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IAPMO PS 50-2019
Flush valves with dual flush device for water closet or water closet tank with integral flush valve with dual flush device
This Standard covers physical requirements and test methods pertaining to flush valves with dual flush device for OEM use in water closets. Device shall be permitted to be used as a retrofit component when device complies with Table 1. Performance may vary since product was not tested on all models of water closets. Water closet tank with integral flush valve shall be permitted to be used as a retrofit component with other manufacture's water closet bowls. Manufacturer of tank shall provide list of approved water closet bowls.
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International Association of Plumbing and Mechanical Officials [iapmo]
International Association of Plumbing and Mechanical Officials [iapmo]