Resin Water Softeners DamaTajhiz are manufactured in semi-automatic and fully automatic models with suitable delivery times and have been supplied since 2004. Below, the technical specifications, selection guide, sales track record, and the best purchase prices of DamaTajhiz resin water softeners are presented for respected employers and engineering professionals.
In general, a resin water softener is responsible for removing dissolved minerals and salts from the water used in building heating and cooling systems. These systems are categorized into semi-automatic and fully automatic resin water softeners. The difference between semi-automatic and fully automatic water softeners lies in the manual or automatic adjustment of the multi-port control valve as well as the backwash and resin regeneration processes. In semi-automatic units, if backwashing is not performed regularly and periodically, the softener’s performance gradually declines and may eventually fail. In fully automatic resin water softeners, the backwash process is carried out completely automatically.
Note: If there is no maintenance technician regularly present in the mechanical room to perform weekly or monthly resin backwashing, the required water softener should be selected as a fully automatic type. It should also be noted that DamaTajhiz resin water softeners are usually supplied with Purolite resin based on the request of engineers and project owners.
Below, you can view, review, select, and purchase various DamaTajhiz resin water softeners with standard or fast delivery times.

The necessity of removing water hardness, or dissolved minerals, is due to the fact that these minerals, when water is heated or even cooled, form scale deposits on heat exchange surfaces such as the inner surfaces of boiler tubes and combustion chambers, coils of indirect hot water tanks, heat transfer surfaces in heat exchangers, condensers and evaporators of chillers, fan coil unit coils, air handling units, and more. This scaling reduces heat transfer efficiency and ultimately lowers overall system performance.
To select and purchase a water softener, you must first determine the required type, capacity, resin material, and other specifications.
The price of DamaTajhiz resin water softeners varies depending on type, capacity, body material, application location, and other factors.
It should be noted that all water softeners offered by DamaTajhiz are competitively priced, and customer-requested discounts have already been applied. At the specialized DamaTajhiz collection, you can review and select various resin water softeners at the best available prices.

Another important point when purchasing a resin water softener is accurate capacity calculation. Therefore, after determining the circulating water volume of the project’s heating and cooling system and measuring the water hardness at the project site (using available test kits or specialized instruments), the required resin water softener capacity can be calculated with sufficient accuracy using the following formula.
DamaTajhiz Engineering Company also manufactures all types of duplex and even triplex resin water softeners in full compliance with technical and engineering standards.
The table below presents the technical specifications and best purchase prices of various DamaTajhiz resin water softeners.
| Model | Capacity (grain) | Resin Volume (L) | Valve & Connection Size (In) | Max Flow Rate G.P.M | Pressure (bar) | Dimensions (cm)(Height×Diameter) |
Salt Tank (L) | Silica Amount (kg) | Sheet Material | Sheet Thickness (mm) |
Price (USD) |
| DT.W.S 30 | 30,000 | 25 | ¾" | 6 | 4 | 100×25 | 60 | 10 | Carbon Steel | 3 | 317 |
| DT.W.S 60 | 60,000 | 50 | ¾" | 12 | 4 | 120×30 | 60 | 15 | Carbon Steel | 3 | 403 |
| DT.W.S 90 | 90,000 | 75 | 1" | 19 | 4 | 120×40 | 100 | 20 | Carbon Steel | 3 | 498 |
| DT.W.S 120 | 120,000 | 100 | 1" | 25 | 4 | 150×40 | 140 | 30 | Carbon Steel | 4 | 607 |
| DT.W.S 150 | 150,000 | 125 | 1" | 30 | 4 | 150×50 | 140 | 80 | Carbon Steel | 4 | 709 |
| DT.W.S 180 | 180,000 | 150 | 1" | 35 | 4 | 150×50 | 200 | 50 | Carbon Steel | 4 | 765 |
| DT.W.S 200 | 200,000 | 175 | 1" | 40 | 4 | 160×50 | 200 | 50 | Carbon Steel | 4 | 837 |
| Model | Capacity (grain) | Resin Volume (Lit) | Valve & Connection Size (In) | Max Flow Rate G.P.M | Pressure (Bar) | Softener Dimensions (cm)(Height*Diameter) |
Salt Tank (Lit) | Silica Amount (kg) | Sheet Material | Sheet Thickness (mm) |
Price (USD) |
| DT.W.S 30- automatic | 30,000 | 25 | ¾" | 6 | 4 | 100*25 | 60 | 10 | Black Sheet | 3 | 403 |
| DT.W.S 60- automatic | 60,000 | 50 | ¾" | 12 | 4 | 120*30 | 60 | 15 | Black Sheet | 3 | 472 |
| DT.W.S 90- automatic | 90,000 | 75 | 1" | 19 | 4 | 120*40 | 100 | 20 | Black Sheet | 3 | 581 |
| DT.W.S 100- automatic | 100,000 | 100 | 1" | 22 | 4 | 120*45 | 100 | 30 | Black Sheet | 3 | Inquiry |
| DT.W.S 120- automatic | 120,000 | 100 | 1" | 25 | 4 | 150*40 | 140 | 30 | Black Sheet | 4 | 709 |
| DT.W.S 150- automatic | 150,000 | 125 | 1" | 30 | 4 | 150*50 | 140 | 80 | Black Sheet | 4 | 825 |
| DT.W.S 180- automatic | 180,000 | 150 | 1" | 35 | 4 | 150*50 | 200 | 50 | Black Sheet | 4 | 886 |
| DT.W.S 200- automatic | 200,000 | 175 | 1" | 40 | 4 | 160*50 | 200 | 50 | Black Sheet | 4 | 943 |
| DT.W.S 250- automatic | 250,000 | 225 | 1" | 55 | 4 | 150*60 | 220 | 60 | Black Sheet | 4 | 1130 |
| DT.W.S 300- automatic | 300,000 | 330 | 1¼" | 65 | 4 | 170*60 | 300 | 60 | Black Sheet | 4.5 | 1405 |
| DT.W.S 350- automatic | 350,000 | 325 | 1¼" | 70 | 4 | 200*60 | 400 | 75 | Black Sheet | 4.5 | 1622 |
| DT.W.S 450- automatic | 450,000 | 400 | 1¼" | 83 | 4 | 200*75 | 500 | 75 | Black Sheet | 4.5 | Inquiry |
| DT.W.S 500- automatic | 500,000 | 450 | 1½" | 95 | 4 | 200*75 | 500 | 75 | Black Sheet | 4.5 | Inquiry |
| DT.W.S 600- automatic | 600,000 | 550 | 2" | 122 | 4 | 200*90 | 500 | 100 | Black Sheet | 5 | Inquiry |
| DT.W.S 720- automatic | 720,000 | 700 | 2" | 130 | 4 | 200*90 | 1000 | 100 | Black Sheet | 5 | Inquiry |
| DT.W.S 800- automatic | 800,000 | 755 | 2" | 148 | 4 | 200*100 | 1000 | 100 | Black Sheet | 5 | Inquiry |
| DT.W.S 900- automatic | 900,000 | 825 | 2" | - | 4 | 200*110 | 1000 | 560 | Black Sheet | 5 | Inquiry |
| DT.W.S 1000- automatic | 1,000,000 | 950 | 2" | 178 | 4 | 200*110 | 1000 | 200 | Black Sheet | 6 | Inquiry |
| DT.W.S 1200- automatic | $12 | 1250 | 1/2 2" | - | 4 | 200*120 | 1000 | 720 | Black Sheet | 6 | Inquiry |
| DT.W.S 1500- automatic | $15 | 1500 | 1/2 2" | - | 4 | 250*120 | 2000 | 720 | Black Sheet | 6 | Inquiry |
| DT.W.S 1800- automatic | $18 | 1700 | 1/2 2" | - | 4 | 250*120 | 2000 | 720 | Black Sheet | 6 | Inquiry |
| DT.W.S 2000- automatic | $20 | 2100 | 4" | - | 4 | 250*150 | 2000 | 1000 | Black Sheet | 6-8 | Inquiry |
| DT.W.S 2500- automatic | $25 | 2400 | 4" | - | 4 | 250*150 | 2000 | 1000 | Black Sheet | 6-8 | Inquiry |
| DT.W.S 3000- automatic | $30 | 4200 | 4" | - | 4 | 250*200 | 2000 | 1800 | Black Sheet | 8-10 | Inquiry |
| DT.W.S 3500- automatic | $35 | 4700 | 4" | - | 4 | 250*200 | 2000 | 1800 | Black Sheet | 8-10 | Inquiry |
| Model | Max Capacity (Grain) | Max Resin Volume (Lit) | Valve & Connection Size (In) | Max Flow Rate G.P.M | Salt Tank (Lit) | Resin Type | Dimensions (H*D cm) | Price (USD) |
| DT.W.S P 30 Auto | 30000 | 25 | ¾" | 6 | 60 | Prolite | 113*20 | Inquiry |
| DT.W.S 60 P Auto | 60000 | 50 | >¾" | 12 | 60 | Prolite | 140*25 | Inquiry |
| DT.W.S P 90 Auto | 90000 | 75 | ¾" | 19 | 100 | Prolite | 150*40 | Inquiry |
| DT.W.S 120 P Auto | 120000 | 100 | 1" | 25 | 200 | Prolite | 160*40 | Inquiry |
| DT.W.S 150 P Auto | 150000 | 125 | 1" | 30 | 200 | Prolite | 167*40 | Inquiry |
| DT.W.S 180 P Auto | 180000 | 150 | 1" | 35 | 200 | Prolite | 160*50 | Inquiry |
| DT.W.S 200 P Auto | 200000 | 175 | 1" | 40 | 200 | Prolite | 160*60 | Inquiry |
| DT.W.S 250 P Auto | 250000 | 225 | 1" | 55 | 200 | Prolite | 160*60 | Inquiry |
| DT.W.S 270 P Auto | 270000 | 250 | 1¼" | 60 | 300 | Prolite | 160*60 | Inquiry |
| DT.W.S 350 P Auto | 350000 | 325 | 2" | 65 | 300 | Prolite | 185*60 | Inquiry |
| DT.W.S 300 P Auto | 300000 | 275 | 1½" | 65 | 300 | Prolite | 160*70 | Inquiry |
| DT.W.S 400 P Auto | 400000 | 400 | 2" | 83 | 400 | Prolite | 185*75 | Inquiry |
| Model | Max Capacity (Grain) | Max Resin Volume (Lit) | Valve & Connection Size (In) | Max Flow Rate G.P.M | Salt Tank (Lit) | Resin Type | Dimensions (H*D cm) | Price (USD) |
| DT.W.S 30 Manual | 30000 | 25 | ¾" | 6 | 60 | Prolite | 113*20 | Inquiry |
| DT.W.S 60 Manual | 60000 | 50 | ¾" | 12 | 60 | Prolite | 140*25 | Inquiry |
| DT.W.S 90 Manual | 90000 | 75 | ¾" | 19 | 100 | Prolite | 150*40 | Inquiry |
| DT.W.S 120 Manual | 120000 | 100 | 1" | 25 | 200 | Prolite | 160*40 | Inquiry |
| DT.W.S 150 Manual | 150000 | 125 | 1" | 30 | 200 | Prolite | 167*40 | Inquiry |
| DT.W.S 180 P Manual | 180000 | 150 | 1" | 35 | 200 | Prolite | 160*50 | Inquiry |
| DT.W.S 200 Manual | 200000 | 175 | 1" | 40 | 200 | Prolite | 160*60 | Inquiry |
| DT.W.S 250 Manual | 250000 | 225 | 1" | 55 | 200 | Prolite | 160*60 | Inquiry |
DamaTajhiz; Thousands of Products for Thousands of Projects (Since 2004)
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Espandar Lime Plant Project: 1 DamaTajhiz 350,000-Grain Fully-Automatic Resin Water Softener(s).

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