Duplex softeners are ideal for sites with varying water demand or for applications where a continuous and uninterrupted supply of softened water is required. The twin vessel configuration allows for one resin vessel to always be in service whilst the other is in regeneration or standby thus guaranteeing 24/7 soft water production.
The initiation of the regeneration cycle can be controlled by time clock, water quality or volume produced.
- Timer-controlled units tend be work best when daily soft water requirement is relatively constant, the units then being set to regenerate when general consumption low.
- Meter controlled models are ideal when daily water requirements are variable. Having sized the water softener correctly, the regeneration cycle occurs when the set capacity for producing soft water is reached (this is particularly useful when water and salt consumption must be kept to an absolute minimum)
- Where a specific water quality is consistently required, initiation of regeneration by output quality creates a safeguard ensuring that supply to service will always meet production requirements.