Power-Loc - 1/2" End with Flush Valve - Grow Organic
Graco ProX21 or Pro210ES Paint Sprayer Power Flush Adapter 288686 - The Home Depot
Amazon.com: Morvat New & Improved Heavy Duty Brass 4 Way Splitter, Garden Hose Manifold Connector with Comfort Grip ON/OFF Valves, Adapter for Water Faucet & Spigot, Includes Washers, Teflon Tape & Mounting
Hose Connectors l Aquor Water Systems
Proline Series 3/4-in x 3/4-in Threaded Female Adapter Fitting in the Brass Fittings department at Lowes.com
Power Flushing Accessories – Proflush
Graco ProX21 or Pro210ES Paint Sprayer Power Flush Adapter 288686 - The Home Depot