Description
Complete twin water softener system for continuous operation consisting of:
- Runxin F73 Volumetric Auto Twin Head
- 2 pieces of 75lt resin per Vessel (diameter 34.5cm, height 140cm each vessel)
- Brine tank 100lt (diameter 46cm and height 88cm)
Twin Electronic Volumetric Head F73
Runxin’s F73 twin volumetric electronic head (valve) has a pulsating flowmeter (turbine type) and when the user-defined liters (cubic degree base) are consumed, the first column resin regeneration process begins. At the same time, the valve turns on the second vessel and in this way ensures continuous operation consisting of softened water.
The regeneration process takes place in 4 cycles, all of which are configurable:
- Backwash: Resin preparation. The resin is rinsed in the maximum flow of water to prepare it for the next step. We usually set it from 3 to 8 minutes depending on the installation.
- Brine & Slow Rinse: In this stage the head draws the salt water (sodium chloride) from the brine tank and irrigates the resin with it. It is the longest stage and lasts at least 60 minutes.
- Brine Refill: The head refills the brine tank with water. This process takes from 3 to 10 minutes depending on the installation.
- Fast Rinse: The resin is rinsed at maximum flow to remove salt residue and return to its original state ready to deliver softened water again. This process takes from 5 to 10 minutes depending on the installation.
Softening Resin Dupont DOW DOWEX HCR-S/S
Dupont Dow Chemicals is the world’s largest resin manufacturer. Based in USA, it counts over 600 resins specialized for hundreds of applications. The resin we use DOWEX HCR-S/S is a strong cationic suitable for potable water softening applications. It has WQA certification according to NSF/ANSI-61 and is compliant with the American regulation FDA Regulation 21 CFR 173.25.
Specifications
Head Type | RUNXIN F73 volumetric |
Maximum Flow Rate | 3.5m³/h |
Operating Pressure | min 2 Bar – max 6 Bar |
Regeneration Type | Down Flow |
Connections inlet / outlet | 1″ male thread |
Drain Hose | faucet Φ16 |
Electrical Connection | 220V/12V – 50Hz |
Brine Tank | Made of polypropylene (PP) with 100lt capacity |
Pressure Vessel | 13″ x 54″ With DOW DUPONT DOWEX HCR-S/S Strong Cationic Food-grade Resin |
Amount of Resin per Vessel | 75lt |
Total Amount of Resin | 150lt |
Capacity Cubic degrees per column | 140 (m3 x °F) |
Temperature Range | min 5°C – max 50°C |
Power supply | 230 VAC / 50 Hz |
Conditions for Correct Operation of the Softener
- If the mains pressure is above 6 bar, a pressure reducer is recommended.
- Installation of a sediment filter (melt 20μm) before the softener inlet to protect the head.
- It is recommended to use salt in tablets.
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