Hydrotek HB8SLE-R16DFD Automatic Solar-Powered Dual-Flush Retrofit Kit (1.6 / 1.0 GPF Closet)

The Hydrotek HB8SLE-R16DFD is a professional-grade, sensor-activated dual-flush retrofit kit engineered specifically for the modernization of manual Delany closet flush valves. This advanced system combines sustainable solar energy harvesting with precision dual-flush logic, allowing facilities to maintain a powerful 1.6 GPF (6.0 LPF) full flush for solid waste while providing a water-saving 1.0 GPF (3.8 LPF) reduced flush for liquid waste. By upgrading existing Delany valves with this touchless technology, facility managers can significantly reduce water consumption and improve restroom hygiene without the cost of a full plumbing overhaul.

Sustainable Solar Energy Harvesting & Reliability

• Ambient Light Power System: The HB8SLE-R16DFD features integrated solar panels designed to harvest energy from both natural and artificial indoor light. This energy is stored in a long-life internal capacitor, providing a consistent power source that operates independently of the building’s electrical grid.
• Redundant Battery Backup: To ensure 100% operational uptime in low-light environments or during periods of extended darkness, the system includes a redundant battery backup. This dual-power architecture ensures the sensor and solenoid remain fully functional regardless of lighting conditions.
• Minimal Maintenance Lifecycle: By utilizing ambient light as its primary power source, the system drastically extends the life of the backup batteries, reducing maintenance labor and the environmental impact of disposable battery waste.

Professional-Grade Engineering & Delany Integration

• Precision Delany Compatibility: The "DFD" designation confirms this kit is custom-tailored for a seamless mechanical fit with Delany manual closet flush valves. This allows for a rapid "top-down" installation that preserves the heavy-duty brass valve body while introducing advanced electronic control.
• Intelligent Dual-Flush Logic: The advanced infrared sensor features sophisticated "User-In-View" timing. The system automatically determines the appropriate flush volume based on the duration of use, maximizing water conservation without compromising fixture cleanliness or performance.
• Touchless ADA Compliance: By replacing manual handles with a high-performance sensor, this kit provides a 100% hands-free user experience. This fulfills ADA accessibility requirements and eliminates a primary surface for cross-contamination in high-traffic commercial environments.
• Industrial Piston Reliability: Hydrotek’s proprietary industrial-grade piston technology ensures a precise flush volume regardless of water pressure fluctuations. The piston mechanism is highly resistant to mineral buildup and debris, outperforming traditional diaphragm kits in both longevity and maintenance intervals.

Advanced Sensor & Hygiene Features

• Significant Water Savings: By providing a 1.0 GPF reduced flush option, this kit helps facilities reduce total water consumption by up to 30% compared to standard single-flush 1.6 GPF valves, making it an ideal choice for green building initiatives.
• True Mechanical Manual Override: For maximum reliability, the HB8SLE-R16DFD includes a standard manual-mechanical override button. This ensures the toilet remains fully functional for users even in the absence of light or power, preventing fixture downtime.
• Automated Hygiene (Sentinel) Flush: To maintain fixture freshness and prevent sewer gases from entering the facility, the integrated electronics feature a built-in 24-hour sentinel flush. If the fixture is not used for a full day, the system automatically triggers a flush to maintain the trap seal.
• Smart Self-Diagnostics: The system includes sophisticated self-diagnostic logic and a manual reset function, allowing facility maintenance staff to quickly troubleshoot performance and ensure consistent uptime.

Technical Specifications & Performance

• Application: Solar-Powered Dual-Flush Retrofit Kit for manual Delany Closet Valves.
• Fixture Type: Closet (Toilet).
• Flush Volume: Dual-Flush 1.6 GPF / 1.0 GPF (6.0 LPF / 3.8 LPF).
• Power Source: Solar-Powered with Battery Backup (Ambient Light Harvesting).
• Operating Pressure: Reliable performance across a pressure range of 10–125 PSI.

Shop at ProDryers: Modernize your Delany fixtures with the ultimate combination of sustainable solar power and high-efficiency dual-flush performance. Buy the Hydrotek HB8SLE-R16DFD at ProDryers to secure the best market pricing, or request a best price quote for your commercial facility upgrade or multi-unit renovation project today.

Download the Spec Sheet