Patent ID: 7621983

Claim:
A transduction-protection device, comprising: a hollow body defining an internal cavity, said hollow body having: a first end portion having a first tubular connector; a second end portion, opposite said first end portion, said second end portion having a second tubular connector being in fluid communication with said first tubular connector through said internal cavity; said first and second end portions being connected to each other via a third intermediate portion; said third intermediate portion being connected between said first end portion and said second end portion, a first side of said third intermediate portion being coupled to said first end portion along at least a first union zone, a second side of said third intermediate portion configured opposite to said first side, said second side being coupled to said second end portion along at least a second union zone, said third intermediate portion having an empty central opening for transferring a pressure from the first end portion to the second end portion without significant losses of head; a first filter membrane configured in said internal cavity of said hollow body, said first filter membrane defining a first gas-permeable anti-contamination barrier arranged transversally between said first end portion and said third intermediate portion; and a second filter membrane configured in said internal cavity of said hollow body, said second filter membrane defining a second gas-permeable anti-contamination barrier arranged transversally between said second end portion and said third intermediate portion.