– Triple Sealing Stem with 2 FKM O-Rings and Second Generation PTFE Seats – Blow-Out Proof Stem – 100% Leak Tested – 100% Made in Italy – Leakproof Stem – Lifetime Warranty – 29 in-HG Vacuum Rating
– Gland Follower and Single O-Ring Stem Design – Blow-Out Proof Stem - Latch Lock Handle – 100% Leak Tested
– Gland Follower and Single O-Ring Stem Design – Blow-Out Proof Stem – 100% Leak Tested