a valve which can be opened to allow water to escape from a part of a pipe, pump, etc., where it is liable to freeze.
| 单词 | θ212681 |
| 释义 | society > occupation and work > equipment > conveyor > [noun] > conduit, channel, or tube > pipe > for water > valve of (2) frost valve1865 a valve which can be opened to allow water to escape from a part of a pipe, pump, etc., where it is liable to freeze. check-valvea1877 |
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