| 单词 | frost valve | 
| 释义 | > as lemmasfrost valve   frost valve  n. 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. ΘΚΠ society > occupation and work > equipment > conveyor > 			[noun]		 > conduit, channel, or tube > pipe > for water > valve of frost valve1865 check-valvea1877 1865    Mechanics' Mag. 4 Aug. 68/3  				A pipe may be fitted for carrying off the waste water from the frost valve into a drain. 2010    U.S. Patent 224,182 7/2  				This arrangement can also utilise a temperature sensitive frost valve. < as lemmas  | 
	
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