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The TOTO TOTPTHU800-A is a drain valve assembly designed as a replacement component for TOTO 1-piece toilets. The drain valve controls water release from the tank into the bowl during a flush cycle, making it a critical functional part in the toilet's flushing mechanism. This assembly is installed by licensed plumbers or experienced service technicians performing tank rebuild work or addressing flush performance issues in residential plumbing systems.
This drain valve assembly is intended for use in 1-piece toilet configurations. It is a direct replacement part sourced from TOTO, suitable for tank service and repair work where the original drain valve has failed, worn, or is causing incomplete or inefficient flush cycles. Installers should verify the part number against the toilet model before ordering to confirm fitment.
Designed as an OEM-style replacement drain valve assembly for TOTO 1-piece toilet models. Verify the specific toilet model number against TOTO documentation before installation.
Installation is typically performed by a licensed plumber. Shut off the water supply valve at the wall before beginning any tank disassembly, and fully flush and drain the tank to avoid spillage. Follow local plumbing codes, including IPC guidelines, for fixture repair work. Do not overtighten plastic fittings or valve components during reassembly.
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