Siena Filter Head — Duplex
Tax included where applicable. Delivery and installation arranged by your concierge.
NAVERQIO Water — the ingredient nobody tastes and everyone drinks
The Siena is the sensible guardian: a brass head with metered bypass, cartridges matched to espresso duty, and changes that are a hand-turn instead of a plumber. Scale never gets a vote.
Espresso water is designed, not filtered by luck. Our systems pair carbon and membrane stages with mineral dosing, so hardness and alkalinity land where boilers live long and cups taste sweet — typically 40 to 80 ppm with buffered alkalinity. Heads are brass, housings are pressure-rated far beyond mains, and every cartridge change is a hand-turn, not a plumber's visit.
Design & Craft
- Cartridge schedules printed to your daily draw
- Hardness and alkalinity landed where boilers live long and cups taste sweet
- Brass heads with metered bypass and hand-tight cartridge changes
- Pressure-rated housings far beyond mains; leak trays and shutoffs standard
- Push-fit connections a careful owner installs in an afternoon
Specifications
| Format | Duplex heads, no-interrupt change |
| Bypass | Metered, settable |
| Stages | Scale, chlorine, taste |
| Gauges | Supply + post-filter |
| Fitting | Push-fit, hand-tight |
| Weight | ≈ 9.3 kg |
| Warranty | 2 years; cartridges scheduled |
Care
Change cartridges by litres, not months — the meter on the head counts for you. Sanitise housings at each change, verify TDS quarterly with the included meter, and re-check the bypass setting whenever the machine or the menu changes.
Questions, Answered
Will this stop scale completely?
Set to the recommended bypass, yes, functionally — hardness lands where boilers live long. The included meter and our quarterly reminders keep the numbers honest.
Does RO waste much water?
Modern membranes with pressure assistance run far tighter than the old horror stories; drain ratios are in the specification, and drain-water heat is negligible at espresso volumes.
The NAVERQIO Promise
Two years parts and labour, fifteen years of parts on the shelf, and a service desk staffed by technicians who have actually stripped the model you own.