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The SPEAKMAN 26840 is a 26mm diverter cartridge designed for use in the Mark II valve body. This cartridge controls flow diversion within the valve assembly, directing water between outlets as required by the fixture configuration. It is a direct-replacement mechanism suited for service calls where the original cartridge has worn, cracked, or failed to seal properly. Licensed plumbers and experienced service technicians handle this type of repair. The beige color coding identifies this cartridge within the Speakman Mark II cartridge family.
This cartridge fits Mark II diverter valve bodies requiring a 26mm cartridge format. It is commonly encountered in commercial and institutional shower and lavatory applications where Speakman Mark II valves are installed. Replacement is performed during routine maintenance or when a fixture exhibits cross-flow, failure to divert, or internal leakage at the valve stem.
Designed as an OEM replacement cartridge for Speakman Mark II diverter valve bodies requiring a 26mm cartridge.
Installation is performed by a licensed plumber. Shut off the water supply and relieve line pressure before disassembling the valve body. Remove the handle and trim components to access the cartridge seat before extraction. Follow applicable IPC guidelines for fixture valve service.
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