Industrial Downflow Softeners

The SEION D-Flow softener is a manually operated ion exchange unit designed specially for industrial use. It is simple to operate, inexpensive to maintain and is widely used in the industry.
The softener comprises a steel pressure vessel containing a bed of cation exchange resin, regenerating system and control valves. A strongly acidic cation resin in sodium form is used to exchange sodium ion for produce soft water, at the end of each service cycle, the ion exchange resin is regenerated with sodium chlo-ride solution, after which the unit is ready for the next service cycle.
For introducing the brine into the unit, a hydraulic ejector with control valve and suction and delivery piping are provided. A combined salt tank which can hold sufficient quantity of salt for a number of regenerations is provide, for large plants, a brine measuring tank is provided, and a separate salt saturate, pre-ferably in concrete, is recommended for bulk storage of salt and preparation of brine. Standard equipment is available to soften water, up maximum flow rate of 275m3/h.

Advantages :

  • Easy to install and operate.
  • Produces clear, soft and non-scale forming water.
  • Low operating costs.
  • Incorporates high capacity polystyrene bead type cation exchange resin which is remarkably stable and a long life.

Specifications :

  • One mild steel pressure vessel provided with an inlet distributor.
  • An outlet collecting system and a brine distributor the vessel is painted externally with a protective coat of red oxide and internally with anti-corrosive bituminous paint.
  • One set of control-resistant combined salt tank/brine measuring tank, provided with brine suction piping with adjustable indicating clamp, hydraulic ejector and control value.
  • One set of fitting of concrete salt saturator, wherever applicable to be constructed by the client, one orifice board for indicating wash and resin flow rate (to be fitted in the drain sump).
  • One charge of cation exchange resin with supporting underbed.
  • One hardness test kit for testing the softened water.
Model  SEION Max. Flow Rates Working Pressure Regenerants
Sodium Chloride 100%
Min Max. Min. Max.
  m3/h kg/cm2 kg/cm2 kg kg
DFS-625

DFS-825

DFS-1025

DFS-1220

DFS-1225

DFS-1420

DFS-1425

DFS-1620

DFS-1625

DFS-1820

DFS-1825

DFS-2020

DFS-2025

DFS-2220

DFS-2225

DFS-2420

DFS-2425

DFS-2620

DFS-2625

DFS-2820

DFS-2825

DFS-3020

DFS-3025
13.0

23.0

35.0

50.0

50.0

70.0

70.0

90.0

90.0

114.0

114.0

140.0

140.0

170.0

170.0

200.0

200.0

240.0

240.0

275.0

275.0

275.0

275.0
1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8
3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5
29.0

51.0

80.0

116.0

116.0

157.0

157.0

204.0

204.0

259.0

259.0

327.0

327.0

388.0

388.0

459.0

459.0

541.0

541.0

628.0

628.0

724.0

724.0
55.0

100.0

160.0

170.0

230.0

230.0

310.0

300.0

405.0

380.0

515.0

475.0

635.0

575.0

775.0

690.0

925.0

805.0

1080.0

935.0

1255.0

1080.0

1445.0

Note :

  • output between regenerations depends on the raw water quality.