Designed for regulating storage pressure to fill panels. Inlet pressure of 6000 psi. Outlet pressure 0-5000 psi. Equipped with wrench-tight CGA 677 nut and nipple. Equipped with two 2.5 in 10,000 psi pressure gauges; one reads storage pressure and one reads regulated pressure. The model 415 is a piston type, hand load regulator that uses an unbalanced poppet design for ruggedness and simplicity. There is a small variation of control pressure with changing inlet pressure as noted in the specifications. A 30 micron filter in the poppet cartridge helps prevent damage by contaminants.