Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Rückschlagklappe-de#Sense
Clapet de non-retour-fr#Sense
Clapet de retenue-fr#Sense
Soupape de retenue-fr#Sense
Check valve-en#Sense
Back-pressure valve-en#Sense