Compact/self-closing valves are spring-loaded valves that provide a self-closing function. All our rubber parts are imported from Europe, which allows us to offer a long-term warranty on our valves. Quick coupling valve with high flow pressure relief device for lpg cylinder quick coupling features: The quick coupling feature allows quick and efficient connection and disconnection o... https://www.svarrnimforgings.com/compact-self-close-valves.html