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Sequence Timers
The Sequence Timer, PT 130 is a multi channel and multi range instrument. Three basic timing range seconds, minutes and hour with a resolution of 0.01, 0.1 and 1 are programmable for both on time and off time. The 11.059 MHz quartz crystal gives an accurate timing range over the full scale. The timer has NO / NC output relay contacts rated at 6A 230 volts AC. The display is a 7 segment LED. It has a built in batch counter facility to count the number of cycles completed. The remote and front panel reset, hold function give easy operation. The timer is compact and of standard DIN size. It is available in the range of 4, 10, 18, 26, 34 channels.
Sequence Timers
It is used in hydraulic press sequence control, for blending and storage silos in cement industry, for bag filters, dust collectors, tyre tube curing press, pot header in rubber industry and for machine tool sequence.

Purge Solenoid Valve
Mellcon purge solenoid valve is constructed and arranged to provide reduced operating noise and decreased armature wear as the armature reciprocates within a bore in response to solenoid energization and de-energization. The armature contains an elastomeric valve head that is based normally closed against the valve seat. When the solenoid assembly is energized, the armature is retracted. The armature's momentum is initially absorbed by the elastomeric valve head making contact with the solenoid assembly at one end of the bore. Final absorption of the armature's momentum is shared by continuing contact of the valve head with the solenoid assembly and by an elastomeric limit stop that is disposed between the armature and the stator. In this way the elastomeric limit stop is not required to absorb the full momentum of the retracting armature.
Flow Control in Air Dryers / Pilot Operation of Diaphragm / Main Valves.

Auto Drain Valve
Mellcon Compressed Air Auto Drains are most economical, simple & maintenance free systems. The compressed Air / Gas contains Inherent moisture which will condense in receiver tanks, filters pipelines & Pneumatic Instruments, which requires regular draining systems.

Mellcon Auto Drain Trap Model ACDT - 6 is 2/2 way pilot operated. Fully automatic, Maintenance free, easy to install and suitable to drain condensate from compressed air system like Dryer, Receiver, Moisture Separator etc.

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Auto Drain Valve

Carbon Molecular Sieves

The carbon molecular sieve ( CMS ) is a new nonpolar absorbent with adsorbing oxygen molecule to get nitrogen-enriched air at normal temperature. The ability of separating the air decided by propagation rate, adsorptive attraction or the same effect of each gas in carbon molecular sieve pore.
The carbon molecular sieve is widely applied in petroleum chemical industry, the heat treatment of metal, the electronic manufacture and food preservation industries.

A process for producing carbon molecular sieves for the separation of oxygen and nitrogen, whereby finely ground hard coal particles are oxidized with air in a fluidized bed, the coal is then formed after the addition of water and binders and carbonized at temperatures of

Carbon Molecular Sieves
800°-900° C., subsequently activated with steam at temperatures of 800°-900° C. and the preliminary product of the low-level activation is treated with carbon splitting hydrocarbons. Starches obtained by reacting agglutinized starches with sulphamates are used as binders.
The Main Technical Indexes
  • Particle diameter:1.5mm to 2.0 mm
  • Adsorption cycle:2×60S
  • Heap  density:640-660 g/l
  • Compressive strength:=100 N/per

Activated Alumina
Activated alumina is a drying  media used for drying of various Compressed Air & Gases like H2, N2, CO2 N2O etc. . It is made by treating aluminum ore so that it becomes porous and highly adsorptive. Activated alumina will remove a variety of contaminants including excessive fluoride, arsenic and selenium. The medium requires periodic cleaning with an appropriate regenerate such as alum or acid in order to remain effective.

A white or slightly red particle, ball-shaped or roll-shaped, activated alumina is insoluble in water and organic solvent, soluble in strong acids and alkalis, odorless, tasteless and non-toxic.
Activated Alumina
  1. Catalyst for recovering sulfur in the petrochemical industry
  2. Excellent defluorination agent for drinking water and for recycling alkyl-hydrocarbon in alkylbenzene production
  3. Reclaiming agent for de-acidic in transformer oil, and de-arsenic agent in the acid industry
  4. Adsorbent in the production of hydrogen peroxide solution
  5. Catalyst for polyhydro-ammonia by substituting silica gel with ball-shaped product
  6. Desiccator and purifying agent

Molecular Sieves
Molecular sieves are crystalline metal aluminosilicates having a threedimensional interconnecting network of silica and alumina tetrahedra. Natural water of hydration is removed from this network by heating to produce uniform cavities which selectively adsorb molecules of a specific size.
A molecular sieve is a material containing tiny pores of a precise and uniform size that is used as an adsorbent for gases and liquids.

Molecules small enough to pass through the pores are adsorbed while larger molecules are not. It is different from a common filter in that it operates on a molecular level. For instance, a water molecule may not be small enough to pass through while the smaller molecules in the gas pass through. Because of this, they often function as a desiccant. A molecular sieve can adsorb water up to 22% of its own weight. These are mainly Graded as 3A, 4A, 5A and 13X sieves are suitable for specialized applications.

Long known for their drying capacity (even to 90°C), molecular sieves have recently demonstrated utility in synthetic organic procedures, frequently allowing isolation of desired

Molecular Sieves
products from condensation reactions that are governed by generally unfavorable equilibria. These synthetic zeolites have been shown to remove water, alcohols (including methanol and ethanol), and HCl from such systems as ketimine and enamine syntheses, ester condensations, and the conversion of unsaturated aldehydes to polyenals.
- General Applications of Molecular sieves  include rigorous Drying of compressed air & gases upto a dew point of (-) 80 deg C . In PSA Air Separation Plants for generation of Oxygen..

Activated Carbon Charge for removal of oil  vapour in lubricated compressed air streams
Activated Carbon is a porous form of Carbon manufactured form Coconut shell, wood or coal. Activation is achieved with steam and it develops myraid of pores with enormous internal surface area.

The porosity creates a remarkable power of ADSORPTION, an indispensable process in industrial separation, purification; decolarization and recovery techniques. The Carbon atoms at the internal surface of Activated Carbon exert an attraction (van der waals force) on the molecules of surroundings liquid and gas and fixes on to its pore walls. This is the basis of mechanism whereby Activated Carbons may be used to remove one or more components from a mixture.

Activated Carbon
  1. Water Treatment
    1. Desalination and Dechlorination plants.
    2. Purification of Drinking water.
    3. Treatment of Industrial and Municipal Water.
  2. Beverages
    Removal of colloidal matter & deodorization before bottling. Up gradation of feed water supplies in soft drink plants.
  3. Food Processing
    Purification and decolonization of edible oils and Sweeteners.
  4. Dyestuffs and Dyes Intermediates
  5. Gold Refining and Extraction Units Absorption of trace quantities from mine tailings.
  6. Breweries and wine making
  7. Sugar Plants
  8. Pharmaceutical Industry
  9. Glycerin, Fatty Acid
  10. Electroplating Plants
  11. Petroleum Refineries as a catalyst carrier (e.g. Merox)
  12. Thermal and Nuclear Power Plants
  13. Air Purification, Auto Emission Control and Solvent Recovery
  14. Fertilizer Units

Silica gel is an amorphous form of silicon dioxide, which is synthetically produced in the form of hard
irregular granules (having the appearance of crystals) or hard irregular beads. A microporous structure
of interlocking cavities gives a very high surface area (800 square meters per gram). It is this structure that
makes silica gel a high capacity desiccant. Water molecules adhere to the gels surface because it exhibits
a lower vapour pressure than the surrounding air.

Silica Gel
Silica Gel Non-Indicative Type (White)

The colour appearance of this type of silica gel is white. The main property of this type is that it does not give any indication. The colour remains unchanged and, therefore, it is not easy to ascertain after visualizing whether the absorption capacity of Silica Gel is completed or not.
Silica Indicative Type

Silica Indicative Type (Blue)

It is produced by impregnating white Silica Gel with cobalt chloride due to which the colour appearance of Silica Gel is Blue which changes to Pink / White after the moisture is absorbed. It is very easy to ascertain after visualizing whether the moisture absorption capacity is completed or not.

Mixed Silica Gel

These kinds of packaging are very useful at the time of export, as the duration of the transit is more especially by sea. Therefore it is recommended to use Silica Gel Bags in export of items like :-

  1. Drying of Air & Gases
  2. Leather or Leather goods
  3. Garments
  4. Electronic Products
  5. Dry flowers / Pharmaceutical Products
  6. Glass Products
  7. Spices
  8. Beer.
  9. Desiccant Dryers / Compressors
    Silica Gel is highly used desiccant in substitute of Activated / Activated Carbon which are other desiccant chemicals. Silica Gel is used in Air Compressors and Air Dryers to dry the gas and separate them.
  10. Transformers Breathers
    There are breathers in transformers, which contain Silica Gel for the purpose of absorbing H2O.

Compressed Air Filters
  1. Demister  Type
  2. Ceramic Candle Type
  3. Borosilicate Glass Fibre for Micro Filter

Mellcon Compressed Air and Gas Filters being manufactured are best Tested for simultaneous mechanical separation of liquid droplets and of solid dust from compressed gases. Tested with oil mist, these filters will have to be followed by adsorber units which have the double function of removing the remaining mist particles and of adsorbing the dissolved gases and vapours. Such "Adsorbers" contain granular adsorption media, usually activated carbon or silica gel. The granules nearer to depth filter and liquid mist particles, meanwhile the farther granules adsorb the dissolved vapours. Working pressure : 10 kg/cm2. Material : Carbon Steel. Finish : Inside black bituminious paint. Flanges according to ASA-150 # Ceramic filter cylinders of grain size 120. 

Air Filters
Air / Gas Dryers Refrigerated Equipments Other Products
Storage Systems Onsite Gas Generators
Spare Parts


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