Pneuline Supply manufactures Plastic Check Valves that are ideal for Automotive applications. Inlets are made of either Natural Nylon or Glass-Filled Natural Nylon. Outlets are made of either Black Nylon or Glass-Filled Black Nylon. The Barbed connectors are available in 1/8-inch, 3/16 inch, and 1/4-inch Standard Flow or 1/4-inch, 5/16 inch, and 3/8 inch High Flow. Diaphragms are made of either Fluorosilicone or EPDM. Customer-specific unique laser part marking is available for identifiers such as Part number sequencing, Lot number, or Company name.