As bombas KNF são extremamente silenciosas, construídas com os materiais da mais alta qualidade, são livres de óleo e não precisam de manutenção. Sua fabrica fica situada na Alemanha onde a mesma mantêm um centro de pesquisa e desenvolvimento fabricando bombas de vácuo desde 1946 sempre incorporando as mais recentes tecnologias.

O modelo N838.3 possui diafragma e cabeçote duplos proporcionando um vácuo muito forte, contando com tecnologia patenteada que impede a entrada de gases no motor da bomba. O diafragma do modelo N838.3 é recoberto em Teflon® suportando o trabalho com produtos químicos corrosivos, sejam eles ácidos, alcalinos e solventes.   Seu motor é muito compacto resultando, em bombas de tamanho e peso reduzido, extremamente silencioso e sem vibrações.

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