The BP9 Unloader features a brass valve body with a stainless steel ball & seat.  The adjustment know allows for simple adjustment from 100 PSI to Max.  The adjustment knob also has a tamper resistant setting that can be locked.  Rated to 8 GPM & 195° F.

 

Female ports include 2 /8" inlet - 3/8" Outlet - 2 3/8"bypass plus 1/4" Gauge Port.