Sherwood Post Medical Valve With 3360 PSI Pressure Relief Device CGA 870 Toggle KVAB87054-32RTG Straight Thread with 3360 PSI Pressire Relief Device; Material: Brass-Plated CGA 870; 3/4 UNF; CG4 PRD; Toggle; O-ring Nominal stroke is 1.5 turns, full flow at 'A turn (We also carry all Sherwood valves and cylinder accessories) Cleaned for oxygen service and oil free per CGA 0-4.1