion and abrasion.

After selective quarrying the rock is melted at a temperature of around 1500 degree C and cast into molds or spun into cylinders. The castings so produced are then subjected to heat treatment cycles in  kilns to produce re-crystallized basalt. The product thus produced inherits inertness of parent materials. Its microcrystalline, non-porous texture being denser and more homogenous than raw basalt, it acquires exceptionally high abrasion resistance.

DEMECH is the only company in India having the capability to produce Cast Basalt tiles and cylinders, at it's manufacturing facility in Pune, since 1987.

Cast Basalt is the best lining material for sliding abrasion preferred by industry. It is extensively used for lining pipes, bends, trenches, sumps etc.

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Ceramic Lining

DEMECH manufactures a wide range of high alumina ceramic liners such as tiles, special shapes and pipe sections which have high alumina content and wear protection properties. These liners are bonded on to steel surfaces and are extremely effective for prevention of wear and tear due to high particle velocity, impingement, abrasion and impact. They are extensively used for lining of equipment prone to severe wear in core sector industries such as cement, steel, power.

Demech manufactures ceramic tiles in the form of weldable and pastable tiles as well as pipe sections of various diameters for installation at site and more specifically for lining of fabricated pipes, bends and fittings for pneumatic conveying applications specially for conveying of pulverised coal in thermal power plants

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Chain Conveyor

DEMECH have been one of the pioneers in India to manufacture and supply En-Masse & Drag Chain Conveyors.

Slow moving chains in these conveyors influence the material to move gently through a closed duct in a horizontal or even in steeply inclined profiles. These can handle virtually any type of bulk material in an environmentally safe way due to its dust-tight and spill proof, totally enclosed construction. These conveyors are heavy duty and of rugged construction.

The conveying profile can vary from Horizontal to near vertical direction.

The material is conveyed with 'En-masse' effect or 'Drag' effect. En-Masse conveyors give cost advantages due to their low power consumption, compact size & low maintenance requirements.

DEMECH uses its Demech brand of drop forged chains. But conveyors with roller pin chains or round link chains are also designed if the customer requirement demands so.

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Submerged Scrapper Conveyor

DEMECH has been supplying Submerged Scraper Conveyors (SSC) since early 1990 and has recently entered into technical collaboration with Hitachi Power Europe, GmbH, Duisburg, Germany to manufacture SSC of large size which are required for the bigger boilers.

SSC provides an ideal solution for handling very hot Bottom Ash from Coal fired boilers and Hot Kiln Dust from Steel Plants. These materials which are in red hot condition when discharged are difficult to safely handle by any other means than SSC.

In case of Coal fired boilers DEMECH system requires less water thereby saving water and also needs lesser headroom below the furnace.

The hot Economizer Ash and the Pyrite rejects (coal mill rejects) can also be discharged to the SSC installed for handling Bottom Ash, in turn saving of a problematic separate system for these materials.

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Rotary Air Lock Valves

DEMECH provides a complete range of Rotary Airlocks suitable for air lock applications ranging from gravity discharge of filters, rotary valves, cyclone dust collectors, and rotary airlock storage devices to precision feeders for dilute phase and continuous dense phase pneumatic conveying systems.

Rotary Air lock valve is used in Bulk Handling System for free flowing dry powder, granular, crystal or pellets form of material. It is usually fitted below Chain conveyor / Screw Conveyor / Hopper / Silos / Bag filter / ESP/ Bins etc.

The main function of a Rotary Air lock Valve is to provide a rated Drop-through discharge, which determines the size and capacity of Rotary Air Lock Valve. Besides this, it also functions as a Rotary Airlock to seal and prevents possibility of back flow of material in a pressurized system.

The selection of a Rotary Air Lock Valve depends on three main factors i.e. Material density, Capacity desired & flowability of material. Temperature of dust and dust characteristics decide the material of construction of Rotary air lock valve.

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Volumetric Feeders

Volumetric Coal Feeder is a special variant of Chain Conveyors. Backed by many years of experience in manufacturing of Chain conveyors, DEMECH has also executed number of orders for Volumetric Coal Feeders for prestigious clients.

Gravimetric Feeders are better suited for measured feeding of coal for firing but low cost Volumetric Feeders are commonly used for small boilers and Fluidized bed boilers. Lignite fired boilers also use Volumetric chain feeders due to high moisture contents and sticky nature of Lignite.

Demech has entered into technical collaboration with Hitachi Power Europe GmbH (HPE), Duisburg, Germany; to manufacture Volumetric Coal Feeders. This gives Demech the unique advantage to supply Volumetric Coal Feeders using the proven and reliable designs of Hitachi Power Europe GmbH.

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Chromax Plates

CHROMAX wear plate by DEMECH is a composite plate, manufactured by a unique process in which a uniform layer of highly wear resistant carbides is deposited on a carbon steel base. Very hard carbides are suspended in a tough wear resistant matrix. It is the concentration & uniform distribution of carbide structure that gives CHROMAX Wear Plate its unique wear resistant & life prolonging characteristics.

The process involves applying specially and accurately blended powders to the area to be overlaid by forming an arc and covering the arc by flux which avoids the oxidation of the deposits.

The bond between the mild steel base and the overlay is of very high strength and resists repeated and prolonged impact loads and the overlaid deposit offers unequalled resistance to low and high stress abrasion.

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Ceramic Liners

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    Deccan Mechanical & Chemical Industries Private Limited 78, Bhosari Industrial Estate, Bhosari MIDC,
    Pune-411026, Maharashtra, India

    Vikas Pawar ( Manager )
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