Pneuline Supply, Inc. manufactures these low-pressure lab disconnects made from either polyethylene or polypropylene which are used in laboratories for vacuum applications, low-pressure lines, water lines, and inert gases. They can be purchased with a Fluorocarbon (FKM) or EPDM disc check valve, or with a porous polyethylene filter. A unique pick-up tube line assembly for use in drawing air or water from containers is also available.