Weldon Engineers (india)

Hari Nagar, Delhi

Its an advanced method for controlling hard water deposits and Bio-Fouling in your domestic use and in the cooling systems. Its BENEFITS: WORKS on all pipes(Black Steel, Galvanised, copper, PVC) PREVENTS & REMOVES formation of hard water lime-scale deposits. ELIMINATES all electrolysis on pipe & equipment walls. IMPROVES Efficiency & extends the life of water fed equipments. Absolutely NO maintenance. NO salts, chemicals, Labour costs etc. No moving parts - 10-15 years life expectancy. 100% water proof for outdoor installation.

We bring forth an unmatched range of Rectangular FRP Cooling Tower to customers. It is precisely designed using quality assured PVC, polypropylene, fiberglass reinforced polyester (FRP) and hot dipped galvanized steel. Rectangular FRP Cooling Tower manufactured by us is widely recognized for its sturdy construction and abrasion resistant nature. Furthermore, Rectangular FRP Cooling Tower is corrosion and chemical resistant.   Specifications : Single Cell Capacity 10- 500 Nominal Tons 9 - 456 CMH at 97.5 o F/90 o F/83 o F 550-2000 Nominal Tons in Twin & Multi cells Production Capacity : 500 sets per annum   Principle of Cooling Towers : Square type cooling towers operates according to the counter flow principle. The water to be cooled is connected into the tower at the top in main header pipe and is distributed by branch pipes with splash cap (nozzles) with a low pressure drop, and flows down, in the form of a thin water film and small droplets, over the largest possible fill surface for the heat transfer. The water falls through the fill and is collected in a FRP basin at the bottom of the tower. The atmospheric air is sucked in through the opening for air inlet on all sides at the lower portion of the tower and moves up through the PVC fill. The air moving up cools the falling water. Here the transfer of heat takes place by evaporation and direct contact. The air inlet is covered by PVC Mesh for free flow of air.   Selection of materials : The selection of materials for the POLO S Series cooling towers is based on the requirement that they must be completely resistant to corrosion and chemicals. This has been achieved through the exclusive use of PVC, polypropylene, fiberglass reinforced polyester (FRP) and hot dipped galvanized steel for supports.   Salient Features : Casing, Basin, Fan deck and Fan stack in corrosion-resistant and fire-retardant FRP Hot dip galvanized supporting structural. Fill material of PVC (max. temp. 60 Degree C). High efficient axial flow Fan with Aluminium / FRP blades and cast aluminum alloy hub. Drift eliminators of PVC extruded ‘C’ & ’S’ type (drift percentage shall not exceed 0.05 of circulating water flow). Water distribution system with PVC pipe and PP splash cap (nozzles).   Advantage : Energy efficient - use of high efficient fill, and nozzles with a low pressure drop. Durable - use of high quality materials. Guaranteed performance - use of PVC fill. Aesthetic looks - use of FRP panels.

We manufacture and supply a comprehensive assortment of Non Chemical Water Treatment Plant . Non Chemical Water Treatment Plant comes in different sizes and flanges as per the requirements of the customers. Non Chemical Water Treatment Plant supplies water continuously and is eco-friendly. It is low in maintenance, with less power consumption and comes with a warranty of 5 years.   Specifications Of SCALE OFF - On Line Scale Prevention System The unit is a non-chemical on-line type scale Preventor not requiring any chemicals. Non-chemical water treatment system prevents the formation of hard scale in cooling circuits of air conditioning equipment. It works with a combination of principles of Adsorption, and Turbulence. The inner core converts the hardness salts into colloidal particles. The unit does not require any electricity or any other source of energy. The unit should not have any recurring, operating and maintenance cost. The size of the unit is determined based on the water quality and water flow rate. The unit is installed in the condenser water circuit. The outer casing is of stainless steel. The company have method of checking the performance of system through computer simulation The unit is backed by 5 year replacement warranty and one year after sales service   Selection Procedure : Each model of Scale off works on a defined range of flow rate Each model of Scale off works on a defined range of flow rate In order to select the model flow rate at the tapping of condenser should be known or this can be calculated on the basis of 3-4 USGPM per ton In the table below minimum flow rate is mentioned against each model while maximum flow rate of a model becomes the minimum flow rate of the next higher model   Advantages : SCALE OFF possesses many advantages over conventional water treatment systems, some of which include :- As SCALE OFF has no moving parts, it requires no replacement of spares or extra maintenance other than normal plant maintenance. Maintenance Free : As the equipment is installed on – line of the cooling circuit Eliminate Recurring Costs of Expensive Chemicals / Resins : SCALE OFF has no recurring costs associated with chemical dosing or water softening, as no chemicals, regenerative salts or resins are used. No Energy Consumption for running of the equipment : Unlike conventional water treatment SCALE OFF doesn’t require any power or electrical inputs Saves in Energy Consumption of the plant : Scale reduces heat transfer efficiency resulting in increased energy consumption, which can rise by almost 50%. As SCALE OFF is constantly preventing the deposition of Scale, thereby saving valuable energy cost No Corrosion Risk : Water softeners necessitate the use of corrosion inhibitors, as the water tends to be corrosive. SCALE OFF on the other hand has this unique advantage of preventing scale without increasing the risk of corrosion. No Pollution : Chemical dosing and water softening system require the use of chemicals, which are hazardous and cause pollution. Disposal of such hazardous chemicals in the environment is also a difficult task faced by customers. Low Payback Period and Saving of Operational Cost : The pricing of SCALE OFF ensures that the user of the systems derives a payback period of three months to one year. This is made possible by savings in operating cost as compared to the fixed investment required.

We manufacture and supply a wide range of Round FRP Cooling Tower . It is made from quality approved raw material using advanced technology. Round FRP Cooling Tower is used in various areas such as chemical plants, power stations, oil refineries and cooling industries. It is available in different capacities ranging from 5 TR to 500 TR. Round FRP Cooling Tower is known for its compact design, light weight, less power consumption, low maintenance and corrosion resistant nature.   Salient Features : Casing : Cooling Tower Casing is made of selected grade materials of tough Fibre Glass Reinforced Polyester & resins, etc. Additional embossing is done for extra strength in case of big cooling towers. Fill : Honeycomb & ring type P.V.C fills are used for extended contact area  having a high heat transfer efficiency. The crossing of air & water streams in close proximity which creates a diffused turbulence conducive to evaporation & efficient heat transfer. Water Basin : It is completely leak proof which avoids spillage & seepage of water. It is of deep sump design to ensure maximum water level at all times & made up of FRP with additional stiffening to take care of extra water weight. However RCC basin is recommended for capacities 300TR and above. Sprinkler : Specially designed rotary sprinkler head is made of aluminium alloy to avoid corrosion, also fitted with sealed ball bearings to take care of thrust & radial loads. S.S. & Brass sprinklers are also provided at an extra cost. Fan : Fan cast aluminium alloy fan is of aero dynamic designed axial flow type to achieve high efficiency. FRP fan set can also be supplied on request at extra cost. Drift Eliminator : To reduce carry out losses through entrainment of moisture drops in the stream by specially designed multiblade rotary drift eliminator made of FRP sheets/aluminium. Additional PVC eliminator is provided in large capacity cooling towers. Motor : Special low RPM totally enclosed motors of Vertical, Flange type with enlarged & threaded shaft and sealed top is supplied with the cooling tower. The motor is also weather proof and in IP-55 construction. Supports & Hardware : All components like tower supports, motor supports, leg supports, etc. are either hot dip galvanised or epoxy coated. Hardware is Galvanised Steel. Stainless Steel or Phosphor Bronze hardwares can be supplied on request at extra cost. Note : Dimensional & other engineering data available with proposal/quotation.

"Electrostatic Type Non-chemical On Line Scale Preventer" The Two Main Components of The System For Electrostatic Scale-off water treatment scale preventer : Treating Chamber Power Control Panel The treating Chamber basically consists of two elements. One is the cylindrical Stainless steel chamber-Negative electrode through which the water flows. At the center of this chamber is a core covered by a dielectric sheath –positive electrode. Water enters the Chamber of the bottom and spirals around the core as its travels upwards the bottom and spirals around the core as travels upwards to the outlet. When the water passes through the S.S. Chamber the equilibrium of the hardness causing ions is disturbed due to the high electrostatic field. This converts the scale forming ions into a non-adhesive type of sludge are effective in controlling scale through the formation of colloidal particles. As the water, bearing ions of calcium (negatively charged) and bicarbonates (positively charged), flow through the area between a charged electrode and a grounded plane, the direction of movement of the ions in solution is changed. They are either pulled toward or pushed from the electrostatic field, depending upon their charge. As these particles come into contact with one another they will begin to form particles of calcium carbonate and will move from solution to suspension in the water. In a suspended form (colloidal particle state), they are now relatively stable particles that are not inclined to Electrostatic field out or form deposits. They will remain in suspension in the fluid until they are removed by blow-down, filtration or precipitation. As ions move from solution to suspension, the water is now able to carry or attract other ion solution. As this occurs, existing scale deposits are gradually dissolved and removed. Electrostatic Type Water Treatment System (With Nominal Input Power) The eScale-Off system controls scaling by changing scale forming ions to neutral molecules with our positively charged electrode and ground. These stable molecules stay in suspension rather than attaching to wetted surfaces as scale. This is done on a continual basis during the normal recirculation of water past our electrodes. Removing the ions from the water also allows the water to dissolve existing deposits. The continual recirculation of the water also controls biological growth by raising the pH of the water and by the flow of water through our electrical fields. State-of-the-Art-Technology Electrostatic Non Chemical Water Treatment Scale Preventer–eSCALE-OFF which is the latest in water technology in consultancy with National Physical Laboratory Pusa Road, New Delhi. The system is very effective in Boilers, Cooling Tower, A. C. Plants, and Induction Moulds etc. Its theory was originated in America and won a noble prize in 1960. Today this system is most popular all over the world. The systems are working trouble free in Govt. sectors and different industries with various applications since 1997. Being a reputed manufacturer, we enjoy high reputation in design, supply, workmanship, commitments and services. The Electrostatic Scale-off Water Treatment Scale preventer System controls scaling by Influencing the formation of colloidal particles in the bulk solution. Ions that have a positive charge are pushed from the anode (positive electrode) and those with negative charges are pulled toward the anode. This electrical field also distorts the charged hydration clouds around the ions and on surface irregularities. This movement and the strong electrical field increase the probability that these ions will collide and form stable particles. These stable particles or “seed crystals” stay in suspension rather than plating out on heat exchange surfaces. Removing ions from solution in the water now allows the water to begin to dissolve existing scale deposits. The bulk precipitated particles can then be removed via blow down.(Cooling Tower Basin).