RP-U18

About RP-U18

RP-U18 is a compact under-sink water softener (X618) with a rated flow of 1.5 t/h. One cycle produces 0.9 m³ at 340 ppm hardness, with 7L of resin and 8 ± 0.5 kg of salt storage, at 470 × 198 × 415 mm. It is built for brand owners who want a compact softener to pair with an under-sink water line.

Why buyers choose it

• Rated flow of 1.5 t/h in a compact 470 × 198 × 415 mm unit.
• Cycle water volume of 0.9 m³ at 340 ppm hardness.
• 7L resin volume with 8 ± 0.5 kg salt storage.
• Voltage / frequency is configurable to the target country.

Best for

• Homes with hard water that need softening under the sink.
• Kitchens and small whole-house installations that need a compact softener.
• Brands adding a compact under-sink softener to a water treatment line.

Frequently asked questions

What is the minimum order quantity?

The first order is 200 units per model, and reorders are 500 units.

Can I order a sample before a bulk order?

Yes. Samples are ready in 15 days, and the sample fee is refunded on your first bulk order. Bulk orders take 40 days after sample approval and ship FOB Shenzhen.

How much water does one cycle produce?

One cycle produces 0.9 m³ at 340 ppm hardness.