– Triple Sealing Stem with 2 FKM O-Rings and Second Generation PTFE Seats – Blow-Out Proof Stem – T.E.A. Coated Body to Prevent Dezincification and Galvanic Corrosion – Stainless Steel Ball and Stem – 100% Leak Tested – 100% Made in Italy – Leakproof Stem – Lifetime Warranty – 29 in-HG Vacuum Rating