The Nitrous Express DF5 system for a 15 lb bottle is a complete bottle valve kit that includes the Direct Flow 500 DF5 valve with a .500 orifice, a .625 stainless siphon tube, 14 ft of 8AN line, solenoid, 4AN refill fittings, an N2O pressure gauge and an NHRA safety valve. The straight-through DF5 design is rated to flow over 2,000 nitrous horsepower for high-flow applications.
Nitrous Express DF5 System for 15lb Bottle 14 ft 8AN Line Fittings N2O Gauge NHRA Fitting