Hydrotek HB8SLE-R128D Automatic Solar-Powered Flush Valve Retrofit Kit (1.28 GPF Closet)

The Hydrotek HB8SLE-R128D is a high-performance, sensor-activated retrofit kit designed to modernize manual Delany closet flush valves using sustainable energy technology. Engineered for the rigors of commercial environments, this kit provides a consistent 1.28 GPF (4.8 LPF) flush, facilitating a significant reduction in water consumption compared to older 1.6 or 3.5 GPF systems. By harvesting ambient light to power its precision electronics, the HB8SLE-R128D offers facility managers a low-maintenance, "green" solution for achieving touchless hygiene and ADA compliance.

Sustainable Solar Harvesting & Power Management

• Ambient Light Energy System: The HB8SLE-R128D features integrated solar cells that harvest energy from both natural and artificial indoor light. This energy is stored in a long-life capacitor, providing a reliable 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 facility inactivity, the system includes a redundant battery backup. This dual-power architecture ensures consistent performance regardless of lighting conditions.
• Drastic Maintenance Reduction: By utilizing light as its primary power source, the system extends the lifecycle of the backup batteries to unprecedented intervals, significantly reducing maintenance labor and environmental waste from disposable batteries.

Professional-Grade Engineering & Delany Integration

• Precision Delany Compatibility: The "D" 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 existing heavy-duty brass valve body while introducing advanced electronic control.
• High-Efficiency Water Conservation: At 1.28 GPF, this kit meets the standards for High-Efficiency Toilets (HET). It is an essential component for facilities aiming to reduce utility overhead or achieve LEED and other green building certifications.
• Touchless ADA Compliance: By replacing manual handles with a high-performance infrared sensor, this kit provides a 100% hands-free user experience. This fulfills ADA accessibility requirements and eliminates a primary surface for cross-contamination.
• Industrial Piston Reliability: Hydrotek’s proprietary 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

• True Mechanical Manual Override: For maximum reliability, the HB8SLE-R128D includes a standard manual-mechanical override button. This ensures the closet remains fully functional for users even in the absence of light or power, preventing fixture downtime.
• Automated Hygiene (Sentinel) Flush: To maintain facility freshness and prevent sewer gases from entering the building, 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.
• VSI Silicone Elastomer Seals: The internal components feature industrial-grade silicone seals that are highly resistant to chloramines and other aggressive water treatment chemicals, preventing common leak points.

Technical Specifications & Performance

• Application: Solar-Powered Retrofit Kit for manual Delany Closet Valves.
• Fixture Type: Closet (Toilet).
• Flush Volume: High-Efficiency 1.28 GPF (4.8 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 facility with the ultimate in sustainable, sensor-activated reliability. Buy the Hydrotek HB8SLE-R128D at ProDryers to secure the best market pricing, or request a best price quote for your eco-friendly commercial upgrade or multi-unit renovation project today.

Download the Spec Sheet