Hydrotek HB8-D1B-05-WB Automatic Battery-Operated Flush Valve (0.5 GPF Urinal)

The Hydrotek HB8-D1B-05-WB is a high-efficiency concealed flush valve system engineered for commercial environments that demand extreme water conservation and maximum security. This 0.5 GPF (1.9 LPF) urinal valve is designed for behind-the-wall installation and features an integrated stainless steel wall box, providing an elite level of protection against vandalism. Configured for a 3/4" back spud connection and including a 3/4" inlet stop, this system reduces water consumption by 50% compared to standard 1.0 GPF models, making it a premier choice for LEED-certified projects and high-traffic public facilities.

Professional-Grade Engineering & Vandal Resistance

• Integrated Wall Box Security: The "WB" designation signifies the inclusion of a heavy-gauge recessed stainless steel wall box. By housing the infrared sensor and mechanical components within this secure enclosure, the system is shielded from tampering, theft, and impact. This is the essential configuration for high-security environments such as correctional facilities, stadiums, and transportation hubs.
• Superior Piston Technology: Hydrotek’s industrial-grade piston design offers a significant performance advantage over traditional diaphragm valves. The piston ensures a precise 0.5 GPF flush regardless of water pressure fluctuations and is highly resistant to mineral deposits and debris, which are common causes of valve failure or continuous running.
• Corrosion-Resistant Internals: Manufactured with a high-quality brass valve body and industrial-grade VSI silicone elastomer seals, the system is engineered to withstand the harsh effects of chlorine, chloramines, and other chemicals found in modern municipal water supplies.
• Concealed Back Spud Interface: Designed specifically for 3/4" back spud urinals, this configuration keeps all plumbing and electrical connections behind the wall. This creates a modern, streamlined restroom aesthetic while eliminating exposed piping that could be targeted for vandalism.

Advanced Sensor & Logic Features

• Touchless ADA Compliance: The integrated infrared sensor provides a 100% hands-free experience, fulfilling all ADA accessibility requirements while significantly improving facility hygiene by eliminating common touchpoints.
• Battery-Powered Versatility: Powered by four (4) standard AA alkaline batteries, the HB8-D1B-05-WB is an ideal solution for both new construction and retrofitting facilities where hardwiring is difficult or cost-prohibitive.
• True Mechanical Manual Override: Features a standard manual-mechanical override button that remains fully functional even in the event of battery failure, ensuring the urinal is always operational for users.
• Automated Hygiene (Sentinel) Flush: Includes a built-in 24-hour sentinel flush feature that automatically activates the valve during periods of low occupancy. This keeps the fixture’s trap seal primed to prevent sewer gases from entering the building.
• Smart Self-Diagnostics: The electronic system 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: 3/4" Back Spud Urinal.
• Inlet Size: 3/4" NPT.
• Flush Volume: High-efficiency 0.5 GPF (1.9 LPF).
• Operating Pressure: Reliable performance across a pressure range of 10–125 PSI.

Shop at ProDryers: Modernize your facility with a high-efficiency flush valve that combines superior water savings with maximum security. Buy the Hydrotek HB8-D1B-05-WB at ProDryers to secure the best market pricing, or request a best price quote for your high-efficiency commercial renovation or LEED-certified project today.