Hydrotek HB8CB-16DF-WB Automatic Battery-Operated Dual Flush Valve (1.6 / 1.0 GPF Closet)

The Hydrotek HB8CB-16DF-WB is a sophisticated, dual-flush concealed valve system designed for high-security commercial environments where water conservation and vandal resistance are the highest priorities. This sensor-operated system is engineered for behind-the-wall installation and includes a heavy-duty stainless steel wall box to protect the internal components. Featuring a dual-flush logic that delivers a full 1.6 GPF (6.0 LPF) for solids and a reduced 1.0 GPF (3.8 LPF) for liquids, this valve helps facilities significantly reduce water consumption without sacrificing flushing power. Configured for a 1-1/2" back spud connection and including a 1" inlet stop, it is the premier choice for stadiums, transit hubs, and correctional facilities.

Professional-Grade Engineering & Vandal Resistance

• Integrated Wall Box Security: The "WB" designation indicates the inclusion of a recessed stainless steel wall box. By housing the sensor and mechanical flush components within this secure enclosure, the system is shielded from tampering, theft, and impact. This makes it an ideal specification for high-traffic public restrooms and high-security institutions.
• Precision Piston Technology: Unlike traditional diaphragm valves, Hydrotek utilizes an industrial-grade piston mechanism. This design provides superior accuracy in flush volumes regardless of water pressure fluctuations and is highly resistant to mineral deposits and debris, ensuring a longer service life and reduced maintenance.
• Heavy-Duty Construction: Built with a high-quality brass valve body and industrial-grade VSI silicone elastomer seals, the system is specifically designed to resist the corrosive effects of chlorine and chloramines found in municipal water supplies.
• Concealed Back Spud Interface: Designed for 1-1/2" back spud closet fixtures, this configuration keeps all plumbing and electrical connections behind the wall, eliminating exposed piping that could be used as a leverage point for vandalism.

Advanced Sensor & Dual-Flush Logic

• Intelligent Dual-Flush Operation: The integrated sensor automatically determines the appropriate flush volume based on the user's duration in the sensing zone. This "Smart-Flush" logic provides a 1.0 GPF flush for shorter durations and a full 1.6 GPF flush for longer durations, optimizing water savings effortlessly.
• Touchless ADA Compliance: The infrared sensor provides a 100% hands-free experience, fulfilling all ADA accessibility requirements while improving facility hygiene by eliminating common touchpoints.
• Battery-Powered Independence: Powered by four (4) standard AA alkaline batteries, the HB8CB-16DF-WB is perfect for retrofitting existing facilities where hardwiring is difficult or for new construction looking for lower installation costs.
• Mechanical Manual Override: Includes a standard manual-mechanical override button, ensuring the toilet remains fully functional and can be flushed manually even if the batteries are exhausted.
• Automated Hygiene (Sentinel) Flush: Features a built-in 24-hour sentinel flush that automatically activates the valve during periods of low usage, keeping the trap seal primed to prevent sewer gases from entering the building.

Technical Specifications & Performance

• Application: Concealed (behind-the-wall) with recessed wall box.
• Fixture Type: 1-1/2" Back Spud Closet (Toilet).
• Inlet Size: 1" NPT.
• Flush Volume: Dual-flush 1.6 GPF / 1.0 GPF.
• Operating Pressure: Reliable performance across a pressure range of 10–125 PSI.

Shop at ProDryers: Achieve maximum water savings and unmatched security with a flush system built for the most demanding environments. Buy the Hydrotek HB8CB-16DF-WB at ProDryers to secure the best market pricing, or request a best price quote for your high-security renovation or LEED-certified commercial project today.