LPG Safety Relief Valves are supplied by us for use in the various commercial places. The safety relief valve is one of the most important and vital valves on any LP Gas container. All propane tanks and cylinders are required by law to be fitted with pressure relief devices designed to relieve excess pressure. They are very easy to install in the needed places. The LPG Safety Relief Valves are very strong and durable. They are made for efficient use.