RUNXIN F73A Automatic Duplex Softener Valve | 3.5 m³/h

The RUNXIN F73A Automatic Duplex Softener Valve is a meter-controlled twin-tank valve designed for continuous softened-water supply. One resin vessel remains in service while the second vessel is on standby or regenerating, helping to prevent treatment interruptions in commercial, hospitality, industrial and reverse osmosis pre-treatment applications.

Key Benefits

• ✓ Continuous duplex operation: Automatically alternates between two softener vessels so one tank remains available while the other regenerates.
• ✓ Meter-controlled regeneration: Regeneration is initiated according to treated-water volume and programmed operating parameters.
• ✓ Flexible regeneration modes: Supports programmable down-flow or up-flow regeneration.
• ✓ Digital control: Multicolour display, automatic button lock and manual regeneration override.
• ✓ External control integration: Includes signal output, remote handling input and pressure-relief output connections.
• ✓ Reliable operation: Corrosion-resistant ceramic sealing surfaces provide dependable opening, closing and tank switching.

Technical Specifications

• Model: RUNXIN F73A / F73 / 17603
• Maximum service flow: 3.5 m³/h at 0.3 MPa
• Operating pressure: 0.15–0.6 MPa
• Water temperature: 5–50 °C
• Inlet and outlet connections: 1-inch BSP
• Drain connection: ½-inch
• Brine connection: ⅜-inch
• Tank mounting: Two 2½-inch threaded bases
• Riser tube: 26.7 mm outside diameter
• Tank centre spacing: 375 mm
• Power adapter output: DC 12 V, 1.5 A
• Power adapter input: AC 100–240 V, 50–60 Hz
• Regeneration: Down-flow or up-flow

Suitable Applications

• Commercial and industrial duplex water softeners
• Hotels, restaurants, laundries and high-demand properties
• Boiler and cooling-system pre-treatment
• Reverse osmosis pre-treatment
• Applications requiring continuous softened-water availability

Important Installation Notes

• • Professional installation, programming and commissioning are recommended.
• • Install a pressure-reducing valve where inlet pressure exceeds 0.6 MPa, or a booster pump where pressure is below 0.15 MPa.
• • Install indoors in a clean, dry environment between 5 °C and 50 °C.
• • The injector, drain-line flow control and regeneration settings must be matched to the vessel size, resin volume, inlet hardness, pressure and required flow rate.
• • This listing is for the automatic duplex valve assembly. Resin vessels, softening resin, brine tank and installation components are not included unless specifically stated.

Configuration Note: Final system sizing and settings should be confirmed by a qualified water-treatment technician before installation.