Quick Filling/Venting Closure-NALGE 2158-0031

Ported 83B closure features quick disconnect fittings and inside/outside barbed tubulations. Forms a convenient fluid transfer system with the tubing of your choice. Available in 2 inch or 3 inch port styles for 1/4 inch or 3/8 inch tubing. Socket fittings in cap have internal valves that seal when a tubulation fitting is removed so container seal integrity is maintained. Excellent for use in vacuum systems with NALGENE Heavy Duty Carboys and Bottles. Use with NALGENE 180 heavy-wall tubing. Polypropylene closure and fittings, TPE gasket. NOTE: Not recommended for vacuum use with lighter weight containers. Fitting-to-socket seals will not hold vacuum after multiple autoclavings.