Description
Watts A4000 Polystyrene Divinylbenzene Cation Resin is a high purity, premium grade, pre-washed, strong acid gel-type cation exchange resin specially designed for water softening applications. A4000 is a bead type, cross-linked, polystyrene divinylbenzene resin that offers excellent bead integrity and very low extractables.
Resin Properties
- Type: 8% crosslink polystyrene
- Form: Gel- type, light amber bead
- Ionic form Na+ (as shipped)
- Functional group Sulphonic acid
- Bead size 16 x 50 mesh
- Effective size 0.45 ± 0.07 mm
- Bulk density ~ 51 lb/ft3
- Bead count min. 90%
- Water retention 45-48%
- Total capacity >2.0meq/l
- Volume change Na+ – H+ <5%
- Stability, temp. <300°F
- Stability pH 0 – 14
Design Conditions
- Bed depth >30 in
- Flow rate 2-5 gpm/ft3
- Freeboard 50% of bed depth
- Backwash expansion 50% of bed depth
- NaCl concentration for regeneration 5-25%
- NaCl flow rate for regeneration 0.25-0.5 gpm/ft3
- Turbidity <5.0 NTU
- Free chlorine <1 ppm
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