The Smart-Hose Technologies system represents an engineered and patented safety anhydrous ammonia hose assembly. Valves are integrated into each end fitting, a coated cable is inserted into the hose bore and is attached to each valve. The cable applies pressure against each valve in order to maintain an open position during normal operating conditions. However if the pressure is eliminated due to coupling ejection, hose separation or a catastrophic hose rupture , the valves are instantly released immediately stopping the flow in both directions. The Smart-Hose system is a passive device and therefore needs no human intervention to engage. The Smart-Hose Safety System is combined with a heavy duty NH3 textile reinforced transfer hose designed to meet the most rugged applications found in the fertilizer industry. The hose assembly meets the requirements of DOT HM 225. The Smart-Hose end connections provide excellent performance with the added safety your employees and customers deserve. ..