About: duckbill valve

Premodifier: duckbill
Head noun: valve

Same concepts
http://dbpedia.org/resource/Duckbill_valve

Broader concepts

label	provenance	confidence
one-way valve	isap:372353590	0.666571
type of check valve	isap:203898082	0.604157
valve type	isap:203898088	0.478527
valve	isap:372353532	0.427062
seal	isap:203527266	0.184924

Narrower concepts

label	provenance	confidence
one-way valve	isap:372353619	0.450699
check valve	isap:372353622	0.441983
valve	isap:372353627	0.210067