Nuovo Pignone Holding S.p.a.

Maurizio Giacomelli

Emiliano Lazzerini

Stefano Ricci

A rapidly replaceable non-return device () for a petrochemical refinery reactor (), of the type comprising: a support tube (), connected to a portion of the reactor (), this support tube () being provided internally with a cartridge () containing a ball (), the cartridge () having, around an inlet hole () for a processed fluid, a seat () for housing the ball (), and having slots () for the outflow of the said processed fluid; the cartridge () is fitted removably in the support tube ().

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Marina di Carrara, Italy

Maurizio Giacomelli