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.

Snappy Joe Emergency Shutoff Valves (ESVs) are designed for railcar protection and attach to the shutoff valves on railroad tank cars. Typically three ESVs are used – two on the liquid lines and one on the vapor line. NFPA 58 regulations call for ESV protection on both sides of the transfer hose or piping. Types N563 and N564 are UL® listed for service in Propane and Anhydrous Ammonia. Its Nitrile (NBR) elastomer is UL approved to -40°F / -40°C.