Controller for filling and draining water

The utility model relates to a controller for filling and draining water, which is used for a solar energy water-heating system and mainly composed of a controller casing, a valve core, a one-way valve, a transposition ring, etc. The valve core reaches different service positions according to requir...

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Bibliographic Details
Main Author DEJU LI
Format Patent
LanguageEnglish
Published 03.02.1999
Edition6
Subjects
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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