Zurn Z8104 Pressure Assisted Flush Tank 1.1 Gpf

Product Description

The ZURN Z8104 is a pressure-assisted flush tank designed for water-conserving toilet installations in residential and light commercial settings. It operates using a pressurized vessel inside the tank that harnesses incoming line pressure to deliver a forceful, complete flush at 1.1 gallons per flush (GPF). This low-consumption rating meets current WaterSense and water-efficiency standards without sacrificing flush performance. Licensed plumbers and facility maintenance professionals install this unit as either a new-construction component or a direct replacement on compatible pressure-assisted toilet systems.

The Z8104 is suited for residential bathrooms, multi-family housing, and light commercial restroom applications where water conservation and reliable flush performance are both priorities. Pressure-assisted technology is commonly specified in buildings with lower water pressure fluctuations, as the internal vessel maintains consistent flush force. This tank is installed on toilet bowls designed to accept pressure-assisted flush systems and is not interchangeable with standard gravity-feed tanks.

Key Features

• 1.1 GPF ultra-low-consumption flush rating for water efficiency compliance
• Pressure-assisted flushing mechanism uses line pressure for a powerful, complete flush
• Designed for residential and light commercial toilet installations
• Replaces or upgrades existing pressure-assisted tank assemblies on compatible bowls

Compatibility

Designed as an OEM-style replacement pressure-assisted flush tank for toilet systems engineered to accept pressure-assisted tank assemblies. Consult the toilet bowl manufacturer specifications to confirm fit before installation.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and fully flush the existing tank to depressurize and drain it before beginning any disassembly. Pressure-assisted systems retain pressurized water inside the vessel — do not attempt to disassemble the internal pressure vessel. Verify inlet supply pressure is within the range specified for pressure-assisted operation before completing the installation.

Technical Specifications

• Flush Volume: 1.1 GPF
• Flush Type: Pressure Assisted

Standard Information

• Brand: ZURN
• Manufacturer Part Number: Z8104