Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6621
Is Reference of Plug of the channels and the relief valve-en#Sense
Verschluß der Kanäle und Sicherheitsschieber-de#Sense
Tapón de los canales y de la válvula de seguridad-es#Sense
Closure of the channels and the relief valve-en#Sense
Bouchon de canaux et vannes de sécurité-fr#Sense
Closure of the channels and the safety valve-en#Sense