Vacuum/gas manifold with a Firestone Rapid Purge Valve at one end and 0-5mm High Vacuum, Easy Action PTFE Stopcock ports with 3/8" 0.D. Swagelok tubing connections. Each connection has an O-Ring groove (O-Rings supplied) for use with #11 Ace-Thred. Valve eliminates the need for a second tube. Shut-off float on gas side of valve prevents pressure buildup when system is purged. Plugs are PTFE with UHDPE* or PTFE handles with FETFE O-Rings. For replacement plugs, see 8194-268 (UHDPE) or 8194-96 (PTFE).