Quick Disconnect Plastic 1/2" Hose Barb x Female with Check (Hi-Temp) - $24.99 - Quirky Homebrew Supply
Quick Disconnect Tube Fitting with Auto Shut-Off - Acetal Plastic - Straight - 1/8" Plug x 1/4" Barbed Hose - Walmart.com
Medical Quick Disconnect Couplings - Medical Component Products
Amazon.com : Plastic Garden Hose Quick Connect with Shutoff Valve Set Male and Female, 3/4” Quick Connectors with Valve for Water Hose Coupling, Quick Release Kit Hose Fittings and Adapters (5 Sets/