Check the listing for details. Oxygen Transfill Hose CGA540 CGA870 Aviation Veterinary Medical. Condition: New. Listed at 55.75 USD. High Quality Oxygen Transfill System CGA540 to CGA870•36" 3000PSI Stainless Steel Braided PTFE Core Hose•CGA 540 Brass Oxygen Tank Connections on storage and CGA870 chrome yoke on the small cylinder fill side•0-4000PSI Gauge for Cylinder / Transfill Pressure•Drastically reduce your oxygen cost for small tanks of O2. Buy your oxygen in large H or M tanks and fill your small CGA 870 directly from the large tank. •All parts are brass and cleaned for Oxygen service•One side is a CGA-540 (Large Tank) with a 4000 PSI pressure gauge, and the other side is CGA-540 that screws directly onto your small tank. Check out my other listing for upgraded transfill with bleed assembly: *** Added BLEED VALVE easily purges residual Oxygen from transfill and allows for easy and SAFE disconnection of CGA540 and CGA540 connections.**Check out my other listing for upgraded transfill with O2 transfer valve and bleed assembly: *** Added BLEED VALVE easily purges residual Oxygen from transfill and allows for easy and SAFE disconnection of CGA540 and CGA540 connections.** IMPORTANT ******* CLEANED FOR OXYGEN SERVICE - DETAILED INSTRUCTIONS INCLUDED - BE SURE TO READ AND FOLLOW ALL INSTRUCTIONS TO SAFELY TRANFILL OXYGEN - DO NOT USE OIL OR CONTAMINATE ANY PARTS TO BE USED IN OXYGEN - RISK OF SERIOUS INJURY IF DIRECTIONS NOT FOLLOWED PRECISELY.*****