UL Fuel Master Diesel Nozzle with Safety Valve. High flow capacity. Micro-touch valve provides smooth operation and exceptional flow control. Roto-matic latch pin provides positive auto shut-off. Pure PTFE packing eliminates stem leaks. Super tough nylon hand guard. Easy to change locknut style spout assembly. Green scruff guard. Trigger hold-open clip. No pressure, no flow (NPNF) safety valve prevents the trigger from being held open in pressure is not present.