Amberlite PWA7

Summary

Product identification

AMBERLITE™ PWA7 Resin Drinking Water Grade Chromate Selective

AMBERLITE PWA7 resin is an anion exchange resin designed for the removal of chromate from drinking water.

Properties

• Matrix: Cross linked polycondensate
• Physical form: Cream coloured granules
• Total exchange capacity: ≥ 1.9 eq/L
• Moisture holding capacity: 58 – 68%
• Shipping weight: 610 kg/m³ (38 lb/ft³)
• Particle Size:
  • Screen grading: 0.3 – 1.2 mm (16 – 50 mesh US Std Screens)
  • Fines content (<0.300 mm): 3% max

Suggested Operating Conditions

• pH range: < 6.5
• Maximum operating temperature: 40 °C (105 °F)
• Minimum bed depth: 610 mm (24 inches)
• Typical service flow rate: 8 – 40 BV/hr* (1 – 5 gpm/ft³)
  • *1 BV (Bed Volume) = 1 m³ solution per m³ resin

Commissioning and Limits of Use

AMBERLITE PWA7 resin is suitable for use in potable water applications after an initial commissioning upflow rinse of 20 bed volumes of water at ambient temperature at service flow rate. The operating capacity depends on operating and feed water conditions.

Hydraulic Characteristics

Pressure drop and bed expansion data are presented in figures (see official PDF). Pressure drop is valid at the start of the service run with clean water and a correctly classified bed.

Regulatory

AMBERLITE PWA7 resin is certified to ANSI / NSF Standard 61 for drinking water components for applications with minimum flow rates greater than or equal to 1.1 gpm/ft³. Resin products are manufactured in ISO 9001 certified facilities.

Disclaimer: Extraction may miss figures, footnotes, or revisions; contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror