Snappy Joe Type N551 Emergency Shutoff Valves (ESVs) are designed for in-line installations, usually near a bulkhead. The valves provide a means of shutting off gas in the event of a hose rupture or piping break at the transfer area to avoid a large-scale loss of LPG. The valves can be manually opened and closed at the installed location or closed remotely by either cable or air. A remote operating actuator is also available.