Hydrotek HB8CRFKC-16DF Automatic Dual-Flush Closet Retrofit Kit (1.6 / 1.0 GPF)

The Hydrotek HB8CRFKC-16DF is a high-performance, battery-powered concealed retrofit kit engineered to transform existing manual flushometers into advanced, touchless dual-flush systems. Specifically designed for concealed installations, this kit is compatible with industry-standard Sloan Royal/Sloan and Zurn Z9000 series valve bodies. By integrating intelligent dual-flush technology—delivering a full 1.6 GPF for solids and a reduced 1.0 GPF for liquids—this kit allows facility managers to significantly reduce water consumption and utility costs without the need for a complete valve replacement.

Professional-Grade Engineering & Retrofit Compatibility

• Seamless Concealed Integration: Engineered specifically for behind-the-wall installations, providing a clean, vandal-resistant restroom aesthetic while upgrading performance.
• Universal Valve Compatibility: Precision-fit design for seamless integration with existing Sloan and Zurn concealed closet valve bodies, making it the premier choice for facility-wide upgrades.
• Industrial-Grade Piston Operation: Unlike diaphragm-based alternatives, Hydrotek’s piston technology ensures consistent flush volumes and superior resistance to waterborne debris and pressure fluctuations.
• Chemical-Resistant Components: Features high-quality VSI silicone elastomer seals that resist degradation from chlorine, chloramines, and ammonia, ensuring a leak-free service life in harsh water conditions.

Advanced Dual-Flush Intelligence

• Automated Water Conservation: The sophisticated sensor logic differentiates between "short" and "long" occupancy durations to automatically trigger either a 1.0 GPF or 1.6 GPF flush, optimizing water use per visit.
• Battery-Powered Efficiency: Operates on four (4) standard AA alkaline batteries, eliminating the need for expensive electrical hardwiring. The low-power consumption circuit is designed for years of reliable operation in high-traffic settings.
• Touchless ADA Compliance: Provides a fully sanitary, hands-free experience that meets all ADA accessibility standards, reducing cross-contamination and improving the user experience.
• Smart Self-Diagnostics: Includes an integrated electronic system with self-diagnostic capabilities and a manual reset function to simplify troubleshooting and routine maintenance.
• Hygiene (Sentinel) Flush: Features a programmable 24-hour sentinel flush to maintain the fixture’s trap seal during periods of low occupancy, preventing sewer gas odors.

Technical Specifications & Performance

• Application: Concealed (behind-the-wall) water closet retrofit.
• Flush Volumes: Dual-flush 1.6 GPF (full) / 1.0 GPF (reduced).
• Operating Pressure: Reliable performance across a wide range of 10–125 PSI.
• Ease of Installation: Designed for quick installation into existing valve bodies, minimizing restroom downtime during upgrades.

Shop at ProDryers: Modernize your facility's concealed plumbing with a dual-flush solution that prioritizes sustainability and durability. Buy the Hydrotek HB8CRFKC-16DF at ProDryers to secure the best market pricing, or request a best price quote for your next large-scale commercial retrofit or LEED-certification project today.

Download the Spec Sheet