www.safetyandhealthmagazine.com/articles/propane-safety-valve-2
Propane safety valve
January 1, 2013
Standard liquid propane gas cylinder hoses have approximately 20 to 28 inches of potential stored energy (gas) that can leak and spray outward as the coupler is disconnected. Placing the Cormack Propane Safety Valve on the hose prevents the liquid propane gas from spraying onto the operator. Installation takes only a few minutes and will fit all forklift cylinders.