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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Main Author | |
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Format | Patent |
Language | English |
Published |
03.02.1999
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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