Hydrotek HB8CT-128DF-WB Automatic Dual-Flush Flush Valve (1.28 / 1.0 GPF Closet)

The Hydrotek HB8CT-128DF-WB is the definitive solution for high-traffic commercial environments requiring the ultimate balance of water efficiency, user hygiene, and architectural security. This high-efficiency dual-flush closet valve provides a full 1.28 GPF (4.8 LPF) flush for solids and a reduced 1.0 GPF (3.8 LPF) flush for liquid waste, meeting strict WaterSense and LEED Platinum conservation standards. Designed for behind-the-wall installation and featuring an integrated heavy-duty stainless steel wall box, it offers an elite level of protection against vandalism while ensuring long-term operational reliability.

Professional-Grade Engineering & Vandal Resistance

• Integrated Wall Box Security: The "WB" designation indicates the inclusion of a recessed stainless steel wall box. By concealing the infrared sensor, flushing logic, and mechanical components within this secure enclosure, the system is shielded from tampering, impact, and theft. This configuration is essential for high-security facilities, transportation hubs, and public stadiums.
• Industrial-Grade Piston Technology: Hydrotek’s proprietary piston design provides a significant performance advantage over traditional diaphragm valves. The piston ensures highly accurate and consistent flush volumes across both 1.28 and 1.0 GPF settings, regardless of water pressure fluctuations. It is also exceptionally resistant to mineral deposits and debris, which are the primary causes of valve failure and leaks.
• Corrosion-Resistant Internals: Built with a high-quality brass valve body and industrial-grade VSI silicone elastomer seals, the system is engineered to withstand the aggressive effects of chlorine and chloramines found in modern municipal water supplies.
• Concealed Top Spud Interface: Configured for a 1-1/2" top spud connection and including a 1" inlet stop, the valve body remains behind the wall for maximum security while interfacing seamlessly with standard high-efficiency top-access closet fixtures.

Intelligent Dual-Flush Sensor Logic

• Automated Conservation: The sophisticated infrared sensor utilizes proprietary logic to determine the required flush volume based on the duration of the user's presence. This "smart" operation ensures consistent water savings by removing the need for user decision-making or manual handle selection.
• Touchless ADA Compliance: Provides a 100% hands-free experience, fulfilling all ADA accessibility requirements and significantly improving facility hygiene by eliminating common touchpoints and reducing cross-contamination.
• Battery-Powered Independence: Powered by four (4) standard AA alkaline batteries, the HB8CT-128DF-WB is the ideal solution for retrofitting facilities where hardwiring is cost-prohibitive or for new construction seeking simplified installation.
• True Mechanical Manual Override: Features a standard manual-mechanical override button that remains fully functional even in the event of battery exhaustion, ensuring the toilet is always operational and flushing is available for users.
• Smart Self-Diagnostics: Includes integrated self-diagnostic capabilities and a manual reset function to simplify troubleshooting and streamline routine maintenance for facility staff.

Technical Specifications & Performance

• Application: Concealed (behind-the-wall) with recessed wall box.
• Fixture Type: 1-1/2" Top Spud Closet (Toilet).
• Inlet Size: 1" NPT.
• Flush Volume: Dual Flush 1.28 GPF (4.8 LPF) / 1.0 GPF (3.8 LPF).
• Operating Pressure: Reliable performance across a pressure range of 10–125 PSI.

Shop at ProDryers: Achieve the highest LEED ratings and maximize facility security with the ultimate in high-efficiency dual-flush technology. Buy the Hydrotek HB8CT-128DF-WB at ProDryers to secure the best market pricing, or request a best price quote for your high-efficiency commercial renovation or new construction project today.