- Dezincification Resistant Brass Alloy - Triple Sealing Stem with 2 FKM O-Rings and Second Generation PTFE Seats - Blow-Out Proof Stem - FIP x Union FIP - 100% Leak Tested - 100% Made in Italy - Leakproof Stem - Lifetime Warranty - 29 in-HG Vacuum Rating – Wetted Surfaces Contain Less than .25% Lead Content