The F63C3 is an automatic multi-functional control valve designed specifically for water softening systems (ion-exchange resin based). It supports time- or meter-based regeneration (i.e., regeneration triggered by volume of water passed) and is built for residential to light commercial use. 
It features top-mount installation on softener tanks, automatic switching between service, backwash, brine & slow rinse, brine refill, fast rinse, and return to service.

Key Specifications & Features

• Inlet/Outlet: 1″ male (approx 25mm nominal) 
• Drain Port: ½″ male (~15mm) 
• Base thread: 2.5″-8 NPSM (for mounting on softener tank) 
• Flow Rate: Up to ~4 m³/h (≈4000 L/h) in typical installations. 
• Control Modes: It supports meter-type regeneration (based on water volume) or time-clock regeneration via program selection. 
• Manual Override: “Manual/Return” button allows immediate regeneration at any time. 
• Long Outage Indicator: If power is off for > 3 days, the display time flashes to remind reset. Other parameters remain.
• LED/LCD Interface: Visual display shows status (service vs regeneration) via flashing indicators. 
• Button Lock: If no button pressed in 1 minute, buttons lock; unlock by pressing Up + Down for 5 seconds. 
• External Signal / Interlock: Connector for remote input (PLC/computer) and interlocking when multiple valves in parallel/series. 
• Construction: Hermetic head faces with high-degree ceramic/porcelain-like resistant surfaces for reliable opening/closing and corrosion resistance.

Benefits

• Automates water softening regeneration cycles, reducing need for manual intervention.
• Meter-based regeneration (F63C3 version) increases salt/water efficiency by only regenerating when actual volume usage triggers it.
• Built for durability in typical softening environments with anti-corrosion sealing.
• Flexible programming – either volume-based or schedule-based regeneration.
• Suitable for retrofit or new installations owing to standard base/mount and clear controls.
• Manual override ensures flexibility in case of unusual water conditions.

Applications

• Residential and light commercial water softener systems (homes, small buildings, boiler feed systems).
• Ion-exchange systems for water hardness removal (pre-treatment for RO, boilers, cooling towers).
• Systems where accurate water usage tracking and efficient regeneration is desired (meter type).
• Where minimal maintenance and automation are preferred (automatic control head instead of manual valve).

Considerations & Installation Notes

• Ensure that your softener tank matches the base mounting specifications (2.5″-8 NPSM, riser pipe, etc). 
• For best performance: use water with turbidity within specified limits, and ensure resin media is in good condition. 
• Programming: Since this is meter type, set parameters such as resin volume, feed water hardness, treated water capacity, etc. 
• Power requirement: Typical control head uses low voltage (check supplier specs) and should be protected from power outages; indicator features help.
• Maintenance: Periodic checks of brine tank, salt level, injector, and tubing are recommended to ensure system regenerates properly.
• If using multiple softeners in parallel or series, make sure interlock wiring and system design allow only one valve to regenerate at a time to maintain service.